Rifle crown help

[Mt.Boy]

Have a couple old H&R m12 rifles. They both shoot good but one is just really in consistent. It will shoot a tight group every now and then. But not as much as the other. I got my bore scope out and looked at the crown. Big difference in the two. I am no expert but wanted to get some opinions on these pictures of this crown. To me it looks pretty rough thanks.

 

[1911nut]

Hard to tell from the pics, drag a Q-tip around the edge of the crown to see if the fibers snag on a rough spot.

In doubt? Get it re-crowned.

 

[Liven The Dream]

Same Ammo used in both?
Could be that one likes a different Ammo ?

 

[Mike_McAllister]

That looks very rough to me. I am a machinist who has worked on rifle barrels. I think having that rifle re-crowned might help its accuracy. And by the looks of it, if you use a Q-Tip, that crown is definitely going to pull fibers from it...

 

[Mt.Boy]

Same Ammo used in both?
Could be that one likes a different Ammo ?

Yes same ammo

 

[Mt.Boy]

That looks very rough to me. I am a machinist who has worked on rifle barrels. I think having that rifle re-crowned might help its accuracy. And by the looks of it, if you use a Q-Tip, that crown is definitely going to pull fibers from it...

Yeah it looks really rough compared to the other. But honestly I can’t get it to pull any on a q tip

 

[Mt.Boy]

Here is the crown on the other gun.

 

[MrG52D]

Re-crowning never hurts, it may not help, but at least you rule that out.

 

[Preacher]

Crown it and be done with it....

 

[Mt.Boy]

Re-crowning never hurts, it may not help, but at least you rule that out.

Thanks kinda what I am thinking

 

[swd]

The first barrel definitely needs a fresh crown.

 

[Tad_Earhart]

The crown is not helping anything. Before you re crown it, slug it to see where its at on that front too. You may be better off to get a little more took off than just freshening up the crown.

Tad

 

[Walt Krafft]

I had one that came from the cmp with a bulge about 10 inches from the muzzle. Cut it to 16.5" and it started shooting great.

 

[Mt.Boy]

The crown is not helping anything. Before you re crown it, slug it to see where its at on that front too. You may be better off to get a little more took off than just freshening up the crown.

Tad

Thanks, I slugged it last night. Seems good all the way to the muzzle. And tighten s up right at the very end

 

[Rsadams]

I doubt it would hurt anything to recrown it... I have known for decades about how important it is to find the right ammo for rimfire but the other day I shot some factory Winchester through a Tikka that shoots half inch three shot groups and it turned that gun into a three inch three shot group gun.... I have never seen a box of ammo so crappy in fifty years of shooting.... I fired the whole box to try and at least salvage the brass... When I got home just out of instinct I rechecked all the torque settings on the action and scope , everything was fine... I then proceeded to clean it and it was full of copper, I think that will be my last box of Winchester anything...

 

[gunsandgunsmithing]

I would re crown that. Not sure what made it look that way but it can't hurt and might make a big difference in it. At the very least, it won't be in your head, which makes a difference, all by itself.