
Originally Posted by
TiroFijo
According to what I've read, comparing M855A1 to Mk318:
M855A1:
- Better BC and trajectory (better shape factor and higher MV) than Mk318. This of course means a little different POI compared to M855, specially noticed at longer ranges and with optics.
- Higher retained energy.
- Higher chamber (and gas port) pressure.
- Better steel plate penetration than Mk318. Perceivable difference, since you have the steel penetrator and higher retained energy.
- Little better cinder block penetration than Mk318, not as marked as steel.
Mk318:
- The POI is also a little different from M855.
- Better performance after windshield penetration, due to weight retention and little deflection of the original path.
- Pressure basically the same as M855 green tip.
- Better common intermediate barrier penetration than M855, due to higher weight retention and relatively hard rear all copper shaft.
I have no idea of their comparative gel effects, it would be nice to see them compared at different impact velocities, and after passing some intermediate barries too.
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