Flash hole uniforming?

BrentM

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I generally uniform as well. It's a 1x deal and minimal effort. On my prs rifle brass I have some sorted and fully prep'd and some that are as is from the factory. I really don't see much difference in that rifle. It shoots fine. Last time I shot it for groups was 800 and it printed 3". I called it good enough and have left it alone.
 

misterc01

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Feb 15, 2019
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Florida Panhandle
As part of my brass prep I always uniform the flash pockets. deburr flash hole, measure neck thickness and turn if needed, then segregate by thickness. Those are all one time actions. After sizing, I check and make sure all cases are trimmed to the same length. The goal as others have said is consistent brass.
 

swampbug

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Oct 26, 2020
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Dallas
Why wouldn't you?
The OP seems to be asking, given what he shoots, will ONLY uniforming flash holes improve his .5 to .75 inch groups or will it be a waste of time.
ONLY uniforming his flash holes is a waste of time bc it will not improve his group size.
 

Savage 12BVSS

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I de burr the inside flash hole because sometime I will have a case with the inside burr large and sloppy enough to really interfere with the ignition of the powder. Then I would be scratchin’ my head wonderin’ WHY. So I check the box on that factor and move on (satisfied I just saved/made myself $.50 -$.60 per case). It has become principal part of my brass prep – uniform primer pockets, de-burr inside flash hole, check length, chamfer inside and outside case neck, burnish internal case neck.
Brass prep is just that.........how much do you do to remove inconsistency? They tend to be a collection of small things but they can add up to a noticeable difference, I will add I weight sort as well.
Consistency = Accuracy.
Can't say that enough :)
 

mpayne

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Oct 26, 2012
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Eastern Washington State
The OP seems to be asking, given what he shoots, will ONLY uniforming flash holes improve his .5 to .75 inch groups or will it be a waste of time.
ONLY uniforming his flash holes is a waste of time bc it will not improve his group size.
He said he likes to tinker and i think it will help him sleep better at night!
 

Rardoin

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South Louisiana
Shoot a 5 shot group of debur/no debur at 100yds back to back and you decide if it is necessary. I don't do any brass prep other than trim/chamfer/debur the case mouth. I don't weight sort, primer pocket uniform. I do meticulously determine the best charge weight and seating depth for my bullet/barrel. I compete at 600 and 1000yds and am competitive on a national level and have to have 400+ pieces of same lot brass at the ready . To be more clear....I used to do everything imaginable to my brass in search of precision; I did all those things 'the internet' said to do. When I first started competitive long range shooting I spent way too much of my free time time prepping brass. I finally started actually testing whether these things panned out on paper in addition to collaborating with national champions in my discipline and realized what does not matter and begin culling those steps from my routine. Life is much simpler now and I have more range time and my performance continues to improve.

Will uniforming flash holes help? Not in my experience in three different chamberings. It may hurt if you inadvertently open up the holes. Do it carefully if you choose to go that route. If doing this for small amounts of brass the time it takes is probably insignificant.
 

JGRJR

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Jul 19, 2013
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According to Bryran Litz testing, it does not seem to make much difference.


Here is another big LRH thread that has this video in it.


I do not do it for good prepped brass, like Lapua.
 

JMW67

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Dec 6, 2012
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TEXAS
If you are not doing a complete brass prep I would not bother with the flash holes I have several rifles I do no brass prep for I do use lapua or peterson in those rifles though
 

Mrvmax

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May 30, 2020
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Texas
Just use good brass, Lapua, Peterson, ADG and go practice. There are so many needless rabbit holes copied and pasted on the Internet.
Maybe one day we will be able to find good brass again. Most of it, even the cheap stuff, is unobtanium.
 

vancewalker007

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Mar 30, 2013
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654
My hunting rifles tend to shoot 3/4" & under , some 1/2" & under. I'm using off the shelf Win & Rem brass. I don't segregate my brass by weight. I am not a competitive shooter. My question is , would I be waisting my time to uniform the flash holes in my brass? Your thoughts ? What is there for me to gain ? Of course I do like to tinker.
As far as wasting time depends what brand of brass you are using. Brass from high end makers like Lapua, Nosler, Norma, ADG, Gunwerks (which I beleive is also ADG) have drilled flash holes so there is nothing to trim. You can easily look in fresh new brass to see if there are any punch shards in your brass.
 

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