Quote:
Originally Posted by Hondo44
It's not an issue of "should not shoot", it's an issue of accuracy deterioration.
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There is a youtube video where a guy shoots 22LR in a convertible (22LR, 22WMR) revolver that came with two cylinders.
He saw a reduction in velocity of more than 300FPS (if I recall correctly) when he compared shooting LR from the WMR cylinder vs LR from the LR cylinder in the same revolver.
I'm think you are losing a lot of pressure from the undersized cases, at least for a short period until the LR case bulges enough to fill the chamber diameter.
So that's another issue along with accuracy deterioration.