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Posted: 6/20/2009 4:09:08 PM EDT
| I am setting up to neck size .223 LC brass for a bolt gun. The brass fired in that rifle is pretty close to passing the case gauge already. My Hornady headspace gauge shows the brass varies plus/minus two thousands. I understand it is best to bump the sholder back .002. I set the die to do that, but It seems to do that no matter what shoulder length is before resizing which is puzzling. All pass the case gauge now. Am I GTG? |
| It's up to you. I think you will have to bump the shoulder after the third firing. If you're fighting to close the bolt you know what needs to be done. Firing the same case through the same rifle makes the fit almost perfect, it's only when you have trouble closing the bolt will you have to do something about it. The first fireing will not require any set back if you don't want the bother, the second will be tighter still. You get the picture. |
| No. You will only need to shoulder bump when it's quite difficult to close the bolt. As was said above, good grease on the back of the lugs. You'll get a few reloads (some only get a couple, some get many) before you bump. It all depends on your preference on how hard you think is too hard for shutting the bolt. Too much work on the brass shortens its life, but if you need to get the rounds cycled thru in an expedient manner, then bumping becomes more frequent (ie - competitions). Most people who require the rifle for a tactical application are shooting factory loads. |
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Quoted:
Sounds like I'm GTG. Should I be setting the neck sizing die to bump the shoulder .002 each time or not? The answer is no. If you are neck sizing, then size the neck, and only the neck. If you are sizing the neck and bumping the shoulder back then you are not neck sizing. Depending upon the die, you are probably doing the equivalent of a full-length sizing. |
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Quoted:
Quoted:
Sounds like I'm GTG. Should I be setting the neck sizing die to bump the shoulder .002 each time or not? The answer is no. If you are neck sizing, then size the neck, and only the neck. If you are sizing the neck and bumping the shoulder back then you are not neck sizing. Depending upon the die, you are probably doing the equivalent of a full-length sizing. My neck only size dies will not bump my shoulder back... Am I missing something? |
| Are you missing something? No, but I'm missing a screw or two apparently. I was trying to both neck size and bump the should back using the Hornady neck sizing die. Seemed like a logical way to design the neck sizing die, but I think I have learned it isn't designed that way. |
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