Hugger-4641
Member
Is there any reason, other than error by man or equipment, that a person would trim 30-06 cases to 2.470" instead of the recommended 2.484" ?
Trimming short
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243winxb
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After FL sizing, SAAMI minimum is 2.474" Any shorter would seem to be a mistake? The RCBS X die requires .020" shorter then the maximum.
Hornady did have some cartridges that were shorter then normal, but I don't think 30-06 was one of them?
Hornady did have some cartridges that were shorter then normal, but I don't think 30-06 was one of them?
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OP
OP
Hugger-4641
Member
Actually just measured the rest after sizing in a Full length RCBS U, and about 75 out of 100 measure between 2.469 to 2.476. These are Fed cases that I bought from a THR member along with some virgin brass.
Would you toss em or group them up and use them?
Would you toss em or group them up and use them?
243winxb
Member
Toss any thing shorter then 2.474" The normal trim to is recommended 2.484"
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Nature Boy
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They will all grow into spec with one or two firings
OP
OP
Hugger-4641
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Ok, thanks for the replies. I've never loaded anything that short, was curious if there was some reason someone might.
What @Nature Boy said. If you don’t want them, ship them to me.
1KPerDay
Member
I wouldn’t even think about it again. Are you crimping into a cannelure? If so, why? If not, .006” isn’t going to make ANY difference IMO.
OP
OP
Hugger-4641
Member
Nope, no cannelure. These will be getting 168 A-max.
1KPerDay
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I’d bet a cheeseburger you won’t be able to shoot the difference between the longer ones and the shorter ones. Let us know if you can tell any significant difference
OP
OP
Hugger-4641
Member
Ok, I'm game to try them. Can't really think of anything it would hurt other than maybe a little more carbon in the chamber.
GeoDudeFlorida
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https://www.sierrabullets.com/product/30-caliber-7-62mm-220-gr-rn/
To seat this bullet to the crimp groove and still feed from a box magazine?
Nature Boy
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I’m a fan of the 180 ProHunter for the 30-06
OP
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Hugger-4641
Member
I actually used to hunt almost exclusively with those and 180interlocks in my 30-06. Since the 178eldx came out, I've pretty much switched to them.I’m a fan of the 180 ProHunter for the 30-06
It use to be a Rolex watch or a V-tail Bonanza was how to flaunt your wealth!!I’m a fan of the 180 ProHunter for the 30-06
Now it's posting pics of unattainable reloading supply's!!
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OP
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Hugger-4641
Member
I was wondering if something like that could be the reason, you've probably found the answer.
243winxb
Member
The head to datum should be check. If the shoulder was push back to far, the trim length would be shorter. How does head to datum compare to brass fired in your rifle?
Doesn't matter if you sized the brass, if it was overall to short to start with.
I have found when shooting Hodgdon Youth loads in my 30-06, the head to datum & trim length got shorter, even after sizing. May cause case separation when loading full power loads.
OP
OP
Hugger-4641
Member
Haven't checked it yet. I don't have any Fed cases fired from my rifles,, so I'll have to fire some of the other Federal cases and check. I'm sure the brass thickness at the shoulder is different for Fed than it is the Win, Hornady, and R&P cases that I do have, so I don't think comparing them would tell me.
AJC1
Member
A guy will make good on any to short....
luzyfuerza
Member
Let me get this straight...OP, you're asking about cases trimmed 0.004" shorter than SAAMI minimum?
Since you're not crimping, there is no chance that those 0.004" will appreciably affect your loads in any way.
Since you're not crimping, there is no chance that those 0.004" will appreciably affect your loads in any way.
luzyfuerza
Member
@Nature Boy and others above are absolutely correct; they'll get longer with each loading.
Heck, I trim short sometimes just so I can get more firings before I have to get out the trimmer again!.
Heck, I trim short sometimes just so I can get more firings before I have to get out the trimmer again!.
GeoDudeFlorida
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I think the question was, why would somebody do that; or, was it not deliberate? I can think of a few reasons mostly involving long/heavy for caliber loadings for standard length magazines. There’s probably other reasons, including making a mistake when trimming, but I’ve done both the former and the latter without a second thought.
OP
OP
Hugger-4641
Member
They weren't from you, bought these along with some new brass from another member. I can see myself selling some brass that I got in trade and didn't check the length, so I'm not faulting him.
OP
OP
Hugger-4641
Member
Well, I usually go off of recommended trim, not Sammi min. 2.484 is recommended, so I was concerned enough to ask questions here when I saw 2.470 or less.
AJC1
Member
If they are only one time fired they may have been manufactured short. Seems like everything is shrinking now... on a side note a lot of Hornaday cases are well below Sammi spec 45-70 being the most upsetting. At .004 you may get carbon a little further into the chamber area, but I would imagine them being in spec next firing.Well, I usually go off of recommended trim, not Sammi min. 2.484 is recommended, so I was concerned enough to ask questions here when I saw 2.470 or less.
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