Re: Reloading help for .270 Win
I just finished loading my friends Remington 270 Win getting ready for our deer hunt in Neb.. He had been shooting Factory 130 Silver BT and I wanted to load 130 Accubond bullets for him. I started just like you did. I used H4831 since I have had great luck with that powder and 270 Win., I started with 56 grains and worked up to 59.5 grains without succes. I changed powders--H4350 and bingo, 54 grains gave me 3 shots under 1/2 inch. Since my friend said he wanted accuracy over velocity I did not chronograph this load but to say the least he was very happy to get a load that shot under 1/2 inch when his factory loads shot 1 1/2 or more and my first loads with H4831 did not break 1 1/2 inches.
My advise is to either work up your load to 59.5 grains or even 60.0. I know that most manual now show 59.0 as a Max load for 130 grain bullets, or you can switch to another powder and see if it works better. H4350 is good, RL-22 works great in the 270 Win, and I have had great luck with N165 and Hornady SP's in one of my 270 rifles.
By the way this was Remington's cheap 710, (I think is the model number) but I never though that I could get this gun to shoot better than one inch at 100 yards.