Quote:
Originally Posted by ispcapt
I loaded 3 of the .38 FMJ rounds and 3 .357 mag rounds. I couldn't tell a difference between them. Same amount of recoil. I pulled the bullets on the remainder of the box and weighed them. They all appeared OK but weights were off by up to 5 grains each. That small difference shouldn't have caused the keyholing tho unless the weight was distributed to one side.
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I guess your meaning .5gr as a 5gr difference could be catastrophic. And when the gun is held on target unless the charge is a full case nearly compressed it will lay on the bottom when fired.