For those, we suggest an 8-twist barrel (as long as it is a true 1:8″ twist). That will let you shoot the excellent 77gr and 80gr Sierra MatchKings, and 80gr Bergers.
While I haven't played with a 22-250 myself, an excellent source of information for you to look over can be found at AccurateShooter.com. Linked below is their information on the 22-250 where in the 3rd section they discuss rifling twist rates vs bullet weights. For a 1:8 barrel, they say that will let you shoot the excellent 77gr and 80gr Sierra MatchKings, and 80gr Bergers so it looks like you need to go heavy bullet, not light with that twist.Went out to fire form brass today for my 22-250 AI. I couldn’t get it to group even at 50 yards with 45 grain Winchester 22-250 standard. Guy I got it from said it is a 1-8 twist shilen barrel. Too small of bullet weight?
Sure you can. One of the biggest problems with over-spinning bullets is lots of precession or "spin-drift", and they won't "go to sleep".you can't over stabilize a bullet
They formed great.It doesn't matter how they group, how well did they form the brass?
I checked and double checked the twist. 1:8 for sure. It’s a 24 inch barrelWay too fast of twist for such a light bullet. Almost too fast for a 70 grain bullet. In any case use 70 grains and up bullets. I'd also check the twist rate to see if that barrel is actually 1/8 twist. (assuming this is a 24 or 26 in barrel)