A little more info, I can load the original 300 WM magazine with 30-06, it holds 4 rounds, but the bolt face only catches a small portion of the rim when pushing the round forward. SO, yes, it does work, but I am concerned that it may not properly feed (bolt head may slide over the top of the round and not push feed) 100% of the time. Any suggestions, perhaps alter the feed lips? That seems to be the only noticeable difference between the mags for the 2 rounds.
As an aside, I have an old early-style Detachable Mag that is stamped for 270/7mm rounds. So perhaps there is no difference at all? I would just use this but I want a synth stock, and I am left handed, so there are no real options.
Thanks again, I would appreciate any guidance or input you can provide.
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