Deburring flash hole... Worth it?

[bullseye308]

From what I have read on the subject over the years is that it is just another way to make your ammo the best and most consistent it can be. It removes one more variable that could cost an x at distance, and may help lower es/sd, and may remove that lingering question about a flyer, or maybe not. It won’t hurt anything and may be helpful, the real question is can you tell the difference? Are you good enough to notice the difference at ranges you shoot at? Is your rifle capable of showing the difference in the extra work? Do your components and loading techniques add up to being good enough to notice a difference?

Do I do it for mine? No, I’m not good enough to notice any benefit from it, nor is my rifle, or components. If I was a better shooter, using better components, and wanted to remove every possible variable I would do it just for the peace of mind in knowing that I had removed every variable possible and any error was mine. Would I benefit from it, that’s questionable, but it can be tested easily enough.

 

[lightman]

I debur mine. Just because......... Its only one more thing to do in the whole process and its easy enough to do. I use a tool from K&M and I use a cordless drill. It only needs doing once.

Do it if it makes you feel better. Thats mostly why I do it. It won't hurt and might help.

If you are shooting a full size silhouette target at 7 yards it don't matter. If you are shooting at 600 yards it might help.

 

[Drail]

It depends on how huge the burr is. Sometimes they need to be removed.

 

[igotbadbrains]

I did a test on 100 LC 556 cases, varget and 69 gr. smk's, about two years ago. After being swagged I deburred 50, using the redding tool with a stop for consistency. I noticed no difference in accuracy at 200yds. My es and sd was slightly better but still within the margin of error. Nothing to write home about. As was mentioned earlier the flash holes on LC brass can be really rough. I thought I was on to something while I was doing it, but it just didn't show the improvement I was hoping for. The biggest improvement in es and sd I have made is by using $$$ brass. I never had the patience to measure and match the case capacity of military brass but I suspect that has more of an effect than nasty flash holes.

 

[JJFitch]

From ignition to pressure spike it is a pretty violent event. After swaging the primer pocket I do a quick visual check for a nice round clear flash hole. I have yet to see a rounded over flash hole from swaging using the RCBS set up!

At 74 and using my look alike "Service Rifle" with aperture sights I'm pretty sure flash holes aren't my biggest challenge. But I have a flash hole uniforming tool handy just in case!

Smiles,

P.S. I often find that I'm the only one at the range shooting steel at 200 with iron sights!