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Post by jjsharpshooter on Oct 3, 2017 22:33:53 GMT -5
I'm getting ready to work up loads for my 10 1/2" Ruger 357 Max and have a question on OAL. I'm using a Hornady 180 gr XTP bullet with the 2 crimp grooves, which crimp groove should i use? Holding the case and bullet against the side of the cylinder it looks like the lower crimp groove will work but it puts the bullet right at the edge of the cylinder. I see loads listing 20 gr of IMR 4227 as a max load but with which crimp groove? I was going to seat a bullet in the case and see if it clears the cylinder but thought I would ask here first.
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Post by bradshaw on Oct 3, 2017 23:03:33 GMT -5
I'm getting ready to work up loads for my 10 1/2" Ruger 357 Max and have a question on OAL. I'm using a Hornady 180 gr XTP bullet with the 2 crimp grooves, which crimp groove should i use? Holding the case and bullet against the side of the cylinder it looks like the lower crimp groove will work but it puts the bullet right at the edge of the cylinder. I see loads listing 20 gr of IMR 4227 as a max load but with which crimp groove? I was going to seat a bullet in the case and see if it clears the cylinder but thought I would ask here first. **** Bullet pull is not a problem in the Maximum. I prefer to crimp at the top of the cannelure, leaving just enough cannelure showing to accommodate a slight variation in case length or placement of the cannelure. On this subject, a cannelure may not always be in the same place on different batches of bullets. In general, location repeats, but it is wise to check seating. If the bullet barely clears the cylinder face when crimped in the bottom cannelure, I would opt for the top cannelure. “Max”loads of slow powder in the .357 Maximum are about eliminating air space, not weight. Charge weight may vary as a function of case volume and seating depth. Pressure can be made to climb with slow powder, but it won’t spike the way medium or fast powders do. David Bradshaw |
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Post by jjsharpshooter on Oct 4, 2017 18:25:25 GMT -5
Thank you very much Sir
for your wisdom and knowledge, it's always a pleasure reading your writings.
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Post by bradshaw on Oct 5, 2017 6:50:02 GMT -5
jjsharpshooter.... thank you for the kind words. There is accumulated on Singleactions a fair amount of shooting experience. A tip of the hat to COMPETITIVE DISCIPLINE; were it not for the firing line, I would have missed out on throwing lead with these fine folk.
David Bradshaw
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