Opening up Tight neck chamber

Hello Knowledgeable Ones (and others).

I have a 223 target rifle that has a tight neck chamber (so marked at .250 so only "relatively" tight) - it shoots superbly and has gotten me placings in a few FTR matches BUT its a right royal pain to reload for with the brass requiring strict segregation and special prep, and even them I strike the occasional refusal to chamber.

Has anyone had a chamber like this opened up, if so what were the effects on accuracy ??

Its a Kreiger cut rifled barrel with a very low round count so I'm a bit hesitant about an "experiment" !!

What does your case neck wall thickness measure at?

Overall neck dimension of loaded rounds is .248 and some of them still refuse to chamber

Quote:

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Originally Posted by Tentman

Overall neck dimension of loaded rounds is .248 and some of them still refuse to chamber

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Neck turn them to 246-247 overall loaded neck dimension