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You mean 222 Magnum.
Search for 22 terminator Greg goes over this in a few threads.
Yes iv had the 50's doing 3300 in a 223, and no problems, I only mentioned it as the guy with the terminator said...

How big are the squares?
A hornady tech told me 50gr v or z max will self destruct on the way to the target in a 8 twist at 3300.