I watched a guy on Youtube by the name of The Real Gunsmith show how to adjust FL sizing die for minimum shoulder bump. I adjusted my die as per his instruction and bolt seems tight on downstroke. Also, when ejected there is a small ring in center of primer. I am just chambering the sized brass, no powder/bullet. Is this a safe condition? I realize this would be for a specific rifle...30/06. Thanks.
Shoulder bump
- Thread starter rpchevy02
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Not sizing enough.
PWC
Member
Here we go again
Bcwitt
Member
A tightly fitted case is what you are trying to achieve when you shoulder bump. If it's too tight, you simply turn the die in a bit.
jmorris
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Sounds about how I do it for a given bolt action rifle. I wouldn’t say it’s “tight” but the case is compressed as the bolt is fully closed.
If you have a ring on your primer from closing the bolt, you either have a bolt face that’s not flat, dirty or your primers are not seated below flush.
If you have a ring on your primer from closing the bolt, you either have a bolt face that’s not flat, dirty or your primers are not seated below flush.
.308 Norma
Member
I'm not understanding the "small ring in center of primer" thing. Were your cases already primed before you resized them while trying to bump the shoulders back just a little?
Thanks in advance for clarifying.
A definite possibility
gwpercle
Member
I keep screwing the die in until a resized case chambers easily , with very little resistance when the bolt is closed . Stop there for that rifle . I would prefer easy chambering over one extra reload of the brass .
We called it resizing to the rifles chamber . If you have more than one rifle ... you can resize for each or full length resize all cases so the rounds will chamber in both ...or all three rifles .
Gary
We called it resizing to the rifles chamber . If you have more than one rifle ... you can resize for each or full length resize all cases so the rounds will chamber in both ...or all three rifles .
Gary
Cases were primed after resizingI'm not understanding the "small ring in center of primer" thing. Were your cases already primed before you resized them while trying to bump the shoulders back just a little?
Thanks in advance for clarifying.
I think you nailed it. Primers were hard to seat and look flat across the head.
.308 Norma
Member
Oh, okay. I get it now. Thanks!
Anyway, like gwperle said:
All of the rifles I load for are hunting rifles, and when it comes to hunting rifles I'm not nearly as concerned about getting a couple of extra reloads out of a case as I am about easy chambering, and for that matter, easy extraction. I'm not concerned about a few fractions of an inch smaller groups either.
About that "ring in the center of primer" thing though, are you seating your primers clear to the bottoms of their pockets? If you're not, I'd bet good money you're going to be seeing some misfires.
Edited to say you got in before me, rpchevy02. I don't know what to tell you about your primers being so hard to seat that you're flattening them. I ran across that problem once with a box of CCI primers I was trying to use in a 270 Winchester. Yet I've literally used tens of thousands of CCI primers in other rifles and handguns, and never had that problem. So it might have just been that box of primers or that brass I was using for those 270 Winchester loads. I don't remember what brand of brass it was.
Nevertheless, as I said - you have to seat your primers all the way to the bottoms of their pockets or you're probably going to have some misfires - just like I did with that 270 Winchester.
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Yeah, I get ya. I've been loading a long time and never had this primer seating problem before. I'm thinking bad primer pockets. Hornady brass, once fired.Oh, okay. I get it now. Thanks!
Anyway, like gwperle said:
All of the rifles I load for are hunting rifles, and when it comes to hunting rifles I'm not nearly as concerned about getting a couple of extra reloads out of a case as I am about easy chambering, and for that matter, easy extraction. I'm not concerned about a few fractions of an inch smaller groups either.
About that "ring in the center of primer" thing though, are you seating your primers clear to the bottoms of their pockets? If you're not, I'd bet good money you're going to be seeing some misfires.
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