;--

I?:<::? J A N U A R Y 1 9 4 5

Various models of the latest enemy Armored Force Vehicles encountered

and captured on the battlefield were shipped to the Ordnance Research

and Development Center, Aberdeen, Maryland, for tests and examination.

Ballistic tests revealed the need for armor piercing ammunition with

greater penetrative power to defeat the thick oblique armor plate being

used. Immediate steps were taken to provide our troops with ammunition

for the 90mm guns which possess the required penetrative ability. Three

armor piercing rounds for the Gun, 9Omm, M3 have been developed a1

detailed description of each and comparative penetration performarrws, Y

are presented in this brochure. , .

T A B L E OF

Page Shot, Fired, H . V . , , a . , DOmm, T10El.6

Text . . . . . . . ; u+. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Text. . . . . . : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Illustration oiA?olete round. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Illustration oPAo t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Firing T a b l e - ~ z ~ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1llustration.anetration of gun mantlet of "Panther" Tank . . . . . . . . . . . . 4 Illustration : E~net ra t ion of glacis plate of "Panther" Tank. . . . . . . . . . . . . 4 I l l u s t r a t i o ~ n e t r a t i o n of lower nose plate of "Panther" Tank . . . . . . . . . 5 Armor ~'eneT~ation Curve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5;zs . , - 4%

Shot, ~ i x e d ~ ~ i ' . , 90mrn, T33 Text.? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1 l l u s f i a ~ i a of complete round. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 I l lus t rd!$~ of shot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Firin%'"P.&le. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 8 Firi~~g+:%ble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Illusth@on: Penetration of glacis plate of "Panther" Tank. . . . . . . . . . . .

C O N T E N T S *-t3

I . _ '_

Page

Illustration: Penetration of glacis plate of "Panther" Tank. . . . . . . . . . . . . 11 Armor Penetration Curve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ll

Projectile, Fixed, A.P.C.-T., 90mm, M82 Text. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Illustration of complete round. . . . . . . . . . . . . . . . . . . . . . . . . . . Illustration of projectile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Firing Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Firing Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Illustration: Penetration 254 in. armor plate (55" obliq.) . . Illustration: Penetration 254 in. armor plate (55" obliq.) . . Illustration: Penetration 1% in. armor plate (55" obliq.) . . Armor Penetration Curve. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Illustration: Comparison of complete rounds. . . . . . . . . . . . . . . . . . . . . . . . . .17 Aiming Data Chart 90-B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Aiming Data Chart 90-C-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

SHOT, FIXED, H.V., A.P.-T., 90mm, T30E16. DESCRIPTION. The Shot, N.V., A.P.-T., 90mm, T30ElG

is issued as a fised complete round for the Gun, 90mm, R43 mounted in Gun Jlotor Carriage, At36 or 313631 and Heavy Tank, T26E3. The shot is a light weight projectile, consisting of a tungsten carbide core, aluminum body with nose plug and windshield and steel base tracer loaded.

Length : Shot. . . . . . . . . . . . . . . . . .13.20 in.

. . . . . . Complete Round .35.90 in. Weight :

Shot. . . . . . . . . . . . . . . . . .16.70 lb. . . . . . . Complete Round .3G.00 I b. (Approx.)

h1uzzle Velocity. . . . . . . . . . . . . . . .3,350 f/s PURPOSE. T h i s i s a special hyper-velocit?y, armor piercing

round for attack of heatlily armored vehicles. I t gives greatly increased penetratire pe~formance 11p to 2,000 yards range over the standard i1.P.P.-T., Projectile, 90mn2, 3182. I t i s especially qfectire at shorter ranges. Since tztngsten carbide i s a critical material these projectiles shoztld be nsed sparingl?~ and only when the sitzration requires increased armor pene- tration. This shot will penetrate all plates of the German

Pz Kpfw V "Panther" and "King Tiger" Tanks. IT WILL DEFEAT THE GLACIS PLATE OF TIIE "PANTHER" AT RANGES UP TO 450 YARDS AND OF THE "KING TIGER" AT 100 YARDS

RANGE. UP TO RANGES OF 800 YARDS TIIE SHOT WILL PENETRATE THE GUN MANTLET AND TURRET FRONT OF

BOTH THE "PANTIIER" AND "KING TIGER'' TANKS.

FIRING DATA. a. Aiming data charts are provided for use with the fire control instruments on the Gun niotor Carriages, LM3G and JI3GBl and, m a v y Tank, T2GE3. The use of these charts provides direct-fire with the follow- ing rounds: Shot, AT.-T., T33 Projectile, .A.P.C.-T., 3182 Shot, H.V., A.P.-T., T30E16 Sll~ll, I-I.E., AX71

b. The following aiming data chilrts arc contained in this brochure :

A.D.C. 90-B-1, 90mm Gun, (with mi on Heavy Tank, T26E3 with Coaxial 'I' and Periscope Telescopes, 3IIT7F and 318

A.D.C. 90-C-3, 90mm Gun, (without muzzle biake) 1113 on Gun JIotor Carriage, I f36 or RX36Bl with Coaxial Telescope, M76F.

'%

c. Firing Tables are included in this booklet. - $FZ,F: ACCURACY. AZccuracy firings from the 313 Gun with the :",.~-gi.ountls loaclecl for a JZV of 3,400 f/s have been conducted - - - -

-.--.-- with the T30 type shot a t a vertical target over a range of 2,100 yards. The extreme horizontal dispersion was 17

7nches and the extreme vertical dispersion 30 inches. +-" , ,+ -c.

- I - - - PENETRATION. A curve showing the comparison of - ' pna penetrationvs. rangeof Projectile, A.P.C.-T., 3482and Shot, 2 '?E'H.v., 1Z.P.-T., T30E16 when fired against homogeneous

e* armor plate a t 20' and 30° obliquity is contained in this "'2 .-

r. report. Illustrations are included indicating results ob- ?wK' tained with this shot against the "Panther" tank.

':?iyT ~ ~ A R K I N G . Special markings appear on each cartridge p4=- -Tmq .4-. . case, container ant1 box in red paint. .- -+: 7 . 3 $,

Shot, fixed, H.V., A.P.-T., T30E16 for Gun, 90mm, M 3 .

GUN, 90MMr M3m SHOT, HIVII AIPlmTl, T30E16. MUZZLE VELOCITY, 3350 F/Sl WEIGHT, 16.7 LBS. C,, 1.109.

Range Elev. Time of Max. Terminal Range Elev. Time of Max . Terminal Flight Ord. Velocity Flight Ord. Velocity

yards mils seconds feet f/s yards mils seconds feet f/s

Shot, H.V., A.P., 90mm, T30E16.

Complete penetration of gun mmtlet and turret front plate has been obtained against the German Pz Kpfw V "Panther" Tank by Shot, H.V., A.P., T30E16 at a range of 800 yards.

! j ; J ; ; % r I . .

1 . % - * A'. , . - 1 ---. Complete penetration at the iuncture of machine gun ball mount with the glacis plate of German Pz Kpfw V "Panther" Tank by Shot, H.V., A.P., T30E16 at a range of 800 yards.

Complete penetration of lower nose plate of German Pz Kpfw V "Panther" Tank. Shot, H.V., A.P., T30E16 fired at a range of 600 yards.

SHOT, FIXED, A.P.-T., 90mm, T33. DESCRIPTION. The SOmm Armor Piercing Shot T33 is issued as a fixed complete round for the Gun, SOmm, M3 mounted in Heavy Tank, T06E3 and Gun Motor Carriages, M36 and M36B1. The shot is a modification of the standard AP, M77 which has been reheat-treated and to which a ballistic windshield has been attached.

Length: Shot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14.78 in. Complete round. . . . . . . . . . . . . . . . . . . . . . . . . . . . .37.53 in.

Weight: Shot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .!24.06 lb. Complete round. . . . . . . . . . . . . . . . . . . . . . . . . . . . .43.82 lb.

Muzzle Velocity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8,800 f /s

PURPOSE. This is the most effective shot for the defeat of high obliquify caliber thickness homogeneous armor plate. The shot will defeat all plates of the German Pz Kpfw V "Panther" Tank except the gun mantlet. IT WILL PENETRATE THE GLACIS PLATE OF THE

"PANTHER" TANK UP TO 1,100 YARDS RANGE.

FIRING DATA. a. Aiming data charts are provided for use with the fire control instru- ments on the Gun Motor Carriages, M36 and M36Bl and Heavy Tank, T26E3. The use of these charts provides direct fire with the following rounds:

Shot, A.P.-T., T33 Shot, H.V., A.P.-T., T30E16 Projectile, A.P.C.-T., M82 Shell, H.E., M71

b. The following aiming data charts are contained in this brochure: A.D.C. 90-13-1, 90mm Gun, (with muzzle brake) M3 on Heavy Tank, T2GE3

with Coaxial Telescope, M71C and Periscope Telescopes, M77F and M80D. A.D.C. 90-C-3, 90mm Gun, (without muzzle brake) M3 on Gun Rlotor Car-

riage, M36 or M36Bl with Coaxial Telescope, M'76F. c. Firing Tables are included in this booklet.

ACCURACY. Accuracy firings have been conducted with the T33 round loaded for a M.V. of 2800 f/s and fired from a standard 90-mm Gun over a range of 700 pards at a vertical target. An extreme horizontal dispersion of 16 inches and an extreme vertical dispersion of 19 inches was obtained. PENETRATION. Armor penetration curves for the shot compared with the standard A.P.C.-T., M82 Projectile when fired against homogeneous armor plate a t 20" obliquity are contained herein. Included are illustrations of results obtained, with this shot, against the German Pz Kpfw V "Panther" Tank. MARKING. A special marking in black appears on each cartridge case, container and box :

MV 2800

( WELDS

Shot, fixed, A.P.-T., T33 for Gun, 90mm, M 3 . Cross Section of Shot, A.P., 90mm, T33.

Range

yards

0

1 00 200 300 400

5 00 600 700 800 900

1 000 1100 1200 1300 1400

1500 1 600 1700

GUN, 9OMM, MIw SHOT, 9OMM, AwP.-Tw, T33w MUZZLE VELOCITY, 2800 F/Sw WEIGHT, 24.06 LBS.

Elevation

mils

0.0

0.6 1.2 1.9 2.5

3.2

3.9 4.6 5.3 6.0

6.7

7.4 8.1 8.9 9.6

10.4

11 .9 19.0

Time of Flight

sec

0.00 0.1 1 0.22 0.33 0.44

0.55

0.66 0.77 0.88 1 .oo 1 .I 9

1.24 1.36 1.48 1.61

1.73

1.85 1.98

Maximum Ordinate

feet

0

0 0 0 0

1

9 2 3 4

5 6 7 9

10

19 14 16

Terminal Velocity

f /S

2800

2774 2747 2720 2694

2668

2642 261 5 2588 2562

2536

251 0 2484 2457 2431

2405

2379 2353

Range

yards

1800 1900

2000

21 00 2200 2300 2400

2500

2600 2700 2800 2900

000

1 00 200 300

3400

3500

Elevation

mils

19.8 13.6

14.4

15.2 16.0 16.9 17.8

18.7

19.6 20.5 21.4 22.3

23.3

24.3 25.3 26.3 27.3

98.3

Time of Flight

sec

2.1 1 2.24 9.37

2.50 2.63 2.77 2.91

3.05

3.1 9 3.33 3.47 3.62

3.77

3.99 4.07 4.22 4.38

4.54

Maximum Ordinate

feet

18 20

23 26 29 32 3 5

38 41 45 49 5 3

58

63 68 7 3 78

84

Terminal Velocity

f/s

2328 2302

2276 9250 2225 2200 21 74

21 49

91 93 2097 2072 2048

2023

1998 1973 1948 1994

1900

GUN, 90MMI M3m SHOT, 90MMI AmPm-Tm, T33m MUZZLE VELOCITY, 2800 F/Sm WEIGHT, 94.06 LBS.

Range Elevation Time of Flight

sec

Maximum Ordinate

feet

90 96

103 110

117

124 132 1 40 149

158

167 177 187 197

208

21 9 231 243 256

Terminal Veloci ty

f 1 s 1876 1852 1828 1804

1781

1758 1734 1711 1688

1666 1644 1622 1600 1578

1556

1535 1514 1493 1472

Range Elevation Time of Flight

Maximum Ordinate

feet

Terminal Velocity

f 1 s 1459 1432 141 2 1392 1373 1354

1335 1316 1298 1280

1269 1244 1227 121 0 1193

11 77

mils

29.4 30.5 31.6 32.7

33.8

35.0 36.2 37.4 38.6

39.8 41.1 42.4 43.7 45.0 46.4

47.8 49.2 50.7 52.2

yards

5 500 yards

3600 3 700 3800 3900

4000

41 00 4200 4300 4400

4500 4600 4700 4800 4900

5000 51 00 5200 5300 5400

mils

53.7 sec

Note: When firing with the 90mm Gun, M3 without muzzle brake mounted in the Gun Motor Carriages, M 3 6 or M36B1 add 0.6 mils to a l l values of elevation.

I

Complete penetration of glacis plate of German PI Kpfw V (Panther) Tank by Shot, A.P., 90mm, T33 at a range of 1000 yards.

Proicetile, Fixed, A.P.C.-T., M82 (2,800 f / r M. V.) DESCRIPTION. The M82 armor piercing projectile is issued as a fixed complete round for the Gun, 90mm, M3 mounted in Heavy Tank, T?6E3 and Gun Motor Carriages, M36 and MSBBI. The projectile has an armor piercing cap, ballistic windshield and an Expl. "D" bursting charge which is functioned by the Fuze, B. D., MB8.

Length: . . . . . . . . . . . . . . . . . . . . . . . . . . . Projectile. .lB.40 in.

. . . . . . . . . . . . . . . . . . . . Complete Round. .38.?4 in. Weight:

. . . . . . . . . . . . . . . . . . . . . . . . . . . Projectile. .24.11 Ib. . . . . . . . . . . . . . . . . . . . . Complete Round. .43.87 Ib.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . Muzzle Velocity. .?,SO0 f 1s.

PURPOSE. The muzzle velocity of this round is 9,800 f/s. The armor piercing cap makes this projectile especially efficient against thick face hardened armor plate. The bursting charge makes it extremely effective when penetrations are obtained. PENETRATIONS CAN BE OBTAINED ON ALL PLATES OF T H E "PANTTIER'* AND ‘‘KING! TIGER" TANKS EXCEPT FOR THE GLACIS PLATE AND THE GUN MANTLET.

FIRING DATA. a. Aiming data charts are provided for use with the fire control instruments on the Gun Motor Carriages, M3(i and M36B1 and Heavy Tank, T26E3. The use of these charts provides direct fire with the following rounds:

Shot, A.P.-T., T33 Shot, H.V., A.P.-T., T30E16 Projectile, A.P.C.-T., M82 Shell, H.E., M71

b. The following aiming data charts are contained in this brochure: A.D.C. 90-B-1, 9Omm Gun, (with muzzle brake) M3 on Heavy Tank, T?GE3

with Coaxial Telescope, M71C and Periscope Telescopes, M77F and M80D.

A.D.C. 90-C-3, 90-mm Gun, (without muzzle brake) M3 on Gun Motor Carriage, R.136 or M3BB1 with Coaxial Telescope, M76F.

c. Firing Tables are included in this booklet. 12

ACCURACY. Firings for accuracy with the round loaded for a M. V. of 2,800 f/s from the M3 Gun over a range of 2,100 yards a t a vertical target gave an extreme horizontal dispersion of 41 inches and 70 inches extreme vertical dispersion.

PENETRATION. Armor penetration vs. range curves for the projectile when fired against 20" and 30" obliquity homogeneous armor plate are included in this booklet. Illustrations showing the results of firings of this round against plates similar to those of the "Panther" tank are presented following this discussion.

MARKING. Special markings are painted in black on each cartridge case, container and box.

MV 2800 FIS

Cross Section of Proiectile, AmP.C.-T., 90mm, M8P. Proiectile, fixed, A.P.C.-T, M 8 P for Gun, 90mm, M 3 .

Range

yards

0 100 900 300 400 500 600 700 800 900 1000 1100 1 900 1300 1400 1 500 1600 1 700 1800

GUN, 90MM, Ma. PROJECTILE, A.P.C.-T., M82. FUZE, B.D., M68. MUZZLE VELOCITY, 2800 F/S. WEIGHT, 24.11 LBS.

Elevation

mils

0.0 0.6 1.3 1.9 9.5 3 .9 3.9 4.5 5.2 5.9 6.6 7.3 8.1 8.8 9.5 10.3

11.1 11.8 19.6

Time of Flight sec

0.00 0.1 1 0.29 0.33 0.44 0.55 0.66 0.77 0.88 1 .oo 1.1 9 1 .94 1.36 1.48 1.60 1.79

1.84 1.96 9.08

Maximum Ordinate

feet

0 0 0 0 1 1 9 2 3 4 5 6 7 8 10

19

14 16 18

Terminal Velocity

f ls

9800 2777 2753 2729 2706 2683 2660 2636 261 2 2589 2566 9543 2520 2496 2473

9450

9497 2403 2380

Range

yards

1900 9000 91 00 2200 2300 2400 9500 9600 2700 2800 2900 3000 31 00 3200 3300 3400 3500 3600 3700

Elevation

mils

13.4 14.9 15.0 15.8 16.6 17.4 18.3 19.9 20.0 20.9 21.8 99.7 93.6 24.5 25.4 26.4 27.4 98.4 29.3

Time of Flight sec

9.91 4.34 9.47 2.60 2.73 2.86 3 .OO 3.1 4 3.28 3.42 3.56 3.70 3.84 3.99 4.1 3 4.28 4.43 4.58 4.73

Maximum Ordinate

feet

PO 9 9 9 4 27 3 0 3 3 36 39 4 3 47 5 1 5 5 59 64 69 7 4 79 84 90

Terminal Velocity

f ls

9357 9334 931 1 2288 2265 2242 2220 14 9198 *

21 76 21 53 21 30 21 08 9086 2063 2041 201 9 1997 1975 1953

9LE 1 EEE 1 6PE 1 99E 1 P8E 1 LOP 1 6LP1 LEV 1 SSP 1 ELPL 16P L 60s 1 8ZS 1 LPS 1

98P 99P LPP 8ZP 0 LP Z6E SLE 6SE EVE 8ZE E CE 666 S8Z ZLZ

96'0 1 6 L'O 1 OS'O 1 86'0 1 90'0 1 P8'6 39'6 LP'6 05'6 66'8 6Lm8 6S.8 6Em8 6 1'8

9'E L 6' LL Z'O L S'89 8'99 Z'S9 9 x 9 0'59 4'09 0'6s S'LS 1-95 9'PS Z.ES

OOOL 0069 0089 OOL9 0099 OOS9 OOP9 00E9 0029 00 19 0009 006s Q08S OOLS

994 1 S8S 1 PO9 1 EZ9 1 ZP9 1 z99 1 189 1 LOL 1 ZZL 1 EPL 1 E9L 1 P8L 1 SO8 1 9Z8 1 LP8 1 898 1 688 1 0161 1E6 1

SIj A+!3ola/\ IDU!wJal

6S6 LPZ SEZ PZZ E LZ zoz 26 1 Z8 1 ZL 1 € 9 1 PS 1 9P 1 8E 1 OE 1 EZ 1 911 60 1 ZO 1 96

00'8 18'L Z9'L PP'L SZ'L LO'L 68'9 1 L'9 E S'9 9E.9 6 1'9 30'9 S8'S 89's ZSWS 9E'S oz-S PO'S 88'P

6' LS S'OS Z'6P 6'LP 9'9P E'SP 0' PP L'6P S' LP E'OP l'6E 6'LE L'9E 9'SE S'PE S'EE P'ZE Ern 1E E'OE

SI!U

009s OOSS OOPS OOE s OOZS 00 1s 000s 006P 008P 00 LP 009P OOSP OOPP OOEP OOZP 00 lP OOOP 006E 008E ~ ~ J D A

Range

yards 3 800 3900 4000 41 0 0 4200 4300 4400 4500 4600 4700 4800 4900 5000 51 00 5200 5 300 5400 5500 5600

GUN, 9OMM, M3. PROJECTILE, A.P8C8-T., M82. FUZE, BmD8, M68. MUZZLE VELOCITY, 2800 F/S. WEIGHT, 24.11 LBS.

Elevation

mils

30.3 31.3 32.4 33.5 34.5 35.6 36.7 37.9 39.1 40.3 41.5 42.7 44.0 45.3 46.6 47.9 49.2 50.5 51.9

Time of Flight

sec

Maximum Ordinate

feet

Terminal Velocity

f 1 s 1931 1910 1889 1868 1847 1826 1805 1784 1763 1743 1722 1701 1681 1662 1642 1623 1604 1585 1 566

Range Elevation Time of Maximum Terminal Flight Ordinate Velocity

yards mils sec feet f 1 s

Note: When firing with the 90mm Gun, M 3 with muzzle brake mounted in the Heavy Tank, T26E3, add 0.4 mil to a l l values of elevation.

When firing with the 90mm Gun, M 3 without muzzle brake mounted in the Gun Motor Carriages, M 3 6 or M36B1, add 0.3 mil to a l l values of elevation.

Complete penetration of Projectile, A.P.C., M 8 2 (9800 f/s Complete penetration of Projectile, A.P.C., M 8 9 (2800 f/s M.V.) fired Proiectile, A.P.C., M 8 2 (9800 f/s M.V.) fired against 1.5 M.V.) fired against 9.5 in. of homogeneous armor at against 2.5 in. of homogeneous armor late at 55" obliquity. (Lower nose in. of homogeneous armor plate at 50'. (Side superstructure 55" obliquity. (Lower nose plate of "Panther" Tank i s 2.4 in. plate of "Panther" Tank i s 2.4 in. at !is0.) Penetration obtained at the plate of "Panther" Tank i s 1.5 in. at 40"). Penetration obtained at 55".) Penetration obtained at the following ranges: Rd. 5, following ranges: Rd. 5, Point Blank; Rd. 6,650 yards; Rd. 8, 950 yards. at the following ranges: Rd. 9,4800 yards; Rd. 10, 5450 yards; Point Blank; Rd. 6,650 yards; Rd. 8,950 yards. Rd. 11, 5850 ~ards.

Complete rounds for 90mm Gun, M 3 . N o . 1 -Proiectile,.A,P.C.-T., 90mm, M8P; N o . P- Shot, A.P.-T., 90mm, T33; N o . 3-Shot, H.V., A-.P.-T., 90mm, T30E16. All rounds assembled with Case, Cartridge, 90mm, MI 9.

90-mm GUN ,( W ~ t h muzzlr k o , T26E3 w / COAXIAL TELESCOPE, M 71 C A DC W- 8-1 ond PERISCOPE TELESCOPES (ADVANCC COCI) mA PT, WO1,nV.A P:T, PROJ,A PC-1. SIGUT DIAGRAM M L L . ) ( L . PROJ.4 PC-1. CLCV

1 3 3 ~ 3 0 ~ 1 5 YO2 ~n Y.L * 2,eoows 3,3x)ils 2~300111 zgwtn 2,670(/.

z88-zI :;; &J; - I - - 4 0 0 ---- 3 0 0 3 1 2 -b05 -4 slGnT-Ltm- - -

9 0 0 --- 1 2 0 0 ---- 9 0 0 --------- 4 -- , - 0 -- - - - - - --- ( - - 100 ---- 6 0

1,300 --- 1,800 ----1,mO ----- .'- 2- - > . .- I - - -------- 1,200 ---- 1,100 ---- 9 L

1,700 --- 2 3 0 0 ---- l,7OQ ---- ----- & ". - I - - *-- - - - - - 1,600 ----I,- - - - 1 2 4 2 2 0 0 --- & n o ---- 2 200 ---- ----- .*C - --- -- -2,100 ----1,soo ---- 15 9 I - - 2,600 --- 3 2 0 0 ----2,600 - --- --------aE 24 , - , - 24 -----.--------- ZXK) as00 19.5

3,000 ---- ----- @+ - - - - - - - - I - - * . 2.m ----m ---- 2 3 4 3,400 ------ .- -. ---- - -------a '* , - u 3300 - - -~PO - - - - 2 7 5

I - - --- - - - - 7 0 0 ----3500 ---- 31 8

TO USE CHART: GET ESTIMATED RANGE AWTC~CIAT; YN COLUMN UNDER AMMUNITION BEIhG FIRED. READ SIGHT SETTING FROL)*SIGHT",~GRAM

NOTE: BORE SIGHT ON THE INTERSECTION O F ~ T R E - ~ LINE, EXTENDED IF NECESSARY, AND THE HORIZONTAL PORTION OF THE BORE S I G H CR&'"

I ...

90-nn, OUN,(rlarr, m z z l r kolu) M 3 an GUN MOTOR CARR. ,M36aM36 BlrlCOAXlAL TELESCOPE M 76F ' -' *.OC w-C-5 ( ~ A N c E COPY)

SlfOl.4 PT, Y(OT,nV,APT. PROJ,APC-T, SIOWI DlAORAY SHE^^, PKUJPC-T, €LEV.

133 T30EIS Y12 Y7I YE2 #

<-.> TO USE CHART: GET ESTIMATED RANGE AND LOCATE IN COLUMN WDER AMMUNITION BEING FIRED.

READ SIGHT SETTING FROM SIGHT DIAGRAM. MOTE: m E S W T ON THE INTERSECTION OF TN CENTER UNE,EXTENDED IF NECES!MRY,ANO THE HORIZONTAL PORTION

OF TME BORE SIGHT CROSS.