I did some load development today with H4350, 90 gr Sierra Tipped GameKings, and 95 gr SST's for my 243 Winchester. Basically I would load 3, shoot them on my back porch range, and come back inside because it's cold . This rifle just isn't stabilizing the long sleek Sierra Tipped GameKings I don't believe, best I could get with several different recipes was 1.7" at 100 yards. The 95 SST was a different story, 0.46" at 100 I don't think I want to actually hunt that bullet though so I may keep testing. I'm guessing it will not have very good weight retention with a max load and a bullet designed for shock anyway. That's just the two 6mm bullets I had on hand. View attachment 262624
Sst looks grest
The Grand Slam may be worth trying: https://www.midsouthshooterssupply....eter-100-grain-soft-point-grand-slam-50-count
I use the 80 ttsx, 80 gmx, and 95 NBT in my slower twist 243 win. My model 7 won't really stabilize the 105's. They don't key hole but 1.5-2" is all it will do.