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03-07-2020, 05:05 PM
(This post was last modified: 03-23-2020, 04:03 PM by LRRPF52.)
Just installed new upper. Loaded a round into chamber by hand and released bolt letting it slam round into chamber. Had to use a small hammer on charging handle to extract round. Tried numerous rounds same problem. These were all reloads.
Bought some new rounds (Hornady Black and Hornady Match) and tried same loading procedure - NO PROBLEM. Reloads worked ok in old upper. Suggestions??
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My guess is the chamber is tighter on new upper. Your brass from original upper might require less shoulder set back than the new barrel. It could be the bullets are seated to long and are into the rifling on the new barrel. You might color the cartridge with a black marker to see where the cartridge is making contact in the chamber.
You might need to screw your sizing die in a little further to get the cartridges to fit in both barrels. Some people keep their brass separate for each rifle but Im not quite that organized.
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^^^ This.
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+1 on what Vascar said.
Do you know what your shoulder bump. COAL on your reloads?
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That was it. Once I realized that factory loads worked I started the process of breaking my reloads down and resizing the brass for the new chamber. THANKS Vascar2.
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So you were able to fix the problem by sizing your cases down more, correct?
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Had to bump the shoulders on my reloads also , I also use Ogive rather than COAL
