MIL-DTL-45225F(MR)
Minimum ballistic limits (protection at 0o obliquity) for
TABLE VIII.
type I, class A material using caliber .50 AP, M2
projectile (cont'd).1/
Thickness,
Required
Thickness,
Required
Thickness,
Required
inches
BL(P)fps
inches
BL(P)fps
inches
BL(P)fps
2.285
2211
2.495
2248
2.705
2363
2.290
2214
2.500
2250
2.710
2366
2.295
2217
2.505
2253
2.715
2369
3/ 2.300
2217
2.510
2256
2.720
2371
2.305
2217
2.515
2259
2.725
2374
2.310
2217
2.520
2261
2.730
2377
2.315
2217
2.525
2264
2.735
2380
2.320
2217
2.530
2267
2.740
2382
2.325
2217
2.535
2270
2.745
2385
2.330
2217
2.540
2272
2.750
2388
2.335
2217
2.545
2275
2.755
2391
2.340
2217
2.550
2278
2.760
2393
2.345
2217
2.555
2281
2.765
2396
2.350
2217
2.560
2283
2.770
2399
2.355
2217
2.565
2286
2.775
2402
2.360
2217
2.570
2289
2.780
2404
2.365
2217
2.575
2292
2.785
2407
2.370
2217
2.580
2294
2.790
2410
2.375
2217
2.585
2297
2.795
2413
2.380
2217
2.590
2300
2.800
2415
2.385
2217
2.595
2303
2.805
2418
2.390
2217
2.600
2305
2.810
2421
2.395
2217
2.605
2308
2.815
2424
2.400
2217
2.610
2311
2.820
2426
2.405
2217
2.615
2314
2,825
2429
2.410
2217
2.620
2316
2.830
2432
2.415
2217
2.625
2319
2.835
2435
2.420
2217
2.630
2322
2.840
2437
2.425
2217
2.635
2325
2.845
2440
2.430
2217
2.640
2327
2.850
2443
2.435
2217
2.645
2330
2.855
2446
2.440
2217
2.650
2333
2.860
2448
2.445
2220
2.655
2336
2.865
2451
2.450
2223
2.660
2338
2.870
2454
2.455
2226
2.665
2341
2.875
2457
2.460
2228
2.670
2344
2.880
2459
2.465
2231
2.675
2347
2.885
2462
2.470
2234
2.680
2349
2.890
2465
2.475
2237
2.685
2352
2.895
2468
2.480
2239
2.690
2355
2.900
2470
2.485
2242
2.695
2358
2.905
2473
2.490
2245
2.700
2360
2.910
2476
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