Max run out on neck after resizing?
- Thread starter josebd
- Start date
jepp2
Gold $$ Contributor
I would be more interested in what your bullet runout is after seating. But I spend a lot of effort on generating ammo with as small of runout as I can. Most of my effort in doing so is probably unnecessary.
this question is typical on these forums.
very generic question, no CONTEXT.
the results is answers that are the same, very generic.
DEFINE "target shooting at 300 yards"
what rifle, what sights/optics
what target..how big is the x ring
what position are you shooting from.
what is the load
very generic question, no CONTEXT.
the results is answers that are the same, very generic.
DEFINE "target shooting at 300 yards"
what rifle, what sights/optics
what target..how big is the x ring
what position are you shooting from.
what is the load
ClassCat
Unlimited
What difference would that make ?
Well it's not customerie to run much run out in match rounds but I had a friend run low on ammo at a 1000yds match went to a shoot off I said good luck he said I have 5 thousands run out in these rounds but I am shooting for score he shot a 50 score an a 1.700 inch group blowers him away.
Ledd Slinger
Silver $$ Contributor
I agree that the biggest thing is checking the runout on the bullet bearing surface of loaded rounds. I will check runout one time on a new barrel or if I get a new sizing die. For a barrel I load a handful of rounds, check runout, then fully chamber them in the rifle, and check runout again (make sure your ejector is removed from the bolt face) . If its good, I know the chamber is in alignment withe the bore. For a die, i just load rounds and check them. If both are good, I never check runout for that rifle again.
I think if he had that info he could have 10 posts in the thread instead of one drive by?
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This curmudgeonly, useless answer is typical from this member. If you can’t answer the question, you can always complain about it.
lol and your answer was useful how ??
well then go shoot
i would never shoot .002 run out, but then i do not pull buttons thru necks.
you should be able to hit something
well then go shoot
i would never shoot .002 run out, but then i do not pull buttons thru necks.
you should be able to hit something
tmwinds
Gold $$ Contributor
This one will do: https://www.vocabulary.com/dictionary/curmudgeon
No, they're neighbors and the conversations are top shelf, secret squirrel greatness.I do believe fguffey has changed his user ID.
ClassCat
Unlimited
GARRULOUS is more fitting
I agree with jepp2. The runout on the bullet is most important. If you're not turning the necks, the runout on the outside doesn't really tell you much. The Forster die centers from the outside, not the inside. Lapua brass, just like every other brand, is not perfect. Here are some Lapua .308 cases with a light cut. You can see most didn't cut all the way around which means they had a thicker and thinner side. If you turn the necks, turn all the cases the same and try for a minimum of 3/4 of the surface cut. At that setting a good portion will probably be cut 100%.
ClassCat
Unlimited
I agree T. But the purpose of cutting is to bring all the necks to a uniform size. I found that .013 usually accomplishes that for a 308.
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dcali
Bullet Maker
A typical factory die with unturned necks ought to get you under .003". With my turned necks and factory Redding bushing dies used sans expander, I typically see roughly 1.5 thousandths just ahead of the case mouth. I'm not sure how you get much more than that, to be honest. Something is wrong if it's over .003" when using decent gear and cases.
As for how much it matters, you'll just have to test. Conventional wisdom says "not much". Mileage may vary.
As for how much it matters, you'll just have to test. Conventional wisdom says "not much". Mileage may vary.
I agree. Depends on the brass. Some brands will clean up 100% at .014" like the Hornady case in the picture. I think my Lapua cleaned up at .0125" I don't worry about a small amount the cutter doesn't touch as long as it's enough to center the neck in the die all the way around. I don't like to get the necks any thinner than necessary.
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