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KC135 · March 13, 2006, 05:10 PM

The difference is that the 22 is an outside lubricated bullet, held in the case by the heel, where the 22 mag is a jacketed bullet. Thus the 22 case is .223/224, and the 22 mag case is .239/240.

That is the reason .22s often split in 22mag chambers.

The other posts explain the result.

March 13, 2006, 05:10 PM	#5
KC135 Senior Member Join Date: December 12, 2004 Location: Midwest Posts: 222	The difference is that the 22 is an outside lubricated bullet, held in the case by the heel, where the 22 mag is a jacketed bullet. Thus the 22 case is .223/224, and the 22 mag case is .239/240. That is the reason .22s often split in 22mag chambers. The other posts explain the result.