Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels and Ballistics


Reply

Throat issuses

 
LinkBack Thread Tools Display Modes
  #1  
Old 01-27-2014, 08:30 PM
Bronze Member
 
Join Date: Jun 2010
Posts: 65
Throat issuses

Guys needing a little advice here. I just had a 6.5x284 chambered. And I told my smith I wanted to shoot 140gr. Bergers. I was looking in the Berger manual and the coal is 3.228. In my chamber with bullet touching the lands it's 3.085. I guess my question to you guys that know a lot more than me is will this effect anything other than case capacity or should I have my smith cut the throat to Berger specs?
Reply With Quote
  #2  
Old 01-28-2014, 01:51 AM
Silver Member
 
Join Date: Feb 2008
Posts: 488
Re: Throat issuses

Quote:
Originally Posted by rdsewell View Post
Guys needing a little advice here. I just had a 6.5x284 chambered. And I told my smith I wanted to shoot 140gr. Bergers. I was looking in the Berger manual and the coal is 3.228. In my chamber with bullet touching the lands it's 3.085. I guess my question to you guys that know a lot more than me is will this effect anything other than case capacity or should I have my smith cut the throat to Berger specs?
Unless you supplied a dummy round for your smith to work off, how would he know what throat length to cut?
Just because Berger list a certain COAL doesn't mean that's what will work in your rifle.
Is your rifle a long action or a short action?
What length is your magazine?
Do you want to single feed or load from the magazine?

There are many variables that need addressing, and most smiths, like myself, don't have working crystal balls. Unless we're given all the info, we can't just guess.

Cheers.
Reply With Quote
  #3  
Old 01-28-2014, 06:02 AM
Platinum Member
 
Join Date: Dec 2005
Location: Tucson Az
Posts: 1,280
Re: Throat issuses

I helped a friend work up a load for his 6.5-284 last year. His OAL was far shorter than the 6.5-284 Norma sammi spec of 3.220" just like yours. It was put together to ber used as a hunting rifle using the magazine. There was no problem putting together a load and it was very accurate.

You can work with what you have unless want a repeater and you have a long action then you could have the gunsmith lengthen the throat.
Reply With Quote
  #4  
Old 01-28-2014, 08:58 AM
Bronze Member
 
Join Date: Jun 2010
Posts: 65
Re: Throat issuses

The gun is built on a long action receiver. Believe me guys when I say I'm not trying point a finger. I am just wanting to know is there any benefits to stretching the OAL to specs. Mainly group size, it shoots a 1" to 3/4" groups now. But it doesn't like a real hot load now.
Reply With Quote
  #5  
Old 01-28-2014, 09:48 AM
Platinum Member
 
Join Date: Jul 2004
Location: Texas
Posts: 5,446
Re: Throat issuses

Quote:
Originally Posted by rdsewell View Post
The gun is built on a long action receiver. Believe me guys when I say I'm not trying point a finger. I am just wanting to know is there any benefits to stretching the OAL to specs. Mainly group size, it shoots a 1" to 3/4" groups now. But it doesn't like a real hot load now.
Try backing off the lands, some barrels like more free bore and I have seen rifles shooting Bergers like .080 to .100 jump to lands for best accuracy.

This will also lower pressure and increase velocity.

The rule is, there is no rule when it comes to what a barrel likes.

J E CUSTOM
__________________
"PRESS ON"
Reply With Quote
  #6  
Old 01-28-2014, 10:37 AM
SPONSOR
 
Join Date: Mar 2010
Location: on the Southern Plains
Posts: 1,128
Re: Throat issuses

Quote:
Originally Posted by MagnumManiac View Post
Unless you supplied a dummy round for your smith to work off, how would he know what throat length to cut?
Just because Berger list a certain COAL doesn't mean that's what will work in your rifle.
Is your rifle a long action or a short action?
What length is your magazine?
Do you want to single feed or load from the magazine?

There are many variables that need addressing, and most smiths, like myself, don't have working crystal balls. Unless we're given all the info, we can't just guess.

Cheers.
What?! No magic wand, either?
__________________
"Shoots real good!": definition; it didn't blow-up in my face. Not everything can be fixed on an internet forum!
Reply With Quote
  #7  
Old 01-28-2014, 10:39 AM
Edd Edd is online now
Platinum Member
 
Join Date: Jan 2011
Location: Tulsa
Posts: 1,064
Re: Throat issuses

Quote:
Originally Posted by rdsewell View Post
should I have my smith cut the throat to Berger specs?
I wouldn't want it that long. That would make it about 2 inches from the base of the case to the back of the bearing surface. That's about .100" longer than I would want.

Your Gunsmith made it about .040" shorter than the maximum I would want. How long is it going to take for your throat to grow .040"?

Krieger says it can grow up to .030" during break in.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Current Poll
Do you archery hunt for elk?
YES - 32.52%
80 Votes
NO - 50.81%
125 Votes
Not yet, but I plan to. - 16.67%
41 Votes
Total Votes: 246
You may not vote on this poll.

All times are GMT -5. The time now is 09:37 PM.


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