I recently purchased a Remington 40x chambered in 6x47 Rem. The gun was shooting .2 " groups regularly during the summer months. Lately I'm having issues holding .75 " groups at 100 yds. I'm shooting 70 gr. Sierra Matchkings over 26.7 grs. of H322. This is the same load I was shooting from the very beginning. I have tried going up and down with the loads and changing seating depths from .010 " off the lands to jamming them into the lands. Nothing has made a difference. Could this just be the finicky nature of this round?
6x47 Rem Issues
- Thread starter Remshot
- Start date
Remshot,
By any chance have you changed to a new lot of bullets? Sierra has a nasty habit of mixing bullets from 2 or 3 different machines/dies and putting them in one box. Took my .22BR from .350 groups to over .75 size groups. Quite a cluster, until I figured out what the problem was.
Paul
www.boltfluting.com
By any chance have you changed to a new lot of bullets? Sierra has a nasty habit of mixing bullets from 2 or 3 different machines/dies and putting them in one box. Took my .22BR from .350 groups to over .75 size groups. Quite a cluster, until I figured out what the problem was.
Paul
www.boltfluting.com
What twist is your barrel? I own a 14 twist 6x45 built with a 3 groove Krieger that won't stabilize 70 grain Ballistic Tips in cold weather. An unlikely cause, but something to consider.
It's not a stability issue, then.
You might try pulling the firing pin assembly out of the bolt and check to see it isn't lubed with something that's too thick, but that's a long shot.
I will try that. Everything else has not made a difference. Thanks for the help guys!
The 6-47 is a very forgiving round to load for . I've got many ! I would start looking at mechanical issues after a good cleaning . Check case length , runout ( if new brass or dies ) make sure the bolt handle isn't hitting the stock , same for the trigger . Toss the 40x frt tensioners , or back them off . Have you made any , ANY changes in load , technique, trigger , bedding , bolt ?
Forgot to ask about the scope , and it's mounting . Things shrink a bit when the temp drops . Scope internal sometimes stick .
Forgot to ask about the scope , and it's mounting . Things shrink a bit when the temp drops . Scope internal sometimes stick .
I've tried to keep everything the same with the exception of the scope. I did put a Weaver T36 scope on this gun shortly after I bought it. The gun was built in early 1968 and it has the original wood stock. No tensioner son the stock. The barrel is floated and I can't see any contact points for the bolt handle or trigger. When I bought the gun the seller had 80 rounds of unfired new RP brass that I have been using. I also bought 100 rounds of Nosler brass. Both are shooting the same. I don't know the actual round count but the barrel looks practically new.
I have been using BR4 primers. I may try the H4198. Does anyone know what the torque spec is for the action screws on the wood stock 40x? I have been torquing them to 40 inch pounds.
Provided it’s been pillared and bedded proper so as to remain stress free then action screw torque shouldn’t matter a lick. If not and if a colder/drier climate shrinks or otherwise causes movement in the wood then tightening the action screws forces the action to try to conform to the 'new' shape of the stock’s inletting/bedding (both are gonna get bent), inducing stress and squirreling harmonics in doing so.
I have been torqueing the screws to 40 inch lbs. Does anyone know what they should be for this gun?
I personally use 40"lbs on the front and 30"lbs on the back screw. If bedding is stress free torque is really not that critical. Has worked very well for me. Good luck.
Paul
www.boltfluting.com
Paul
www.boltfluting.com
The last term I'd use to describe the 6x47 Rem is "finicky". Usually it's a very forgiving round to load for and very polite on the bore. I agree with others that something possibly has changed with the rifle. Once I ran in circles trying to figure out why a 308 suddenly went from a .3" gun to damn near shotgun patterns. After overthinking loads, rebedding the action and an embarrassingly long list of other brainiac theories I gave up on the gun and stuck it in the back of the safe. A year or so later I got bored and checked out the gun again with fresh and considerably less frustrated eyes. Within minutes I discovered the "mystery" issue: two scope mount screws were loose. What?! How could I have made such a rookie mistake? DUH!
Lesson learned. Start with the basics.
Lesson learned. Start with the basics.
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