I have an A-bolt in 243 WSSM. The first rounds I Loaded for it with 40grains IMR 4350 with 100 grain Sierra game kings caused the bolt to be stiff to open. 40 grains is a starting load. The brass is Winchester loaded once from the factory. I wish I had chronograph, but I don't think they were over pressure. what would cause the bolt to be hard to open? Do you think the brass could be soft?
Forgot to mention I neck sized the brass only. I did not full length resize.
thanks.
Forgot to mention I neck sized the brass only. I did not full length resize.
thanks.
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