Do you all trim 9mm brass?

[Walkalong]

I do trim mixed revolver brass for more uniform crimps. I do not trim it if I buy a big batch of one brand which is very uniform in length.

 

[emb]

If you do, you'll only do it once! It is not worth the effort for target loads and makes no difference at all in how it performs.

 

[Trent]

Nope. I've never had to trim 9mm, 45, or any other straight walled case.

I've actually measured it getting SHORTER over generations of loading. Not longer.

 

[Trent]

I do trim mixed revolver brass for more uniform crimps.

THAT is not a bad idea.

I just started getting in to revolvers, previously only loaded for autos. But what you said makes a heck of a lot of sense for magnums.

 

[SSN Vet]

another 'no' response here.

 

[ranger335v]

I only trim rimless handgun cases if they're too long and that's rare; reason is that they headspace off the case mouth so making them shorter doesn't do anything good.

The 9mm really doesn't need "crimping" anyway, all you need to do is remove any flare you may have done and return the mouth to original diameter so it will feed, chamber and lock easily.

 

[Steve in PA]

Been reloading for over 22 years, never trimmed a piece of handgun brass in all those years.

 

[Slamfire]

Nope. Don't trim pistol brass.

Trimmed 44 Magnum brass to use in a M1894 Marlin rifle. Did not make any difference there either.

 

[rikman]

I've been reloading since 1963 and have only trimmed 5 Federal 357 Sig cases, just because I wanted to. My round count is well over 750,000+ rounds, and those five cases are the only handgun rounds I've ever trimmed, or ever will.

Life is too short to spend it trimming pistol brass.......

Hope this helps.

Fred

Sage advice Fred lol

 

[mljdeckard]

I'm still a rookie, and I don't know which rules I can bend, so I'm pretty cautious. I sample check cases for length, but I have not yet needed to trim any 9mm or .45 cases. Based on what I have read here, I doubt I will. If I get an odd occasional one that has stretched, I will probably just chuck it.

 

[Trent]

You'll split the necks from work-hardened brass way before you ever need to think about trimming them.

Although I don't track pistol brass by generation, I've got some 45's that are sitting at 15x by now, I'm sure. Every once in awhile I'll have a bullet split the case neck. I pull the bullet with my fingers, pour the powder in the hopper, toss the round in a 45 and pop the primer. Then chuck the ruined brass in the recycle bin. Doesn't happen very often, and I've got some old WWII surplus that's been run through the autos so much the rim is nearly ruined from extraction.

 

[ReloaderFred]

As plentiful as 9x19 brass is, there's no need to even consider trimming it. I'm looking at buckets full of it in my garage, and the thought of trimming any of my handgun brass gives me the shivers. I'd rather spend the time loading and shooting.....

Hope this helps.

Fred

 

[floydster]

Me no trim pistol brass eder.

Smokeyloads