Haystacker40sw
Member
- Joined
- Jul 17, 2013
- Messages
- 3
I have just started reloading pistol rounds for my Sig Sauer SW40. All my reloading to this point has been target rounds for necked rifle cartridges (25-06, 30-06, etc). I am really trying not to over think this. (Weighing/batching bullets, "mic"ing primers, flame annealing necks, etc...) BUT, there is something that keeps gnawing on my brain that I cant seem to get a satisfactory answer for...
Straightwalled cases like the 40SW headspace off the case mouth. Crimping is simply to remove the bell/flare from the expander die, Neck tension does the rest. If I am reloading once fired brass of numerous different headstamps, I have cases that vary in length by .010" or more. Even if i hold my C.O.A.L. to say 1.135", it would seem that depending on the case length, my round could be in the chamber with the neck seating against the chamber register, the headstamp could be 10 thousandths off of the breech face, and my freebore could vary by the difference in the various case lengths. This makes my head hurt. One would think that the problem would be remedied by trimming all the cases to a set length for consistency, but depending on the chamber in your specific pistol all it would mean is that you have a uniform gap between the loaded round and the breech face.
So what am i missing? Does the extractor force the head against the breech via the extractor groove?
I know I said that I was trying not to get over persnickety with the details, but this seems kind of important to understand. Thanks in advance for the input...sorry for the suuuuper long question:banghead:
Straightwalled cases like the 40SW headspace off the case mouth. Crimping is simply to remove the bell/flare from the expander die, Neck tension does the rest. If I am reloading once fired brass of numerous different headstamps, I have cases that vary in length by .010" or more. Even if i hold my C.O.A.L. to say 1.135", it would seem that depending on the case length, my round could be in the chamber with the neck seating against the chamber register, the headstamp could be 10 thousandths off of the breech face, and my freebore could vary by the difference in the various case lengths. This makes my head hurt. One would think that the problem would be remedied by trimming all the cases to a set length for consistency, but depending on the chamber in your specific pistol all it would mean is that you have a uniform gap between the loaded round and the breech face.
So what am i missing? Does the extractor force the head against the breech via the extractor groove?
I know I said that I was trying not to get over persnickety with the details, but this seems kind of important to understand. Thanks in advance for the input...sorry for the suuuuper long question:banghead: