close
Long Range Hunting Online Magazine


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

Rifles, Bullets, Barrels & Ballistics Applied Ballistics

Reply

7mag vs. 7-08 sight in

LinkBack Thread Tools Display Modes
  #1  
Unread 07-14-2013, 03:11 PM
Junior Member
 
Join Date: Jan 2013
Posts: 25
7mag vs. 7-08 sight in

My 7-08 Weatherby Vanguard w/ 1:9.5 twist loves Hornady superformance 139 gr. sst's. I average .360" 200 yd groups.
I bought a TC Venture in 7 mag last year, same barrel length, it has a 1:10 twist. Started shooting a few months ago after mounting scope, got serious with sight in this weekend. I had used 150 Fed. Fusions to get close because they are cheaper and planned on hunting with the 139 Hornady's. I started at 350 yards because I wanted to see how the BDC reticle worked on the scope.
I got 4" - 5" groups w/ the 139 grain sst's and 1.5" w/ 150 fusions ???!!!
Moved to 250 yards today to verify zero did some tweaking on scope and Fusions are real close to zero, SST's all over the place ! Just wondering what everyone thinks, because I thought the SST's would shoot well, like the 7-08. Do you think it's the velocity of the Superformance ? I wouldn't think the slight twist rate difference would matter.
Sorry for the long post
Reply With Quote
  •   #2  
    Unread 07-14-2013, 04:18 PM
    Silver Member
     
    Join Date: Mar 2012
    Location: New germany, NS
    Posts: 484
    Re: 7mag vs. 7-08 sight in

    7mm 1 in 10 twist with 150 0r 160 grn bullet around 3000fps should give you excellent accuracy.
    I have 7mmrm 1 in 10 twist and it loves 150 grn at 3010fps (.750" at 100 yd)
    with 139 / 140 I need to slow them down to 2600 to get the same results.
    Reply With Quote

      #3  
    Unread 07-14-2013, 08:40 PM
    Platinum Member
     
    Join Date: Dec 2011
    Location: Michigan
    Posts: 1,121
    Re: 7mag vs. 7-08 sight in

    +1. Your rifle is telling you what it likes!
    Reply With Quote
    Reply

    Bookmarks

    Thread Tools
    Display Modes



    All times are GMT -5. The time now is 08:56 AM.


    Powered by vBulletin ©2000 - 2016, Jelsoft Enterprises Ltd.
    Content Management Powered by vBadvanced CMPS
    All content ©2010-2015 Long Range Hunting, LLC