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Posted: 5/1/2009 3:42:12 PM EDT
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i have lupua and privi brass. I am using tac powder and sierra 77gr hpbt mk's. I am trying to achieve at least 2750fps with a 16 inch barrel. I know this exceeds .223 reloading data however not 5.56 loads. Im up to 24.5 gr of tac in the lupua and 24 gr with the prvi brass with no signs of excessive pressure and .6" 4 shot gr at a 100yrds with an aimpoint sight. Does any one have a caculator that will tell me what my fps will be with 24.5 or 25 gr of tac. (cci br 4 primers).
thks only the rakks live forever |
| I dont have a chrono, thats whats kicking my butt, just wondering what you guys know. so far accuracy has been easy, the hotter load the tighter the group, easily under a moa so far without a magnifying scope. (to a certain extent im sure). but thanks for letting me know you dont have any answers |
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Quoted:
I dont have a chrono, thats whats kicking my butt, just wondering what you guys know. so far accuracy has been easy, the hotter load the tighter the group, easily under a moa so far without a magnifying scope. (to a certain extent im sure). but thanks for letting me know you dont have any answers Reel your attitude in if you want to participate in this forum. Your question was answered. There are any magic loads or universal answers, experimentation is required. |
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Boy, you won't last long like that.
Patience is a virtue. Exercise some. My experience was with gov't issue Mk262 and recommended loads to duplicate same with LC brass and TAC. We were told 23.5gr behind the 77gr SMs was the load. I have heard 23.5 on up to 24.5 in LC cases. Now LC brass is thicker than yours, so you MAY get away with up to a grain higher, but take it easy. |
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