Bronze Supporter
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Sizer die not screwed in far enough to bring down the case shoulder. Common problem. My .223 rounds from 550B would work great in everything (Colt AR, mini14, Rem 700) except a Rock River AR (which has a match chamber).
with match chamber AR. RCBS Precision Mic can measure this to properly adjust your
sizer die.http://www.midwayusa.com/product/477756/rcbs-precision-mic-223-remington
I love my 550. Have owned it for close to 30 years. Worn out or broke numerous parts.
Several powder measures. Always no hassle free parts. A couple years ago I sent
it back to Dillon and they completely rebuilt it. All new bearings and painted. For
free of course. Now I have a NEW press!
I have used many different types of trimmers. Little Crow is the best 223 trimmer
for the money. Leaves very little burr inside and outside case mouth. Fast and easy to use.
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