Greetings,
My Speer No 9 manual lists the Ruger 77 .243 twist at 1 in 10" which it may be in a 40 year old rifle. Barrel twists have tightened over the years with some now as fast as 1 in 8" so...
Type: Posts; User: grandpamac
Greetings,
My Speer No 9 manual lists the Ruger 77 .243 twist at 1 in 10" which it may be in a 40 year old rifle. Barrel twists have tightened over the years with some now as fast as 1 in 8" so...
Best check the rifling twist requirements of the projectile and your barrel twist. I suspect they may not be stable.
GPM.