I have decided against the wildcat 6-06mm as a long range caliber as it involves too much in terms of case preparation and loads based on "other similar" cailbers leaves me to questions my own abilities. So i have decided on a Savage FV in either the 243 or the 308 as a mid range killer for varmint/predators.
My question is the 1-9.25" twist good enough to stabilize the longer bullets used for LR shooting?
The longer bullets require a faster twist rate to shoot really well. These are the 100 grain alloy bullets like the grand slam and the 105 grAmax, 107gr SMK, and 115gr Lapua(?). Hornady recommends a 1:8 twist or faster for the A-max. To get it to shoot out of a 1:9.125 and not precess or tumble you would to to load higher than normal velocities for a .243 or 6mm.
I tried them in my Rem 700 and got 1.5 moa out of them but didn't push velocities past recommended loads. The gun & I can shoot .3 moa with lighter bullets.
FWIW, the 55-70 grain ballistic tips (70 gr my fav), Vmax and Speer TNT work quite well. I use the 70 gr Noslers out at 500 yards. They also have a 80 gr ballistic tip for varmints but I haven't developed a better load than my 70 gr perform so haven't used them except in testing.