Thanks guys

Yeah this rifle stuff is all new to me. Funny thing is my Sport is still in the mail and I have zero rounds of .223. LOL
Yes both of the trimmers I have, the Zip and the one that goes into the drill, both use the bottom inside of the case to measure the case length. Didn't know that could be a problem. Shows how much I know. I was suprised the three jaw chuck on the Zip was so unreliable, for me anyway. The shell holder was much better. When I put the shell holder holder in the drill there was also a bit of wabble but some of that was the drill itself. Your right there is a bit to this stuff. I just don't know how much of a problem it would be. I am guessing this thing should run very true.

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Souderton, Pa.