I'm getting really nice accuracy with 85 gr Sierra FBSP. Don't have the load handy, but know I'm using both IMR 8208 and WC844 (H335). I have some 80 gr Win SP's to try, but haven't had time. I too wanted a little heavier bullet. 223 Rem will do everything needed with under 70 gr bullets. 6x45 hits way above it's weight class with 75-85 gr bullets. ; )