Long Range Hunting Online Magazine


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


Reply

grouping issues

 
LinkBack Thread Tools Display Modes
  #1  
Old 12-16-2012, 08:15 PM
Bronze Member
 
Join Date: Apr 2009
Location: newark ny
Posts: 60
grouping issues

i have a new 243AI, that i have broke the barrel in, it is a 1-8 benchmark. and i am shooting Sierra 85 Gameking, and 90gr Bergers and 80 gr Sierra Flatbase. 44-45 gr 4350. the issue is in a 4 -5 shot groups ill put 3 on top of each other and 1 or 2 will be out 1/2 in or more. i have tried differnet depths with bullet seating. i have checked the bullet rounout .002 nmax. Now my thoughts are it is very short throuted. so i am thinking it needs to be longer so it starts into the rifling better. Is it possible the buleets base is being effected because its so far in the case. Any thoughts
Reply With Quote
  #2  
Old 12-16-2012, 08:46 PM
Platinum Member
 
Join Date: May 2012
Location: N.D.
Posts: 2,634
Re: grouping issues

I'd have the throat lengthened a bit so you can get 100 grain+ bullets at the base of the neck without jamming into the rifling. 8" twist is dang fast for sub 100 grain pills in the 243 or 243 ai. That said, have you tried a bit faster powder?? I've seen 243's really shoot well with vit 540 or I4064 and 100 grain pills. You won't loose that much velocity either.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: grouping issues
Thread Thread Starter Forum Replies Last Post
300 Mag 150 to 180 gr grouping issues twiedenh Reloading 7 03-06-2012 08:21 PM
Weatherby 338-378 grouping issues valin Rifles, Bullets, Barrels and Ballistics 17 04-26-2011 06:44 PM
Horizontal grouping Chuck Boyer Reloading 1 03-07-2010 03:00 PM
two grouping? jacack Reloading 5 10-13-2009 12:26 PM
5 shot grouping issues, driving me crazy buckbrush Rifles, Bullets, Barrels and Ballistics 12 11-29-2008 02:49 PM

Current Poll
In the last 12 months, what was your longest rifle kill on big game?
0 to 200 yards - 25.90%
1,485 Vote
201 to 400 yards - 32.05%
1,838 Vote
401 to 600 yards - 23.11%
1,325 Vote
601 to 800 yards - 10.03%
575 Votes
801 to 1,000 yards - 3.94%
226 Votes
Over 1,000 yards - 4.97%
285 Votes
Total Votes: 5,734
You may not vote on this poll.

All times are GMT -5. The time now is 04:52 PM.


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