Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Photography > Gun Photos


Reply

my long range rigs

 
LinkBack Thread Tools Display Modes
  #8  
Old 03-07-2013, 11:19 PM
Gold Member
 
Join Date: May 2012
Location: columbus,ohio
Posts: 575
Re: my long range rigs

go at least 26". don't have that much freebore cut in the throat,u'll never get the a max's to shoot with that much freebore.i believe mine is at .200 and it is actually too much for the 168's already.
Reply With Quote
  #9  
Old 03-07-2013, 11:24 PM
Platinum Member
 
Join Date: Mar 2012
Location: ND
Posts: 2,712
Re: my long range rigs

Quote:
Originally Posted by vegas steve View Post
go at least 26". don't have that much freebore cut in the throat,u'll never get the a max's to shoot with that much freebore.i believe mine is at .200 and it is actually too much for the 168's already.
I just sent the smith an email letting him know i would like to go 26", thanks for that, but i disagree about the freebore, i sent him a dummy round with the A-Max at about .270 freebore and the boattail shank junction is above the neck/shoulder junction of the case by about .050 i believe. I have plenty of the bullet in the case.

Riley
__________________

I'm 15
"Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth."
~George Washington

"The only advantage a light rifle has is weight, all other advantages go to the heavy rifle."
~ JE Custom

Biggest fail of 2014 so far... http://www.longrangehunting.com/foru...ea-ftf-128972/
Reply With Quote
  #10  
Old 03-07-2013, 11:36 PM
Gold Member
 
Join Date: May 2012
Location: columbus,ohio
Posts: 575
Re: my long range rigs

well if you want to be .010 off the lands don't go any more than .174 freebore. i have my 168 smk's set at the top of the boat tail even with the shoulder neck junction and i'm about .065 from the lands.
Reply With Quote
  #11  
Old 03-07-2013, 11:41 PM
Platinum Member
 
Join Date: Mar 2012
Location: ND
Posts: 2,712
Re: my long range rigs

Quote:
Originally Posted by vegas steve View Post
well if you want to be .010 off the lands don't go any more than .174 freebore. i have my 168 smk's set at the top of the boat tail even with the shoulder neck junction and i'm about .065 from the lands.
i dont have the book in front of me right know but i should tomorrow but applied ballistics by bryan litz lists all the bearing surface measurements of popular 7mm bullets and i will check what the 168 smk, and 162 A-Max are and report back here.
take care,
Riley
__________________

I'm 15
"Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth."
~George Washington

"The only advantage a light rifle has is weight, all other advantages go to the heavy rifle."
~ JE Custom

Biggest fail of 2014 so far... http://www.longrangehunting.com/foru...ea-ftf-128972/
Reply With Quote
  #12  
Old 03-08-2013, 04:30 PM
Platinum Member
 
Join Date: Mar 2012
Location: ND
Posts: 2,712
Re: my long range rigs

168 grain smk: Bearing surface is .460
168 berger VLD: bearing surface is .462
162 grain Hornady A-Max: bearing surface is .470
195 berger EOL: bearing surfacd is .502.

the neck length of the 284 win is .280 when trimmed .005 short of maximum. so .470 - .280= .190" which is the lowest amount of freebore wanted for the A-Max, so .270 freebore will still leave .200" of bullet in the case when touching the lands, which is still plenty of bullet when the case neck is only .280.

.502 - .280= .222 freebore as minimum for the 195 EOL, so at .270, i will still be able to move the bullet .048 off the lands and still not hit the donut in the case neck.



Riley
__________________

I'm 15
"Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth."
~George Washington

"The only advantage a light rifle has is weight, all other advantages go to the heavy rifle."
~ JE Custom

Biggest fail of 2014 so far... http://www.longrangehunting.com/foru...ea-ftf-128972/
Reply With Quote
  #13  
Old 03-09-2013, 05:07 AM
Gold Member
 
Join Date: May 2012
Location: columbus,ohio
Posts: 575
Re: my long range rigs

i think ur screwing yourself with that much freebore but what do i know? i can tell you that if i set a 168 smk to .010 off the lands i only had about .150 of the ogive in the neck ,and thats not enough to control the bullet upon ignition,and my freebore is suppossed to be .200.
Reply With Quote
  #14  
Old 03-09-2013, 01:40 PM
Platinum Member
 
Join Date: Mar 2012
Location: ND
Posts: 2,712
Re: my long range rigs

Quote:
Originally Posted by vegas steve View Post
i think ur screwing yourself with that much freebore but what do i know? i can tell you that if i set a 168 smk to .010 off the lands i only had about .150 of the ogive in the neck ,and thats not enough to control the bullet upon ignition,and my freebore is suppossed to be .200.
If you give me the COAL from base to bullet tip with the 168 smk i can give you an estimate of what the free bore in your barrel is.
__________________

I'm 15
"Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth."
~George Washington

"The only advantage a light rifle has is weight, all other advantages go to the heavy rifle."
~ JE Custom

Biggest fail of 2014 so far... http://www.longrangehunting.com/foru...ea-ftf-128972/
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Current Poll
Do you archery hunt for elk?
YES - 32.82%
43 Votes
NO - 51.91%
68 Votes
Not yet, but I plan to. - 15.27%
20 Votes
Total Votes: 131
You may not vote on this poll.

All times are GMT -5. The time now is 09:03 PM.


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