Thread: Shoulder Bump Advice

Originally Posted by Sonicjoe

Around the third firing, no annealing as of yet.
Interesting to see some suggestion to size to 2.1230" to avoid working the brass, when this is quite a big change compared to post firing at 2.1200".
Cheers for all the suggestions, I am reading them!

It may be worth annealing 2 or 3 cases and fire forming to get a better picture of your chamber dimensions . Unlike rimless cases that stretch from the shoulder backwards to the boltface, rimmed magnums stretch forwards from the rim first .
Not all brass comes from the factory annealed , some are annealed mid' forming .