Originally Posted by dmax1800
I'm reloading for a Winchester model 70 featherweight in 270 Win with Norma brass and Federal 210 primers. The rifle has had the lugs lapped, the barrel hand lapped and the action trued. The barrel is free floating and I've played with the torque on the receiver screws. I've double checked the scope base screws and the scope ring screws. I've heard a few times that the factory barrel on a featherweight doesn't shoot very well. I've found that the barrel shoots A LOT BETTER warm than cold.
I've tried Barnes 130 grain TTSX, Nosler 130 grain Partitions and Nosler 130 grain Accubonds. I've tried H4831SC, H4350 and IMR 4350 powders. The groups are usually 1" to 1 3/4", sometimes as small as 5/8", but not consistently.
Any suggestions on which bullets to try next??? I want to use the rifle for whitetail hunting, so terminal performance is important along with accuracy. I'd like to find something that would shoot 3/4" or less at 100 yards.
You didn't say your FPS or if you are approaching max book load (which book).
I have an old 270Wby, load for a new 270Wby and recently did some load work. I also have a Winchester M70 Featherweight but in 243.
If you have a new M70 in 270 it should have a 1:10 twist. You 'should' be able to shoot up to 130 TTSX but ...
Combining my work with both and here is what I would suggest:
Try 110TTSX or 95TTSX as fast as you can go, they will probably stabilize better.