doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com Barrel regulation problem

This may be a silly question. If you have a side by side that seems to have a problem with a set of barrels that were not properly regulated can screw in chokes be installed to correct this problem?

yes....most of the time

I think so. You can also use the "Dremel fix" and do it yourself if the barrels are not too far off. Basically you shave off a tiny amount from the the muzzle in the direction where you want the shot to go.

Sabatti did this to regulate lower-cost double rifles and got badly burned for it - it's tacky to do this on a rifle since the bullet doesn't travel true but on a shotgun it doesn't matter.

I have never done this but have seen results of the technique.

If I were to do it I might try first using a triangular scraper - only a few tho need be removed from the crown.

If the shotgun warrants it, the only other recourse is to have the barrels re-regulated.

Hopefully others will comment on this - perhaps someone who has first-hand knowledge of this technique.

Depending on how much metal/choke you have in that area, you could have a gunsmith eccentrically hone the chokes (similar to installing eccentric choke tubes). Just putting choke tubes into the bbls may not solve your problem, since they should be installed parallel to the existing muzzle line. Briley can advise you on either option. You'll need to be able to tell them how far off of center the offending barrel(s) is/are. Most expensive option would be to strip the ribs and relay them. Spanish gun barrels for the most part are brazed so this isn't possible; only soft soldered barrels can be fixed that way.

Good luck, this problem has been the bane of my existence lately.....test firing for regulation is the only peace of mind when entering into a purchase.
V/r
Maxey

Don't be lulled into thinking it's a price issue either. It can and does happen on low grade guns all the way up to and including Purdeys. I was at a shooting school where a fellow had a brand new Purdey whose right barrel shot 8 inches high and 5 inches to the right. He didn't seem all that concerned although the inctructors were adamant it should be corrected. His wife, who paid for the gun was less than pleased to put it mildly.

For me if you shoot a gun great don't ever shoot it for POI. If it's not right you'll never hit well with it again. Either do it as soon as you get it or stick your head fimrly in the sand and leave it there.

Have the bores been worked on - opened chokes, honing, etc? If not properly done, that could put a straight set of barrels out of regulation.

Heritage Gunsmiths (Jim Eyster) would be another alternative.


+1

Ok for the real answer. I had this gun made from a well known gunmaker here in the U.S.. At the time I was aware of barrel regulation issues they have had. I told them to make sure the gun was regulated.
I never really shot the gun at all till recently. I have yet to put it on the patterning board to really see what it is doing.
This is something I plan on doing in the next few weeks. If I find it is a barrel regulation I suppose I could go back to them since it is gurenteed for life by them.
But I was also thinking of having it tubed. I would like Briley's installed anyway and just wonder if they / and the choke tube installation could correct any barrel issue it may have.
Oh by the way it is a bi-gauge set and I have not shot the other set of barrels.

Hi, I had a problem with B.R. awhile back with a Grulla 209H. At 16yds the right bbl shot 8" to the right and 6" low from the POA. No matter how I mounted the gun, aimed, snap shot it still was that bad.

Briley was able to correct it so it shot about 50/50. All they needed was a pattern sheet when I sent the bbls in to be tubes. They did a wonderful job and the results were what I needed.

Good luck to you, I know how you feel!

Best!

Greg

Just for info. I had Heym make another set of o/u barrels for me. When we test fired it, they were not satisfied with regulation and I was privledged to watch as they corrected it. They used a reamer, with one person turning it from the breech, and another person "crowding" it to the side, with a yoke. The education was worth a lot to me.
Mike

It can be corrected with tubes, but should probably be corrected by either sodering the tubes properly if that is the problem or recutting the choke (which will also open them up) if it is a choke alignment issue.

Barrels out of alignment is more common than some know as most never pattern their guns. Further most alignment issues are minor and not very pronounced.