Re-chamber H&R model 12?

[JackOfAllTradesMasterAtNone]

I have an H&R M12 that I'll never shoot in competition. I was thinking about rechambering it to 22wmr. Will the bolt/lock handle the added pressure? It looks like there's plenty of throw. Wouldn't this be a sweet little varmint gun?

http://www.chuckhawks.com/compared_17HMR_22WMR.htm

-Steve

 

[NCsmitty]

Usually the bore of a 22LR measures out around .222, and the bore of a 22 WMR measures .224, and you would risk raising pressures by pushing the larger 22 Mag down the 22LR barrel.

I do not have the answer on the H&R action's ability to withstand the increase in pressure, but it's probably not a good idea to convert the rifle to 22 WMR.



NCsmitty

 

[JackOfAllTradesMasterAtNone]

OK... Good next move is to slug the barrel then. Thanks.

-Steve