Trimming once fired brass question

[Ducimus]

I've FL sized some 22-250 once fired brass. Even after sizing the brass was a few thou past the max case length. I though it took a few firings before I would have to trim? Maybe I'm doing something wrong?

 

[B]

I asked the same thing, depends on the brass and FL sizing can actually make a case bigger . Unfortunately some brass only needs to be fired once before trimming is needed.

 

[Ducimus]

It's Winchester brass. I'll be neck sizing the next time around. Just wondering if there is a problem. If I have to remove material every time I reload I can't see the cases lasting that long, right?

 

[slushee]

The material does start to get thinner and that is why you inspect your brass religiously to look for signs of head seperation or split necks/case walls .. right

Seriously though its not that uncommon to have to trim every load. I shoot .308 and .223 for auto loaders thus I'm forced to F/L resize every time. And every time I'm trimming a few though off the case mouth.

Neck sizing will slow down this process. And no, you are not doing anything wrong. You are doing everything right to be checking case length and asking questions!

 

[sunray]

You don't have to trim every time, but you should check the lengths to be sure.

 

[shootist22-250]

If you FL size that causes the cases to grow longer. I only neck size and trim to length maybe after 25 or so reloads.
I think if you measure the case neck you will find that after FL sizing only the neck gets longer.
This applies to my 22-250's.

 

[Ducimus]

I believe they did grow a bit after the FL sizing. I'll see what happens after fire these reloads then switch to neck sizing.

 

[Mystic Precision]

If you run at elevated pressures, you will need to trim more often. The shallow shoulder angle allows the brass to flow forward. I shoot a 223 and trim every 3 firings. I only neck size and bump the shoulder with a body die after I trim.

Some case designs just stretch. The 22/250 is one of them.

There is nothing wrong.

Jerry

 

[BattleRife]

Brass stretches the most when it is new. I count on all cases, in all calibers, needing to be trimmed after the first or second firing. Often they will need to be trimmed again after the fourth or fifth. After that they often don't ever need to be trimmed again.

 

[B]

Brass stretches the most when it is new. I count on all cases, in all calibers, needing to be trimmed after the first or second firing. Often they will need to be trimmed again after the fourth or fifth. After that they often don't ever need to be trimmed again.

Great to hear, it's a slow enough process on a single stage.

 

[Kenny_G2]

I found I had to trim all my Winchester brass that came for once fired factory ammunition. I just figured they keep the casing on the longer side when loading factory ammo.

 

[577/450]

If you are using range brass there is one type, can't remember the headstamp that has a roll crimp that needs to be trimmed every time. it also only wil take 3-4 feloads before failure.

 

[Ducimus]

If you are using range brass there is one type, can't remember the headstamp that has a roll crimp that needs to be trimmed every time. it also only wil take 3-4 feloads before failure.

It's brass from the 40 round value packs.

 

[scout]

Having reloaded the majority of the rounds for my rifles from 1-fired brass, it was a bit of a surprise (once I finally got around to trying new brass) to find that new brass should also be trimmed!