Round | Bullet wt (gr) | V0 (fps) | E0 (ftlb) | Sectional Density | Momentum (ftlb/sec) |
FN P90 5.7 x 28mm | 31 | 2,345 | 378 | 0.08 | 0.32 |
HK MP7 4.6 x 30mm | 24.7 | 2,379 | 312 | 0.11 | 0.26 |
5.56 x 45mm M855 | 62 | 3,100 | 1,323 | 0.177 | 0.85 |
This looks very impressive. The temporary cavity is mainly in the centre of the block and I'd guess this coincides with where the base-heavy round flips over. |
Here we see the impact actually lifts the block up off the surface and rolls it laterally. The temporary cavity radiates from the entire wound track, but is somewhat larger about 20cm into the 35cm long block. |
We see a temporary cavity that radiates from the entire wound track. Fairly even but possibly slightly broader nearer the entry point. |
By the Author of the Scrapboard : | |
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Attack, Avoid, Survive: Essential Principles of Self Defence Available in Handy A5 and US Trade Formats. | |
Crash Combat Fourth Edition Epub edition Fourth Edition. | |