Thank you all for the advice. I see in my post I said an AR style firearm but the gun is actually an H&K 91. I cannot remember at the moment the barrel length or twist rate. I'll post that later tonight. I have the IMR 4895 that I love in my 243, 308, and 30-06 bolt guns so theres plenty of it. I also found I have some IMR 4064. The type of shooting I"ll be doing is mostly target shooting out to 300 (mostly), 400, 500(maximum) yards. I know thats a wide range of distances and was thinking the heavier bullets might work best, 168 or even 180 grain bullets again since I use the 180s in my 06 I have a good number of them. Thanks again.
