9mm case length help

[hundy]

I was going to start reloading 9mm today. When I checked my 3 reference books they all had different data on case length.
Here is what they stated:
1. Max .754 trim to .749
2. Max .754 trim to .751
3. Max .754 trim to .744
So here is my question. Does anyone actually check and trim cases after sizing? If so, what size do you generally go for?
I sized one and measured, it came out to .748.

Thank you

Jay

[Aidenpeacemaker]

trimm

If your making match ammo and sort all your brass by headstamp and weight it then trimm all the brass to your liking. If your plinking don't worry about it. Just load it ..pistol brass is not like rifle brass.

[blsniper]

I've never trimmed pistol brass. Because pistol cases are straight walled they don't expand in length once the neck is sized. I only inspect for ones that have been stepped on or cracks in case if I'm picking up range brass.

[drdarrin@sbcglobal.net]

I'm sure someone trims 9mm, I don't happen to be one of them. As long as they are within tolerance, I load them, after checking for cracks of course.

[hundy]

Thank you

Thank you for the replies. These reloads are just for plinking at the range. I just wanted to be sure. I am going back out to start.
Thanks again

Jay

[David-K]

Like the others have said....for plinking, don't even give it a second thought. Just check for the usual: case cracks, damaged extractor grooves, etc...

[mjmagee67]

Trim pistol cases huh wutt why? Bored, can't sleep, OCD?

[Gryff]

So here is my question. Does anyone actually check and trim cases after sizing?

Nope. I'm not a long-time loader, but I've made about 10,000 rounds of 9mm for action pistol competition and target shooting. Never once did I measure a case, and I have no problems with FTF/FTE. My opinion is that for anything other than extreme precision shooting, it isn't necessary.

[J-cat]

If you want your taper crimp to be the same from one round to the next, trim them all the same. I don't always trim 9mm, but when I do I prefer my Wilson trimmer.

[TKM]

Just the thought of trimming 9 makes my fingers hurt.

[stilly]

I was going to start reloading 9mm today. When I checked my 3 reference books they all had different data on case length.
Here is what they stated:
1. Max .754 trim to .749
2. Max .754 trim to .751
3. Max .754 trim to .744
So here is my question. Does anyone actually check and trim cases after sizing? If so, what size do you generally go for?
I sized one and measured, it came out to .748.

Thank you

Jay

If it helps you, I have a 9mm brass trimmer that I will GIVE to you. It was one of the first things I ever bought when I got into reloading. To this day I still have NO idea what 9mm is supposed to be at, All I know is that my guns like 'em at 1.130 or so. (I think)

So yeah... Today I lost my footing and slipped in the garage and farted and when I got up I had 75 9mm made ... That is how easy and fast that stuff gets made. No thinking, just doing...

Sounds like a cross between an Alberto's and a Home Depot commercial...

[croue]

I trim my pistol brass once when I first get it. I use a lee trimmer that puts them right at .7475 by my calipers. (19mm). That's pretty much the bottom of the spec.
Then I make my "ugly brass" patina recipe, color them up and never check length again.
I just separate my ugly brass from the pretty yellow stuff when I come back with all the range sweepings and check and trim the newbies only.
C

[CSACANNONEER]

The only reason to trim would be to get a consistent crimp. If you are not a bulleye shooter, you probably will never see any difference between trimmed and untrimmed straight walled brass.

[uhlan1]

Never have, perish the thought.

[stilly]

The only reason to trim would be to get a consistent crimp. If you are not a bulleye shooter, you probably will never see any difference between trimmed and untrimmed straight walled brass.

Yeah. I can see doing this and the thought HAD crossed my mind in the past, but then if I did it I would not have a nice new in the pack 9mm trimmer ready to give to someone also...