Originally Posted by 150pilot
To determine my twist, I put a brush on the end of a cleaning rod and put a tape marker at the 12:00 position. Pushing it slowly and smoothly through from bore to end I got 1.75 turns. This in a 24 inch barrel and I'm figuring the first almost 4 inches have no twist. A 1-10 would have given me 2 full turns right?
I'll see what I can do about the picture.
Do you mean that the chamber has no twist?
Or, do you mean the first 4 inches past the throat have erroded?
If that's the case, it's time to rebarrel.
How does it shoot with factory ammo?
My dad had a 270WBY Mark V many years ago. Still does. But, it's a safe queen because it never shot better than 2 MOA with factory ammo.
Some day I'll get it our and try tuning it up. But, it's a beautiful rifle nonetheless.