I need help !! I have an f class savage with a 30 inch shilen barrel in 6br . I have about 700 rounds through it. I'm shooting 105 amax bullets with 30 grs. of varget ,lapua brass. It's been shooting.1 to .2 inch groups for a year .and all of a sudden 1/2 to 3/4 inch groups at 100 yrds. . tried new brass ,scrubbed the barrel real clean and no change .I have an 8.5 to 25 leupold long range scope and don't think its that . pulling my hair out . Please someone help .
6 br not shooting as good
- Thread starter 6brshooter
- Start date
anschuter2013
Gold $$ Contributor
Check your action screw torque values...I've had the very same thing happen due to action screws loosening.
A j shooter
Shoot often
Adjust your seating depth . It changes as throat erodes .
And if these ideas don't work - put a different scope on it - occasionally, scopes do "quit".
A good pillar bedding job should put an end to possible torque value variation - anything less - than a properly pillar bedded action, is, "a wreck waiting to happen."
RG
A good pillar bedding job should put an end to possible torque value variation - anything less - than a properly pillar bedded action, is, "a wreck waiting to happen."
RG
A j shooter
Shoot often
you are so right great adviseRGRobinett said:And if these ideas don't work - put a different scope on it - occasionally, scopes do "quit".
A good pillar bedding job should put an end to possible torque values - anything less - than a properly pillar bedded action, is, "a wreck waiting to happen."
I know you said you have scrubbed it clean, but have you borescoped it to check for carbon build up in the first few inches? I have had patches come out clean, but borescope showed it still had heavy carbon in the first few inches, especialy with Varget which can be a little dirty. Have you given the throat a good scrub with KG bore polish, Iosso or JB as well as maybe some scrubbing with carbon removers?
+1 for scrubing the first few inches.
Had the same thing happen to mine.
Brought it right back.
Kermit
Had the same thing happen to mine.
Brought it right back.
Kermit
I had the same issue with a 243win shooting 105 AMAX bullets. I ran out of my old batches of AMAX and had to buy a new lot with the AMP JACKETS and i had a train wreck.
Erik Cortina
Team Lapua Brux Borden Captain
Try these things:
1. Clean barrel again as best you can.
2. Check all screws to make sure they are tight. (action, base, rings, etc)
I once shot 70 rounds through my 6.5x47 after installing a brand new NF with different powder charges and nothing would work, some would shoot ok, but when I tried same powder charge again it would get worse. I finally got frustrated and decided to go home. When I got home, I noticed my new NF scope had scratches on the tube, and upon closer inspection, I remembered that I had left scope just snug so that I could adjust eye relief at the range. ;D
So the scope was moving every time I shot. Tightened scope, and small group happiness came back!
3. Adjust seating depth, increase seating depth by .003" until it shoots.
4. If it still doesn't shoot changes scopes and try again.
1. Clean barrel again as best you can.
2. Check all screws to make sure they are tight. (action, base, rings, etc)
I once shot 70 rounds through my 6.5x47 after installing a brand new NF with different powder charges and nothing would work, some would shoot ok, but when I tried same powder charge again it would get worse. I finally got frustrated and decided to go home. When I got home, I noticed my new NF scope had scratches on the tube, and upon closer inspection, I remembered that I had left scope just snug so that I could adjust eye relief at the range. ;D
So the scope was moving every time I shot. Tightened scope, and small group happiness came back!
3. Adjust seating depth, increase seating depth by .003" until it shoots.
4. If it still doesn't shoot changes scopes and try again.
Two things I can comment on.
One of my 6br's now has 3000+ rounds on it and F-class accuracy isn't what it once was. Over the winter I was fooling around making a gauge to measure maximum case length. I discovered a carbon ring in the front of the chamber that I was unaware of. Don't know if it was hurting accuracy, but it probably hasn't helped!
A friend has been struggling with a 6X47L not shooting well. He recently checked headspace on a whim and the bolt closed on a no-go gauge. This is a Savage action that he had re-barreled with a nut. He claims the nut was still tight. Again, not sure that was the issue but something to check.
One of my 6br's now has 3000+ rounds on it and F-class accuracy isn't what it once was. Over the winter I was fooling around making a gauge to measure maximum case length. I discovered a carbon ring in the front of the chamber that I was unaware of. Don't know if it was hurting accuracy, but it probably hasn't helped!
A friend has been struggling with a 6X47L not shooting well. He recently checked headspace on a whim and the bolt closed on a no-go gauge. This is a Savage action that he had re-barreled with a nut. He claims the nut was still tight. Again, not sure that was the issue but something to check.
great advise guys . ill be going to the range this weekend and try some of those suggestions . wish me luck
swed6.5
X1ON
Many of us have been down this road, and i hope you have better luck than i had, if it shot like a hummer and you cant get her in tune again...
Remember barrels are as expendable, even though it hurts.
I just spent 4 weeks trying every thing possible,powder, bullets primers, scope, modified the bedding pillars so recoil lug was tighter to bedding, groups were great when playing doing my tuning i got 1 good match from it.
now no matter what it will print cosecutive poor untunable groups, even triyd a barrel tuner and another bolt? hey hope you get lucky, maybe its just a bad batch of powder. good luck
Remember barrels are as expendable, even though it hurts.
I just spent 4 weeks trying every thing possible,powder, bullets primers, scope, modified the bedding pillars so recoil lug was tighter to bedding, groups were great when playing doing my tuning i got 1 good match from it.
now no matter what it will print cosecutive poor untunable groups, even triyd a barrel tuner and another bolt? hey hope you get lucky, maybe its just a bad batch of powder. good luck
Shynloco
You can lead a horse to water, but ........
6brshooter said:
If I might suggest, try everything Erik Cortina listed. There is one alternative to your problem which I find difficult to believe if you have your bullet count - down the tube - right. And that something is throat erosion which can be addressed by doing what Erik suggested in changing your bullet seating depth. What happened to you happened to me but it did so at 1500 rds down the tube and I actual increased my powder load by 1.2 grs to get back to where I was. Considering you are using Varget and up at 30+grs already, I was at 29.0 of VVN133 and had to get up to 30.2 grs and VVN133 is a milder burning powder than is Varget. Just something to consider but at 700 rds, I wouldn't expect Varget to have that great an effect with what is known as the "6 o'clock throat burn." And that is phenomenon I have yet to hear a good explanation for other than it happens to all barrels no matter who manufactured it.
Alex
smoking-brass
shoot straight....shoot often
I had the same issue with a 243win shooting 105 AMAX bullets. I ran out of my old batches of AMAX and had to buy a new lot with the AMP JACKETS and i had a train wreck.
I agree ..my br doesn't shoot amax's well....but the 105 bergers and scenars shoot lights out. Switch over now.
I agree ..my br doesn't shoot amax's well....but the 105 bergers and scenars shoot lights out. Switch over now.
Forum Boss
Administrator
Another factor that may not have been mentioned is your brass getting stale. I have seen accuracy go off (more through "flyers") after the brass has been fired 6-7 times. This is why many guys anneal. I would be interested to learn what the accuracy is with once-fired brass.
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