US3476049A - Practice ammunition - Google Patents

Practice ammunition Download PDF

Info

Publication number
US3476049A
US3476049A US639089A US3476049DA US3476049A US 3476049 A US3476049 A US 3476049A US 639089 A US639089 A US 639089A US 3476049D A US3476049D A US 3476049DA US 3476049 A US3476049 A US 3476049A
Authority
US
United States
Prior art keywords
projectile
bore
tubular body
tubular
rearward
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US639089A
Inventor
Heinz Gawlick
Rudolf Stahlmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dynamit Nobel AG filed Critical Dynamit Nobel AG
Application granted granted Critical
Publication of US3476049A publication Critical patent/US3476049A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/32—Range-reducing or range-increasing arrangements; Fall-retarding means
    • F42B10/34—Tubular projectiles

Definitions

  • the present disclosure relates to a practice or training projectile that has a reduced cross section so that only a portion of the propellant powder charge energy is utilized as corresponds to the reduced cross section of the projectile and thus a short distance of travel is obtained.
  • the cross section is reduced by providing a tubular projectile body having an axially extending bore throughout its entire length.
  • the opposite ends of the tubular body may be tapered and provided respectively with a front tip insert and a rear plug to more closely simulate a live projectile; the insert and the plug separating from the tubular body during firing.
  • the invention of the present application is an improvement over a training ammunition wherein the projectile, constructed as in the case of corresponding live ammunition, is provided with a central axial bore extending throughout its entire length.
  • the cross section of the projectile is reduced so that only a portion of the propellant powder energy is utilized as corresponds to the reduced cross section of the projectile and thus a short distance of travel is obtained.
  • the flight distance of the projectile may be varied at will within relatively wide limits by correspondingly dimensioning the inside cross section of the bore extending through the projectile.
  • a practice projectile simulating live ammunition having an ogival tip was provided with an axially extending bore throughout its entire length, there would result a sharp edge at the front end.
  • the front end may more or less be blunted by shortening the length of the shell at the front end to a quarter or less extent so that a correspondingly broad, annular front face is formed.
  • the hollow cylindrical tubular body may be provided at its front and/or rear end on the outside with a conical taper, that is to give the projectile body, as the simplest form, the shape of a rotational body.
  • the body may be supplemented by a special insert to regain the full shape of live ammunition.
  • FIGURE 1 is a longitudinal cross sectional view of a training projectile body having conically tapered ends
  • FIGURE 2 shows the projectile body of FIGURE 1, in cross section, supplemented to the full shape of live ammunition by suitable inserts;
  • FIGURE 3 shows a modification of the FIGURE 2 construction.
  • the tubular cylindrical projectile body 1 is provided with a central axially extending bore 2 that extends throughout the longitudinal length of the tubular body 1.
  • the outer surface of the front end 3 of the projectile is conically tapered forwardly toward the projectile axis and the outer surface of the rear end is conically tapered rearwardly toward the projectile axis.
  • the rear tapering may be steeper than the front tapering, as shown, or the two tapers may have identical angles with respect to the axis; also, it is contemplated that the front taper may be the steepest.
  • the projectile of FIGURE 1 may be used alone or in combination with the features of FIGURE 2.
  • the front end of the tubular body 1 is provided with a solid tip insert 5 that has a rearwardly extending projection 6 frictionally and telescopically engaging in the bore 2; this insert supplements the tubular body 1 with respect to its external configuration so that it conforms to the complete external shape of a conventional projectile.
  • the rearward end of the bore 2 may frictionally and telescopically contain the rearwardly extending projection or lug 7 of a rear plug having a rearward flange 8 radially overlapping the rear end of the tubular body 1.
  • the flange 8 Upon firing, the flange 8 is easily sheared off by the pressure of the propellant gases and the lug 7 then constitutes a piston having a maximum external diameter equal to the internal diameter of the tubular body bore 2 so that it will travel forwardly through the bore 2 to strike the rearward end of the tip insert 5 for driving the tip insert and piston completely out of engagement with the tubular body, which travels by itself to the target.
  • the projectile is constructed substatnially identical to the embodiment of FIG- URE 2, except that the rear plug 9 is provided with a forwardly extending projection 10 inserted into the rear end of the bore 2, instead of the lug 7 of FIGURE 2.
  • the rear plug 9 is provided with a forwardly extending projection 10 inserted into the rear end of the bore 2, instead of the lug 7 of FIGURE 2.
  • the external diameter of the rearward cylindrical tubular extension is substantially the same as the rearmost outer diameter of the tubular body rear end and the internal diameter of the cylindrical rear plug extension is substantially equal to the internal diameter of the bore 2.
  • the projection 10 is sheared from the other parts of the rear plug 9 to constitute a piston for traveling forwardly through the bore 2, striking the rearward projection 6 and pushing the tip insert 5 by means of the projection 6 out of the front of the bore 2, so that again the tubular body 1 will travel by itself to the target as in the manner discussed in regard to FIGURE 2. Because of the relatively large radially extending front surface 11 of the tubular body 1 and the bore 2, the tubular body is braked and accordingly flies only a very short distance.
  • a practice projectile comprising: a substantially tubular projectile body having an axially extending bore throughout its entire axial extent; said tubular body having a front end and a rear end; said front end having a front end face extending at substantially right angles to the projectile axis to constitute means providing air resistance by direct air contact over the entire end face during free flight after firing to reduce the velocity and range of the practice projectile; at least one of said ends having an outer surface conically tapering towards said axis and away from the geometric center of the projectile; a solid tip insert having an outer surface configuration forwardly tapered toward said axis and substantially flush with said front end outer surface; said insert having a rearwardly extending projection frictionally and telescopically engaged in the bore of said tubular body to form connection means readily releasable during firing to separate said tip and said tubular body; including a rear plug having a forwardly extending projection frictionally and telescopically engaged in the rear end of the bore of said tubular body and having a rearward flange
  • said rear plug includes :a substantially cylindrical tubular por tion having an internal diameter substantially equal to the internal diameter of said tubular body bore, being integrally connected at its forward end to said rearward flange and extending rearwardly therefrom an axial distance at least equal to its diameter; the other diameter of said cylindrical tubular portion being substantially equal to the rear most outer diameter of said tubular body rear end.
  • said rear plug includes a substantially cylindrical tubular portion having an internal diameter substantially equal to the internal diameter of said tubular body bore, being integrally connected at its forward end to said rearward flange and extending rearwardly therefrom an axial distance at least equal to its diameter; the other diameter of said cylindrical tubular portion being substantially equal to the rear most outer diameter of said tubular body rear end.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Powder Metallurgy (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Description

NOV. 4, 1969 GAWUQK ET AL 3,476,049
PRACTICE AMMUNITION Filed May 17, 1967 INVENTORS H EINZ GAWLICK RUDOLF STAHLMANN BY w ATTORNEYS United States Patent Ufifice 3,476,949 Patented Nov. 4, 1969 0, 24 Int. Cl. F42b 11/18, 13/20 US. Cl. 10292.7 Claims ABSTRACT OF THE DISCLOSURE The present disclosure relates to a practice or training projectile that has a reduced cross section so that only a portion of the propellant powder charge energy is utilized as corresponds to the reduced cross section of the projectile and thus a short distance of travel is obtained. The cross section is reduced by providing a tubular projectile body having an axially extending bore throughout its entire length. The opposite ends of the tubular body may be tapered and provided respectively with a front tip insert and a rear plug to more closely simulate a live projectile; the insert and the plug separating from the tubular body during firing.
The invention of the present application is an improvement over a training ammunition wherein the projectile, constructed as in the case of corresponding live ammunition, is provided with a central axial bore extending throughout its entire length. By this measure, the cross section of the projectile is reduced so that only a portion of the propellant powder energy is utilized as corresponds to the reduced cross section of the projectile and thus a short distance of travel is obtained. The flight distance of the projectile may be varied at will within relatively wide limits by correspondingly dimensioning the inside cross section of the bore extending through the projectile. It is possible to exceed the ratio of the inside cross section of the projectile bore to the caliber of the projectile of about 1:3 disclosed in the above mentioned application; this ratio may in fact extend up to about 1:2, whereby the flight distance of the shell is even further decreased. The flight range may be decreased further by roughening the inside surface of the bore, instead of making it smooth.
It is a feature of the present invention to further reduce the flight distance of the projectile by constructing it as a hollow cylindrical body having an outer end surface, which is at right angles to the axis of the shell, at least at the front end.
If a practice projectile simulating live ammunition having an ogival tip was provided with an axially extending bore throughout its entire length, there would result a sharp edge at the front end. According to the present invention, if such a shell is desired the front end may more or less be blunted by shortening the length of the shell at the front end to a quarter or less extent so that a correspondingly broad, annular front face is formed. When an insert is provided in the front end of such a projectile, it must be made correspondingly longer to the extent that the main body portion was shortened as above mentioned to regain the original simulated shape, according to the present invention.
Instead of exactly simulating live ammunition, it is contemplated that the hollow cylindrical tubular body may be provided at its front and/or rear end on the outside with a conical taper, that is to give the projectile body, as the simplest form, the shape of a rotational body. Here again, the body may be supplemented by a special insert to regain the full shape of live ammunition.
Further features, variations, embodiments and advantages of the present invention will become more clear in connection with the following detailed description of the drawings, wherein:
FIGURE 1 is a longitudinal cross sectional view of a training projectile body having conically tapered ends;
FIGURE 2 shows the projectile body of FIGURE 1, in cross section, supplemented to the full shape of live ammunition by suitable inserts; and
FIGURE 3 shows a modification of the FIGURE 2 construction.
As shown in FIGURE 1, the tubular cylindrical projectile body 1 is provided with a central axially extending bore 2 that extends throughout the longitudinal length of the tubular body 1. The outer surface of the front end 3 of the projectile is conically tapered forwardly toward the projectile axis and the outer surface of the rear end is conically tapered rearwardly toward the projectile axis. The rear tapering may be steeper than the front tapering, as shown, or the two tapers may have identical angles with respect to the axis; also, it is contemplated that the front taper may be the steepest. The projectile of FIGURE 1 may be used alone or in combination with the features of FIGURE 2.
As shown in FIGURE 2, the front end of the tubular body 1 is provided with a solid tip insert 5 that has a rearwardly extending projection 6 frictionally and telescopically engaging in the bore 2; this insert supplements the tubular body 1 with respect to its external configuration so that it conforms to the complete external shape of a conventional projectile. The rearward end of the bore 2 may frictionally and telescopically contain the rearwardly extending projection or lug 7 of a rear plug having a rearward flange 8 radially overlapping the rear end of the tubular body 1. Upon firing, the flange 8 is easily sheared off by the pressure of the propellant gases and the lug 7 then constitutes a piston having a maximum external diameter equal to the internal diameter of the tubular body bore 2 so that it will travel forwardly through the bore 2 to strike the rearward end of the tip insert 5 for driving the tip insert and piston completely out of engagement with the tubular body, which travels by itself to the target.
In the embodiment of FIGURE 3, the projectile is constructed substatnially identical to the embodiment of FIG- URE 2, except that the rear plug 9 is provided with a forwardly extending projection 10 inserted into the rear end of the bore 2, instead of the lug 7 of FIGURE 2. At the transition from the hollow cylindrical portion of the rear plug, there is provided a weakened zone that will be sheared under the effect of the propellant powder gases during firing. The external diameter of the rearward cylindrical tubular extension is substantially the same as the rearmost outer diameter of the tubular body rear end and the internal diameter of the cylindrical rear plug extension is substantially equal to the internal diameter of the bore 2. During firing, the projection 10 is sheared from the other parts of the rear plug 9 to constitute a piston for traveling forwardly through the bore 2, striking the rearward projection 6 and pushing the tip insert 5 by means of the projection 6 out of the front of the bore 2, so that again the tubular body 1 will travel by itself to the target as in the manner discussed in regard to FIGURE 2. Because of the relatively large radially extending front surface 11 of the tubular body 1 and the bore 2, the tubular body is braked and accordingly flies only a very short distance.
We claim:
1. A practice projectile, comprising: a substantially tubular projectile body having an axially extending bore throughout its entire axial extent; said tubular body having a front end and a rear end; said front end having a front end face extending at substantially right angles to the projectile axis to constitute means providing air resistance by direct air contact over the entire end face during free flight after firing to reduce the velocity and range of the practice projectile; at least one of said ends having an outer surface conically tapering towards said axis and away from the geometric center of the projectile; a solid tip insert having an outer surface configuration forwardly tapered toward said axis and substantially flush with said front end outer surface; said insert having a rearwardly extending projection frictionally and telescopically engaged in the bore of said tubular body to form connection means readily releasable during firing to separate said tip and said tubular body; including a rear plug having a forwardly extending projection frictionally and telescopically engaged in the rear end of the bore of said tubular body and having a rearward flange radially overlapping the rear end of said tubular body; said rearward flange includ ing means for producing a shear to separate said rearward flange and forward projection upon firing of said projectile to constitute said forward projection, a piston'having a maximum external diameter substantially equal to the internal diameter of said tubular body bore for traveling forwardly in said bore to strike the rearward end of said tip insert rearward projection for driving said tip insert and piston means completely out of engagement with said tubular body so said tubular body will travel alone to the intended target.
2. The projectile according to claim 1, wherein said rear plug includes :a substantially cylindrical tubular por tion having an internal diameter substantially equal to the internal diameter of said tubular body bore, being integrally connected at its forward end to said rearward flange and extending rearwardly therefrom an axial distance at least equal to its diameter; the other diameter of said cylindrical tubular portion being substantially equal to the rear most outer diameter of said tubular body rear end. 1
3. The projectile according to claim 1, wherein said at least one of said ends is the forward end; and said rear end has an outer surface conically tapering rearwardly toward said axis.
4. The projectile according to claim 3 wherein said rear plug includes a substantially cylindrical tubular portion having an internal diameter substantially equal to the internal diameter of said tubular body bore, being integrally connected at its forward end to said rearward flange and extending rearwardly therefrom an axial distance at least equal to its diameter; the other diameter of said cylindrical tubular portion being substantially equal to the rear most outer diameter of said tubular body rear end.
5. The projectile according to claim 4 wherein said tubular body bore has a roughened surface.
References Cited UNITED STATES PATENTS 1927 Great Britain.
ROBERT F. STAHL, Primary Examiner
US639089A 1965-05-29 1967-05-17 Practice ammunition Expired - Lifetime US3476049A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DED0047391 1965-05-29
DED0050224 1966-06-01

Publications (1)

Publication Number Publication Date
US3476049A true US3476049A (en) 1969-11-04

Family

ID=25972144

Family Applications (2)

Application Number Title Priority Date Filing Date
US554853A Expired - Lifetime US3442205A (en) 1965-05-29 1966-06-02 Ammunition
US639089A Expired - Lifetime US3476049A (en) 1965-05-29 1967-05-17 Practice ammunition

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US554853A Expired - Lifetime US3442205A (en) 1965-05-29 1966-06-02 Ammunition

Country Status (13)

Country Link
US (2) US3442205A (en)
AT (1) AT282412B (en)
BE (2) BE681705A (en)
CH (2) CH447885A (en)
DE (1) DE1453827A1 (en)
FI (1) FI44199C (en)
FR (2) FR1470546A (en)
GB (2) GB1143436A (en)
IL (1) IL28076A (en)
LU (2) LU50450A1 (en)
NL (2) NL165287C (en)
NO (2) NO119168B (en)
SE (2) SE322442B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4655140A (en) * 1979-03-10 1987-04-07 Schirnecker Hans Ludwig Projectile, for example for hunting purposes, and process for its manufacture
US20200116463A1 (en) * 2017-05-30 2020-04-16 Techventure Investments Pty Ltd Single seal projectile

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485173A (en) * 1968-02-06 1969-12-23 Us Army Variable centroid projectile
GB1590600A (en) * 1976-10-30 1981-06-03 Dynamit Nobel Ag Bullet
CA1064321A (en) * 1976-12-01 1979-10-16 Maurice A. Laviolette Tubular projectile
DE3243430A1 (en) * 1982-11-24 1984-05-24 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf BULLET WITH A TUBULAR BODY
US4549487A (en) * 1983-09-29 1985-10-29 Pocal Industries, Inc. Practice projectile with variable range
GB2192696B (en) * 1986-07-15 1989-12-13 Royal Ordnance Plc Mortar projectiles
US5501155A (en) * 1994-10-24 1996-03-26 The United States Of America As Represented By The Secretary Of The Army Hollow training round
EP0774105B1 (en) * 1995-06-07 2000-03-08 Raytheon Company Aerodynamically stabilized projectile system for use against underwater objects
DE19917649C2 (en) 1999-04-19 2001-10-31 Nico Pyrotechnik System consisting of a training floor for an automatic rapid-fire weapon and a weapon barrel
DE602004022416D1 (en) * 2003-07-04 2009-09-17 Ind Meccanica Zane S R L METHOD FOR PRODUCING INACTIVE BALLISTIC EXERCISE ELEMENTS AND INACTIVE BALLISTIC ELEMENT PRODUCED BY THE METHOD
ITVI20050010A1 (en) * 2005-01-17 2006-07-18 I M Z Spa METHOD FOR THE MANUFACTURE OF AN INHERENT BALLISTIC ELEMENT FOR EXERCISES AND INHERENT BALLISTIC ELEMENT MANUFACTURED WITH THIS METHOD
USD813974S1 (en) 2015-11-06 2018-03-27 Vista Outdoor Operations Llc Cartridge with an enhanced ball round
US10551154B2 (en) 2017-01-20 2020-02-04 Vista Outdoor Operations Llc Rifle cartridge with improved bullet upset and separation
USD848569S1 (en) 2018-01-20 2019-05-14 Vista Outdoor Operations Llc Rifle cartridge

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1292388A (en) * 1917-04-14 1919-01-21 Bowers Arms And Munitions Company Tubular projectile.
GB276690A (en) * 1926-08-26 1928-11-08 Alti Forni Fonderie Acciaierie Improvements in and relating to dummy shells for gunnery practice
US2324346A (en) * 1941-09-05 1943-07-13 Albree George Norman Projectile for firearms
US2386054A (en) * 1942-04-16 1945-10-02 William N Mcgee Projectile
US3019733A (en) * 1957-05-21 1962-02-06 Harvey Machine Co Inc Projectile construction
US3027840A (en) * 1960-06-09 1962-04-03 Paul V Hannas Dummy ammunition cartridge

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US183009A (en) * 1876-10-10 Improvement in projectiles
GB185301033A (en) *
GB189600989A (en) * 1896-01-14 1896-11-14 Jacques Luciani Improvements in Projectiles.
GB190503921A (en) * 1905-02-24 1905-11-23 William Henry Harvey Improvements in Armour-piercing Projectiles.
GB393891A (en) * 1933-01-14 1933-06-15 Hirtenberger Patronen Target practice projectile
US2433334A (en) * 1944-01-11 1947-12-30 Birkeland Leigh Forstner Ammunition
US2996992A (en) * 1944-09-26 1961-08-22 Charles L Critchfield Projectile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1292388A (en) * 1917-04-14 1919-01-21 Bowers Arms And Munitions Company Tubular projectile.
GB276690A (en) * 1926-08-26 1928-11-08 Alti Forni Fonderie Acciaierie Improvements in and relating to dummy shells for gunnery practice
US2324346A (en) * 1941-09-05 1943-07-13 Albree George Norman Projectile for firearms
US2386054A (en) * 1942-04-16 1945-10-02 William N Mcgee Projectile
US3019733A (en) * 1957-05-21 1962-02-06 Harvey Machine Co Inc Projectile construction
US3027840A (en) * 1960-06-09 1962-04-03 Paul V Hannas Dummy ammunition cartridge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4655140A (en) * 1979-03-10 1987-04-07 Schirnecker Hans Ludwig Projectile, for example for hunting purposes, and process for its manufacture
US20200116463A1 (en) * 2017-05-30 2020-04-16 Techventure Investments Pty Ltd Single seal projectile
US10871359B2 (en) * 2017-05-30 2020-12-22 Techventure Investments Pty Ltd Single seal projectile

Also Published As

Publication number Publication date
NO121319B (en) 1971-02-08
LU50450A1 (en) 1966-04-14
FI44199C (en) 1971-09-10
GB1143436A (en) 1969-02-19
DE1453827A1 (en) 1969-10-23
NL165287C (en) 1981-03-16
CH473375A (en) 1969-05-31
FR1470546A (en) 1967-02-24
NL6707638A (en) 1967-12-04
IL28076A (en) 1971-08-25
NL168936B (en) 1981-12-16
SE324122B (en) 1970-05-19
GB1169079A (en) 1969-10-29
FR92545E (en) 1968-11-22
NL168936C (en) 1982-05-17
US3442205A (en) 1969-05-06
FI44199B (en) 1971-06-01
NL165287B (en) 1980-10-15
BE681705A (en) 1966-10-31
NL6602864A (en) 1966-11-30
AT282412B (en) 1970-06-25
DE1578103B2 (en) 1976-02-26
DE1578103A1 (en) 1971-03-11
NO119168B (en) 1970-03-31
CH447885A (en) 1967-11-30
BE699263A (en) 1967-11-03
SE322442B (en) 1970-04-06
LU53741A1 (en) 1967-07-24

Similar Documents

Publication Publication Date Title
US3476049A (en) Practice ammunition
US3338167A (en) Disintegrating training ammunition for firearms
US5515787A (en) Tubular projectile
US3394905A (en) Shotgun bullet
US3714896A (en) Projectile, cartridge, and method
US1556160A (en) Game bullet
US5012744A (en) Sabot bullet
US4777883A (en) Bullet
US5103736A (en) Sabot bullet
US4508036A (en) Training cartridge with synthetic resin projectile or dummy projectile
US5016538A (en) Sabot bullet
US3613584A (en) Gun cartridge
US2115028A (en) Projectile and gun
US2414863A (en) Projectile
PT86237B (en) PROJECTIL TUBULAR AND ITS MANUFACTURING PROCESS
US2638051A (en) Subcaliber projectile
US3181465A (en) Plastic mortar shell
US2356227A (en) Projectile
US3939773A (en) Spin-stabilized projectiles
US2573362A (en) Shotgun projectile
KR960016217B1 (en) Frontally guided sabot bullet
US4939997A (en) Article of ammunition
US4003313A (en) Projectile
GB2251480A (en) A sub-calibre sabot projectile
NL8103811A (en) MASS PROJECTILE WITH CONTROLLED DEGRADABLE FRONT PENETRATOR.