Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Techniques For Reloading


Reply

Another trimming question.

 
LinkBack Thread Tools Display Modes
  #1  
Old 07-31-2012, 10:42 PM
Silver Member
 
Join Date: Dec 2010
Location: Booneville, Ar
Posts: 290
Another trimming question.

After watching Shawn Calocks video on long range hunting I have a question. In the video he made sure to trim cases till each got a full cut. My question is after doing this each brass will be a diffrent length. Should all brass be trimmed to the shortest brass so that they are all the same length or is that of little consequence? Thank's Brad
Reply With Quote
  #2  
Old 07-31-2012, 10:46 PM
Silver Member
 
Join Date: Dec 2010
Location: Booneville, Ar
Posts: 290
Re: Another trimming question.

I also use a run of the mill RCBS trimmer that is not micrometer adjustable thus when trimming I'm pretty much just guessing at the length till trimmed. Would I do much better with accuracy if using a trimmer that I can measure for while trimming? Thank's, Brad
Reply With Quote
  #3  
Old 07-31-2012, 11:25 PM
Platinum Member
 
Join Date: Dec 2009
Location: 4422′44″N 1082′35″W
Posts: 3,846
Re: Another trimming question.

I cant speak for shawn but in my opinion. I like to trim brass so there is a complete ring so that the case mouth is square and the bullet leaves the case on all sides at the same time. Typically your trimmer is set to one length. But maybe he trims more or less on each one depending on the length.
I reccomend the redding 2400 trimmer or if you really want precision the Sinclair ultimate trimmer.
__________________
Mike

Anything less than overkill is underachievement!

" Real elk guns start with the number 3 or bigger and blow two holes, one in and one out." - My Dad
Reply With Quote
  #4  
Old 08-01-2012, 12:18 AM
Silver Member
 
Join Date: Jan 2010
Location: Western Pennsylvania
Posts: 200
Re: Another trimming question.

I use a lyman trimmer and set it up with a case trimmed to proper dimension. I mic one and trim SLOWLY without the stop locked until I get to the length I want. Then I use that case as my gauge to set the stop and go onward from there. I will trim to .010 shy of max length for my chamber every loading cycle for consistency. I also anneal every 2-3 cycles depending on caliber.
__________________
There's no time quite like trigger time! .................................................. .................................................. .................../\.
Reply With Quote
  #5  
Old 08-01-2012, 01:28 AM
Gold Member
 
Join Date: May 2009
Location: Australia
Posts: 733
Re: Another trimming question.

Cases should be trimmed as a "batch " . Measure all the cases untill you find the shortest case and set up to square that case up and all the rest should end up the same. If the batch is large then it could be quicker to pick a length and trim to that then put aside any that don't square up all the way around .
Then measure the batch that did not square up and find the short one and reset and trim all to that. Trimming is more interesting and productive than measuring is.
Reply With Quote
  #6  
Old 08-01-2012, 04:43 AM
Platinum Member
 
Join Date: Jan 2007
Location: PA
Posts: 1,069
Re: Another trimming question.

Trimming brass too far below the barrel chamber length encourages formation of a carbon ring just in front of the case mouth. Eventually this carbon build up will result in severe loss of accuracy if not removed. To keep carbon ring to a minum, trim all cases within about .003" below the SAMMI casre length for your caliber.

There are several methods to remove carbon ring, just google it.
Reply With Quote
  #7  
Old 08-01-2012, 07:21 AM
Platinum Member
 
Join Date: May 2012
Location: N.D.
Posts: 2,889
Re: Another trimming question.

Quote:
Originally Posted by Gene View Post
Trimming brass too far below the barrel chamber length encourages formation of a carbon ring just in front of the case mouth. Eventually this carbon build up will result in severe loss of accuracy if not removed. To keep carbon ring to a minum, trim all cases within about .003" below the SAMMI casre length for your caliber.

There are several methods to remove carbon ring, just google it.
If you use a bronze brush when cleaning your rifle and use powder solvent, this is a non-issue. It's those who choose to clean with patches only or nylon brushes that have odd issues like this. I trim .010" to.015" down from max. and have fired thousands of rounds with everything from 5.56 nato to 405 win with some really nasty bore eaters like the 7rum in the mix. I've never gotten a "carbon ring" in my chamber.
I tried going to shooters choice only for a while(after I ran out of Hoppes) and actually nearly filled the rifling on the 7rum with carbon deposits for the first few inches, but one heck of a scrub down with hoppes #9 and a bronze brush solved that little problem. The shooters choice is reserved for copper fouled bores only now. Funny how the new bottle(shooters choice) says to use powder solvent also, but I don't remember the old one saying that.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Another trimming question.
Thread Thread Starter Forum Replies Last Post
Case Trimming sendero72 Reloading 16 08-01-2012 05:16 PM
Brass trimming question lineman2002 Reloading 3 04-19-2012 11:50 AM
Meplat trimming? RangerBrad Long Range Hunting & Shooting 8 03-21-2012 10:01 AM
Trimming a die Jinx Reloading 5 07-17-2008 02:59 PM
Case trimming encoreguy Reloading 2 10-25-2006 05:52 AM

Current Poll
Are you on Facebook?
Yes - 46.36%
1,116 Vote
No - 19.53%
470 Votes
No, but I may join - 1.79%
43 Votes
No way, are you kidding? - 36.06%
868 Votes
Total Votes: 2,407
You may not vote on this poll.

All times are GMT -5. The time now is 10:06 PM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC