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Old 10-14-2012, 8:52 PM
curisu curisu is offline
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Found this doing some light bedtime reading on Fr. Frog's "Care and Feeding of the AR15/M16 Rifles" page.

Immediately thought of this thread/sticky and thought it may be useful to anyone still developing a clone:

Quote:
MK262 Mod 0/Mod 1 (These are believed to be the actual specifications)
77 gr Sierra MatchKing (Mod 1 is cannelured lightly); Velocity 2780+/- 40 @15' SD<= 30
Pressure 58.7 Kpsi (piezo), or Avg + 3 SD <=64.7 Kpsi
Port pressure Avg -3 SD >= 15.3 Kpsi
Propellant RL 15 (chrg unk) or non-canister TAC 24 - 25.5 gr (adjusted to give spec performance)

MK362 Mod 0/ Mod 1 (Currently experimental - works in 1:9 twist bbls)
75 gr Hornady BTHP (Mod 1 is cannelured lightly); Velocity 2800+/- 40 @15' SD<= 30
Pressure 58.7 Kpsi (piezo), or Avg + 3 SD <=64.7 Kpsi
Port pressure Avg - 3 SD >= 15.3 Kpsi
Propellant RL 15 (chrg unk) or non-canister TAC 24 - 25.5 gr (adjusted to give spec performance)

For the MK262/362 equivalent handloads TAC, RL15, AA2230, H335, and H4895 appear suitable with TAC looking the best
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