I have a commercial Mauser (Husky) in 270 Winchester that I'd like to have rebarrelled to 22-250 but reliable feeding is my concern and the subject of this inquiry.
To try to get an idea how well this medium action will feed and extract the proposed cartridge, I purchased and fed some 22-250 rounds; they fed just fine, popping out of the magazine and up under the extractor exactly as the 270 cases do. However there is a brief instant as the bolt is then pushed further forward when the bolt loses full control and the case is not solidly under control of the extractor any more, and I can pull the bolt back without it having control over the case. This only happens as you might guess with the cartridges coming from the left side of the box magazine. They still go completely in to the chamber just fine, it just acts like a push feed action from about a point when the bolt face is about a half inch away from disappearing in to the receiver ring.
My question is whether the fact that the chamber, which is of course much longer and of very different taper than it would be if it were the 22-250 chamber, might be partially responsible; will the action truly behave as a controlled round feeding action again when the appropriate 22-250 chambered barrel is installed or do your just live with a push feed action, which is definitely not how the large claw extractor is intended to function. It is clear to me when studying the function closely that the chamber itself does contribute to the degree of control offered the round, not just the style of extractor, feed ramp, etc… The extractor should not snap over the rim and this would be unacceptable to me, even if it is commonly done.
I also do not want any alterations to the metal. If alterations are necessary, the cost would not justify as I would simply go out and buy another gun, so any of the more extensive rail or extractor modifications in an effort to improve this feeding, are unacceptable. So again, how much, if any, improvement in feeding might I get with the properly chambered 22-250 barrel?
As you would expect, when I then tried this with 6mm Rem rounds, things improved a bit as this case is between the 22-250 and the 270 in length. So I may go with this or the 257 Roberts as an alternate idea, to get closer to my goal of a lighter recoiling round intended more for varmints and targets (90%) than deer (10%).
Thanks for your input everyone.