Chamfering flash holes?

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Tim L
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Joined: Mon May 19, 2014 7:11 pm
Location: Townsville

Chamfering flash holes?

#1 Postby Tim L » Sat May 04, 2019 2:49 pm

Does anyone chamfer their flash holes?
If you do, what's the process and whats the expected benefit?

Gyro
Posts: 764
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Location: New Zealand

Re: Chamfering flash holes?

#2 Postby Gyro » Sat May 04, 2019 4:28 pm

Tim L wrote:Does anyone chamfer their flash holes?
If you do, what's the process and whats the expected benefit?


Timothy, I thought you'd never ask. Yes I do.

The process : a number 2 center drill on a stalk that's long enough to reach into the case flash hole inside and twist by hand to remove any small 'dags' that are normally there. With SRP brass use a number 1 center drill, on a stalk.

The expected benefit : the usual story - in the absence of the kind of scientific proof near impossible to produce even if u happen to have a properly built rail gun and a tunnel - it makes me feel better.

lonerider43
Posts: 427
Joined: Thu Sep 01, 2016 6:55 pm

Re: Chamfering flash holes?

#3 Postby lonerider43 » Sat May 04, 2019 4:31 pm

i do,inside debur ,primer pocket hole chamfer.
i use a drill bit.i think it should work like a gas jet and allow for a more even complete burn.
maybe im wrong...i dont care,i do it anyway.
Australian's Against "Gun-A-Phobia"

Tim L
Posts: 876
Joined: Mon May 19, 2014 7:11 pm
Location: Townsville

Re: Chamfering flash holes?

#4 Postby Tim L » Sat May 04, 2019 6:59 pm

Yeah, I've done it, for much the same 'feel good' reasons. I got these from BRT.
The reason i ask is because I've got myself a high speed camera.
I still don't know if chanfered is better but the flame is definately different.
I'll have to figure out how to get videos up to share.
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RJNEILSEN
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Re: Chamfering flash holes?

#5 Postby RJNEILSEN » Sat May 04, 2019 7:01 pm

I do with Winchester brass. I don't bother with Lapua. On the Winchester brass some pretty big dags do come out. Not sure if it has any effect, but It's a one-off process that is quick, so why not.


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