I'm chompin at the bit for almost 8 months.

I'm a little OC with reloading and don't mix brass between rifles. easy enough because my other .303's haven't been shot yet.

a local gunsmith, competent but not well informed about the character "typical" of the LE's explained that the war time chambers and the Mk4's had looser chambers than the peace time ones. I've heard it often enough as a rumor but no confirmation. so I attributed it to facts. Is it a rumor/myth.

Who makes the best barrels in terms of tollerances and tight chambers?
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