Author Topic: Flash hole uniforming (Read 520 times)

Rum River · « **on:** March 14, 2006, 04:59:40 AM »

Just bought a big batch of .45-120s from Buffalo Arms. Used my Lyman uniforming tool to remove burrs. I've read where some shooters put a bevel on the inside of the flash hole to better spread the flame for more consistent ignition.

Question: How many BPCR shooters out there feel it's necessary to bevel the inside of the flash hole? How many feel it's enough to just deburr?

cooper · « **Reply #1 on:** March 14, 2006, 10:08:27 AM »

I don't know about the Lyman tool, but my K&M deburring tool is designed to bevel the flash hole as it deburrs.

In fact.....I'm trying to think about it, but it seems to me that if you deburr, you almost have to be putting at least a slight bevel on the flash-hole.

Unless your deburring tool looks like a flat end-mill.

zrifleman · « **Reply #2 on:** March 14, 2006, 03:55:20 PM »

In benchrest shooting it has been shown to have minimal if any positive effect. If it gives you peace of mind, do it. It's probably a waste of time.

sharps4590 · « **Reply #3 on:** March 15, 2006, 12:02:05 AM »

I did it on one box of 20, 45-90 Bertram Brass and quite honestly I couldn't tell any difference. Those 20 rounds are mixed in with the rest of my brass now. If it makes you feel better or more confident than by all means, do it. At least you'll know they are all the same.

Vic