Straight wall pistol brass.

[cabezaverde]

Do you guys chamfer your straight wall pistol brass?

[JimB..]

Lol, you assume that we trim it!

Okay, when I trim it I do chamfer so as to avoid tearing the poly coating.

[cabezaverde]

I meant new brass.

[cwtebay]

I do. I don't like lead or copper rings when I seat. But I am quite certain that I am in the minority.
(I also use a Lee FCD on all of it! I'm sure that may bring some hate and discontent also - but I do me)

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[Baltimoreed]

I run new pistol brass through my sizer, expander dies just like fired brass. I only load lead boolits so cases need to be expanded. I chamfer rifle brass after trimming. I guess if you're loading jacketed bullets you could chamfer new stuff.

[upnorthwis]

I have never chamfered a straight walled pistol brass in my life, and I used to shoot thousands a year in Cowboy Action.

[challenger_i]

One thing commonly overlooked is that properly chamfering the mouth will help reduce splitting, as it breaks up the stress risers.

[Seeker]

Uhh, no....should I?

[20:1]

No, never. In my younger days I did a lot of long range shooting and trimmed each lot of brass to the length of the shortest case after the first sizing. I used my Lyman Power trimmer with a carbide cutter to cut the case mouth squarely so I never had to chamfer cases. I left the inner edge square in the hope for more uniform crimps.

[SquibCity]

i usually do chamfer cases the first time i load them, makes them smoother when expanding and seating.

[35 Rem]

I don't. Way back years ago I would keep my revolver cases trimmed to get uniform crimps but now I'm more into volume loading. I adjust my crimp die to work with the longer cases and let the crimp be compromised on the shorter ones. I don't hunt or compete with the ammo so it works fine for my purposes. Also it's been probably 10 or more years since i bought new handgun brass. I buy used now for both price and availability.

[poppy42]

One thing commonly overlooked is that properly chamfering the mouth will help reduce splitting, as it breaks up the stress risers.

Ah never mind!

[725]

usually

[dverna]

I cannot remember ever buying new pistol brass. Lots of "once fired".

I have never chamfered pistol brass and I do not know of anyone who has. Back in the day, I hung with good Bullseye shooters and never heard of chamfering cases. I know a few guys added taper crimp dies to their Stars but my mentor just had the normal crimp set up. We did a lot of Ransom Rest testing and 50 shot groups were 2 1/2" at 50 yards out of the Clarks and just over 3" with the S&W 52.

When I trim CF rifle cases I chamfer the neck...for no good reason really...just anal about rifle ammunition.

[Baltimoreed]

Only chamfer on even days during months that end in ‘R’ in odd numbered years. Oh yeah I almost forgot, during a New Moon. Wink wink nod nod.

[gunther]

Have read that 45 auto brass isn't made long enough to start with. What I've measured certainly wasn't.

[Bigslug]

No. Straight out of the polisher & into the press.

For pistols, it's like Josef Stalin says: "Quantity has a Quality all it's own"

[AnthonyB]

I chamfer just to lessen the case mouth expansion. It also seems to make the progressive press work a little more smoothly, bullets "sit" better as they enter the seating die.
But, I am retired and enjoy reloading. The added time isn't a factor for me.
Tony

[Harter66]

I load every round to hunt , even if the quarry is the savage and dreaded paper target .

After several readjustments of my 45 Colts dies I started measuring cases that at one time were all 1.285 ........ Yeah well it was time to retire those cases . It's no wonder the crimps were all over the place with cases being 1,260 to 1.270 . They will make fine 45 S&W trimmed back to 1.115 . They will be chamfered . 40 cycles on those first 500 cases was a long time ago . To be honest I don't know if I did them or not . I probably did . I don't know if it saves mouth splits or not , I've shot a lot of 38&357 and just like the 45 Colts I get body splits. 9mm and 45 ACP are the only mouth splits I see on my bench .

I'm going to go with anything that brings you confidence in your loads and makes you more confident in your shot whether it introduces any tangible advantage or not is worth doing . Everything that you do to reduce variation makes a better load ........ whether or not you or your gun can take advantage of that is where the decision has to be made .

[Shawlerbrook]

I do.