The Handloaders Bench Home
Home Search search Menu menu Not logged in - Login | Register

Welcome to HandloadersBench.com. You will receive a activation email with a link in it to activate your account. If you don't receive the email check your spam or junk folders. Email servers look at our email as spam. Our mission here is to provide a place for those interested in the hobby of Reloading Ammunition. We offer a series of forums where they can ask questions, share answers, and highlight successes & failures so that others can learn. If you join our site please be aware that front porch rules apply. If you wouldn't say it on your front porch with grandma, your pastor and your 12 year old niece present it doesn't belong here. The Golden Rule applies. If you can live within those guidelines, Welcome Aboard! Spammers, trolls, and flamers will not last long here, your time would be better spent looking for a board where those traits are acceptable. HB Administration

Trimming Brand New Brass?
 Moderated by: Timberghozt, Rockydog, fryboy Page:  First Page Previous Page  1  2   
 New Topic   Reply   Printer Friendly 
 Rate Topic 
AuthorPost
 Posted: Mon Jun 13th, 2016 04:38 AM
   PM  Quote  Reply 
21st Post
noylj
Full Member


Joined: Thu Jul 1st, 2010
Location: Arizona USA
Posts: 512
Photo: 
Are you a handloader?: Yes
Favorite type of cartridge to load?: pistol
My favorite chambering is:: 45acp
Status: 
Offline

  back to top

I just don't see the amount of worry over crimp or trimming.
Short the cases to form them to your chamber and THEN worry about trimming to consistent length.
I played that game and none of my rifles, including sub-MOA rifles showed any improvement.
Now, if you shooting 0.5MOA or smaller, you "might" see some improvement from a consistent case length and crimp (if you even crimp your bullets).
But FIRST, fire-form them to your gun, then worry about case prep tricks.



 Posted: Tue Apr 18th, 2017 11:57 AM
   PM  Quote  Reply 
22nd Post
ireload2
Full Member
 

Joined: Sat Sep 14th, 2013
Location:  
Posts: 123
Photo: 
Are you a handloader?: Yes
Favorite type of cartridge to load?: I load everything!
My favorite chambering is:: 22 Hornet up to 45-70
Status: 
Offline

  back to top

Never trim new brass unless there is some defect to remove like huge fin burrs peened on the edge of the mouth by tumbling at the factory.

I normally round up the case mouths with an expander ball before I load it.
Shoot it and it will shorten when it expands. Then size it carefully and it will get longer. But not every case will shorten and lengthen the same. Trim only over length cases and shoot again. On the second reloading you might measure all the cases and see if you need to trim all of them.

Most of the time the chamber will be .015 or more longer than the brass so trimming may not get you much other than more consistent crimps.



 Posted: Wed Apr 19th, 2017 11:33 AM
   PM  Quote  Reply 
23rd Post
swampratt
Senior Member


Joined: Mon Nov 30th, 2009
Location: Yukon, Oklahoma USA
Posts: 4505
Photo: [Download]
Are you a handloader?: Yes
Favorite type of cartridge to load?: rifle
My favorite chambering is:: .308 win.
Status: 
Offline

  back to top

When I was testing for .308 brass to fail.
I would not trim until it got into the chamber which was .030" past max book length.

I did not crimp and accuracy at 100 yards was not affected based on case length.
1/2" or less many times at 100 yards.
Of course farther out you may see differences.

I used to trim every time. Now I do not do that but I don't let them get past .015" from book length.



 Posted: Wed Apr 19th, 2017 10:31 PM
   PM  Quote  Reply 
24th Post
HighBC
Full Member
 

Joined: Tue Jun 21st, 2016
Location: USA
Posts: 737
Photo: 
Are you a handloader?: Yes
Favorite type of cartridge to load?: I load everything!
My favorite chambering is:: 7mm RM
Status: 
Offline

  back to top

Norma is pretty nice brass, so you really shouldn't need to trim before the initial load, but it couldn't hurt to check a couple pieces just to put you at ease.

I do chamber check every piece though, just in case the chamber is tighter than manufacturer spec..

HBC



 Current time is 04:33 PMPage:  First Page Previous Page  1  2   
Top




UltraBB 1.17 Copyright © 2007-2008 Data 1 Systems
Page processed in 0.1474 seconds (25% database + 75% PHP). 28 queries executed.