Here's the best my latest .223 can do. Multiple loads have been tried and every trick ever suggested for making a Montana shoot has been checked off the list. The two in the black are the first two followed by the three in the orange. Seems to be a barrel heat issue, considering removing the bedding from under the shank, any thoughts?
I just bedded mine on Friday and it does the same thing if I don't hold it just right or if I let it recoil in the bags differently. I re did the tang last night because I noticed it would suck down a tiny bit when I tightened the rear screw. These are what my groups looked like yesterday.
I shot the first 5 in about two minutes.
Decided I had 6 left why not shoot a ten shot group. First shot the rifle twisted in the bags and went high and left. I figured I screwed the pooch and made it an eleven shot group. Last six in about two maybe three minutes. She's talking.
Looks like you have yours sorted out. The top old group is about how my 7-08 shoots with factory ammo. I'm still getting my reloading kit set up though so I have both factory ammo and possible needing a bedding job working against me right now.
My intentions are to start loading for it and make sure it isn't an ammo issue and then bed it.