What happens when your rifle brass is too long? [Archive] - Glock Talk

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cysoto
04-20-2014, 11:34
I just finished trimming 300 pieces of .308 Win brass cases to 2.005" with a hand-crank cutter and let me say that IT SUCKS!

This is the first time that I have trimmed these cases and the starting length was approximately 2.025". I hadn't noticed any loss in accuracy nor any other issues with these cases the previous two times that I had shot them but cut them anyway because "it was the right thing to do."

Now that I have wasted three hours of my life trimming these cases I feel obligated to ask: what happens if your rifle cases are too long? What kind of issues can I expect to see? :dunno:

Hoser
04-20-2014, 11:39
The end of your chamber can act like a crimp die and crimp the case into the bullet. However it is a crimp die that wont let go and pressures skyrocket.

Bring your brass down to my place and you can use my 1050. 300 rounds is maybe 10 minutes...

cysoto
04-20-2014, 11:48
I may take you up on that offer next time I have to do this; did I mention that IT SUCKS?!

I am also looking at something called the "World's Finest Trimmer" made by a company named Little Crow Gunworks. Have you heard of or used this device? It seems like it would make the trimming process much, much easier.

http://www.midwayusa.com/product/119117/little-crow-gunworks-worlds-finest-trimmer-243-winchester-260-remington-7mm-08-remington-308-winchester

http://media.midwayusa.com/productimages/880x660/Primary/119/119117.jpg

F106 Fan
04-20-2014, 12:05
The Hornady Case Prep station will do a pretty good job as well. It will also clean the primer pocket and brush the inside of the neck. It works fine for a few dozen cases. Not so good for a thousand .223s. I don't bother cleaning the primer pocket and neck for AR ammo.

For large batches, a Dillon 650 with trimmer is the way to go. You can resize and trim about 1400 cases per hour. Clearly, Hoser's 1050 will do them just as fast, if not as faster, but I'm not much into changing the setup on my 1050.

Richard

unclebob
04-20-2014, 12:06
Yes heard of it, have not tried it. But understand it works great. If I was to get back into rifle reloading I probably would get one.

norton
04-20-2014, 15:17
The Hornady Case Prep station will do a pretty good job as well. It will also clean the primer pocket and brush the inside of the neck. It works fine for a few dozen cases. Not so good for a thousand .223s. I don't bother cleaning the primer pocket and neck for AR ammo.

Richard

I have one. Its a great tool, if a little pricey. Looks good mounted on your bench too.

WeeWilly
04-20-2014, 18:21
Most guns have a little leeway in the leade to accommodate longer than spec brass, but as Hoser points out, at some point (a point you may not exactly know), the case mouth will be slightly clamped, the bullet won't be released and you will likely break something.

There are a number of power trimmers like the WFT out there, Possom Hollow, CTS, etc. I think they all work well enough for volume reloading. I like the Giraud.

BC Dan
04-20-2014, 18:45
After doing several hundred .223 brass on a hand lathe-style trimmer, I bought a Giraud. My hands thank me! Now I look forward to trimming. Wow, talk about fast and accurate. It's spendy, but very well made. It's been an awesome purchase for me.

fredj338
04-20-2014, 21:21
You don't have to trim your cases until they reach max length, usually 3-4 FL sizings. I like my Hornady case prep center. I just work in 50rd batches, then use an x die for 223 & 308.

Gunnut 45/454
04-21-2014, 12:39
As been stated already, let your brass grow too much and you'll run into pressure spikes! Never a good thing! If your rifle has a tight chamber it could be catastrophic.
I trim my brass, one to get better accuracy, two to get better fit in the chamber, feeding.:supergrin: Especially if your using the rounds in a semi-auto.:supergrin:

Clusterfrack
04-21-2014, 13:01
What gun are you shooting these from? I neck size only for .308 and .260 bolt guns.

cysoto
04-21-2014, 18:15
What gun are you shooting these from? I neck size only for .308 and .260 bolt guns.

It's a .308 bolt rifle; a Savage.

Clusterfrack
04-21-2014, 18:38
It's a .308 bolt rifle; a Savage.

Are you full length sizing each time? You might try just a neck sizer, as long as you're going to be firing your brass in the same chamber.