chatter marks on chamber and accuracy

[tbrice23]

I have a new savage m12 br in 6mm norma. The chamber has the worst chatter marks on the shoulder. New lapua brass has generated good groups(5 shots .180 to mostly in the .3's). I have a return label to send it back to Savage to clean up the chamber or rebarrel. Im afraid they will send it back worse than what I have now. Should I leave well enough alone or roll the dice and hope for improvement in accuracy with a smooth chamber.

 

[Sully2]

I would NOT accept that as "quality" on a factory new rifle

 

[tbrice23]

I would NOT accept that as "quality" on a factory new rifle

I have a new savage m12 br in 6mm norma. The chamber has the worst chatter marks on the shoulder. New lapua brass has generated good groups(5 shots .180 to mostly in the .3's). I have a return label to send it back to Savage to clean up the chamber or rebarrel. Im afraid they will send it back worse than what I have now. Should I leave well enough alone or roll the dice and hope for improvement in accuracy with a smooth chamber.

Thanks Sully. I cant believe they have a quality control department.

 

[SidecarFlip]

Was probably a Monday morning, 8:30 am rifle or someone forgot to turn the coolant on.......

Things happen with production rifles, any brand.

 

[tbrice23]

I cant believe it groups. One reason I hate to see it go is that it renders ZERRO copper after first range session, hope its as accurate or better with a smooth chamber. I just forsee problems later in brass life even though I have a forrester bump die.

 

[Mikecr]

The problem you'll have is in setting headspace/bumping.
Gonna be a challenge to do this with munged up shoulders

 

[tbrice23]

I tried bumping up to .003 and still had problems .Even after re annealing the ones that chambered a little harder set up different vibrations and just didnt group with the others. That lapua brass isnt cheep.

 

[Jinx-)]

very similar to Savage LRPV in 6BR Norma I got as a replacement...

So I replaced its barrel with Criterion, issue solved....

 

[tbrice23]

Just sent it back UPS on Savages dime. If the new one doesn't shoot ill use it for fire forming.Who chambered it for you? Does anyone know of a highly recomended gunsmith in northwest indiana? Ive worn out my 338 win mag and I have a vanguard s2 rc that im going to use for a fence post.

 

[Jinx-)]

I did replaced its barrel by myself, its Savage after all, only thing you need is Savage barrel nut wrench and go/nogo gauges, here's a link about replacement Criterion Barrel and issues I had with Savage... Criterion Barrel on Savage LRPV — Pre-Fit Does the Trick « Daily Bulletin

 

[tbrice23]

I thought they only made blanks . Heard good things about them how does it shoot

 

[Jinx-)]

nope not blanks, they make Savage prefits., call Northland Shooters Supply, Jim got good selection of them

 

[tbrice23]

Thanks. I im done with factory barrels.