Without a doubt, I experienced the highest velocity and BEST ACCURACY with RE22 in my rifle. However, I was shooting a 22-243AI and using 75 A-Max (moly) bullets exclusively. H1000 and 7828 are worth a try too.
Without any data on the 22-243 (plain) and using naked bullets I can't help you out with a starting load but I would be starting with RE22.
Good luck - the 22-243, in any variation, is addictive.
Originally Posted by combatcurt
Hey guys, just started a new build on an old bench gun and I'm looking for any load data for 22-243win using 75gr AMAX. Barrel is a 28" ss fluted made by Benchmark. Twist is 1:9. Any help would be greatly appreciated.