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Page Title:
Table A-X. Minimum required ballistic limits (protection criteria), firing obliquity: 0, projectile: caliber .30 M2 AP. |
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|  MIL-A-12560H (MR)
w/INT. AMENDMENT 4
APPENDIX A
TABLE A-X. Minimum required ballistic limits (protection criteria), firing obliquity: 0,
projectile: caliber .30 M2 AP.
Thickness,
Required
Thickness,
Required
Thickness,
Required
inches
BL(P), ft/sec
inches
BL(P), ft/sec
inches
BL(P), ft/sec
0.230
1509
0.355
1994
0.480
2385
0.235
1532
0.360
2011
0.485
2400
0.240
1554
0.365
2028
0.490
2414
0.245
1575
0.370
2045
0.495
2428
1/ 0.250
1596
0.375
2062
0.500
2442
0.255
1618
0.380
2078
0.505
2456
0.260
1638
0.385
2095
0.510
2470
0.265
1659
0.390
2111
0.515
2484
0.270
1679
0.395
2127
0.520
2498
0.275
1699
0.400
2143
0.525
2512
0.280
1719
0.405
2159
0.530
2525
0.285
1739
0.410
2175
0.535
2539
0.290
1758
0.415
2191
0.540
2552
0.295
1778
0.420
2206
0.545
2566
0.300
1797
0.425
2222
0.550
2579
0.305
1815
0.430
2237
0.555
2593
0.310
1834
0.435
2252
0.560
2606
0.315
1853
0.440
2267
2/ 0.565
2619
0.320
1871
0.445
2282
0.570
2632
0.325
1889
0.450
2297
0.575
2645
0.330
1907
0.455
2312
0.580
2658
0.335
1925
0.460
2327
0.585
2671
0.340
1942
0.465
2342
0.590
2684
0.345
1960
0.470
2356
0.595
2697
0.330
1977
0.475
2371
0.600
2710
1/ Specification requirements begin for this ordered thickness
2/ Specification requirements end for this ordered thickness.
Note 1: Tabulated values on either side of the specification requirements are for interpolation of
BL(P) requirements on undersize or oversize plates.
Note 2: For class 3 armor the upper ballistic limit (maximum) shall not be greater than 141 ft/sec
above the required lower ballistic limit (minimum).
28
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