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Old 04-12-2013, 8:02 PM
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ChrisGarrett ChrisGarrett is offline
Join Date: Sep 2011
Location: Miami, Florida
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My fist guess is that the Dillon sizing die is squeezing your necks in pretty tightly.

Measure the neck diameter of a fired case and then measure after sizing in your Dillon sizing die, which I assume is the die in the RT-1200?

I bet you have a lot of tension there and that seating stem, which can be removed and polished a bit with a Q-tip and metal polish, is having to work hard to seat the bullets and is denting your bullets' noses.

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