Time to pick some brains...
Ok, I've posted this on wssmzone.com as well but figured being as there's plenty of gun savvy folks around here I'd ask here as well. I recently aquired a win mod 70 super shadow in 223 wssm. I got it for a good enough deal that I'm not worried if all I end up with is an action but would like to use it as is for a good coyote gun to keep in the truck. These things come factory with a 1 in 10 twist barrel. The gun wasn't shooting good so I started chasing the usuall suspects. I've don the following:
Bedded recoil lug, wasn't touching at all
Tried a proven scope, changed to better scope mounts
floated the barrel
tried loads in 40, 55, 60, 64, and 68 gr bullets.
bore scoped barrel, looks good enough for factory
cleaned all copper.
This thing still won't shoot. Today was the first I've got to shoot it after bedding. The rifle was still extremely inconsistant. Seems like some of the bullets never reached the target. I got to messing with it and found that some of the bullets were coming apart right out of the barrel. These were 60 gr bergers and 68 gr wildcats. This was occuring at velocities ranging from 3200 to 3500 fps. Anybody have any ideas? Could there be some kind of inconsistancy in the bore diameter causing this? There are too many folks out there that wan't to hate on the wssm's for one reason or another. All prejudice aside, there must be some mechanical reason for this happening. Plenty of folks out there are having luck with this round. Any insight would be appreciated.
Thanks in advance. [img]/ubbthreads/images/graemlins/confused.gif[/img]