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I have never done it, but I dont think a .222 rem will fire form to .223 rem with out case failer. Something is causing your bullets to not stabilize [key holes]. Rifling is probably the problem one way or the other. Have it checked out for wear, damage, and rate of twist. Also you never stated the bullet weight you are shooting? If you have a 14 inch twist [standard], it wont stabilize more than 60gr, and it might not stabilize the 60's. So make sure you have a bullet weight @55gr or less for the 14 inch twist.
blowing a 222rem out to 223 would be the same as taking a standard 06case, and blowing it out to a gibbs case. It will take place under that much pressure. Maybe not a perfect form with positive headspacing,..but it will appear very different when it comes out of the chamber,..at least enough to see with the naked eye.
If this isn't the case,...I would say a damaged crown, gouged rifling, or damaged rifling at the leade/throat area.
I have never done it, but I dont think a .222 rem will fire form to .223 rem with out case failer. Something is causing your bullets to not stabilize [key holes]. Rifling is probably the problem one way or the other. Have it checked out for wear, damage, and rate of twist. Also you never stated the bullet weight you are shooting? If you have a 14 inch twist [standard], it wont stabilize more than 60gr, and it might not stabilize the 60's. So make sure you have a bullet weight @55gr or less for the 14 inch twist.
blowing a 222rem out to 223 would be the same as taking a standard 06case, and blowing it out to a gibbs case. It will take place under that much pressure. Maybe not a perfect form with positive headspacing,..but it will appear very different when it comes out of the chamber,..at least enough to see with the naked eye.
If this isn't the case,...I would say a damaged crown, gouged rifling, or damaged rifling at the leade/throat area.
