Other than that,, I have also been to this airgunbbs sight.Got a what turned out to be a awesome load for 75 gn Hornady a-max bullets in a 223.
24.0 gns rl-15
75 Hornady a-max
rem 7 1/2 primer
Shot them on Wednesday,got 1/2 groups at 300 yards and had a speed of 2930fps,which in my book is dang fast for a 75 gn bullet in a 223. 5 shot group at 300 yards. Did same load with CCI 400 primers and was very disapointed.
Loaded 35 more rounds and will see if i can duplicate this on Sat morning. Will post results for all that are intrested.