Ackman
New member
Bedding won't make that happen. A bad crown makes the gun so it simply won't group at all with anything. With so much freebore you can't even find the lands, bullets are jumping a long ways. Factory chambers can be sloppy , maybe yours has an oversize neck or throat diameter. With shorter bearing surface those light bullets could be getting crooked before the rifling if the neck and throat are overly generous. If it's reloads, maybe those few bad ones have a lot of runout. Maybe it's a combination of those things and seating bullets out to where they have little support from the caseneck. Who knows, I'm just throwing things out.
Years ago I had a keyholing problem and still don't exactly know why. A good shooting custom .221 with smooth 14" twist barrel and no freebore is very accurate with 40's and 50's. I got some bulk surplus 33VMax from Midway and wanted to push them fast. At maybe 3600-3700 the groups weren't even groups, bullets were all over the paper and each went in perfectly sideways. Backed off to about 3,000 or maybe a bit less the groups sucked right down and became small ragged holes.....50yd groups looked like the ones that come with a Cooper (those are 50yd also). I never really figured out what was going on. (Spoke with someone who'd shot them very fast in a .223 with no problems) My suspicion is with the bullet.....maybe that lot of bullets maybe has a little thinner jacket that can't hold the rotational forces of more speed. Or maybe the core and jacket were separating. It's all just speculation, but in my rifle I think the issue is with those particular bullets.
With your gun, I'd let Savage rebarrel it anyway. Since that barrel has so much freebore, a new one with less would be a good thing.
Years ago I had a keyholing problem and still don't exactly know why. A good shooting custom .221 with smooth 14" twist barrel and no freebore is very accurate with 40's and 50's. I got some bulk surplus 33VMax from Midway and wanted to push them fast. At maybe 3600-3700 the groups weren't even groups, bullets were all over the paper and each went in perfectly sideways. Backed off to about 3,000 or maybe a bit less the groups sucked right down and became small ragged holes.....50yd groups looked like the ones that come with a Cooper (those are 50yd also). I never really figured out what was going on. (Spoke with someone who'd shot them very fast in a .223 with no problems) My suspicion is with the bullet.....maybe that lot of bullets maybe has a little thinner jacket that can't hold the rotational forces of more speed. Or maybe the core and jacket were separating. It's all just speculation, but in my rifle I think the issue is with those particular bullets.
With your gun, I'd let Savage rebarrel it anyway. Since that barrel has so much freebore, a new one with less would be a good thing.
