Hello,

How many alternate methods of regulating doubles are there ?

These are the ones I know of for fixed barrels.

1. Traditional method, join shoot, adjust wedge, shoot etc. etc.

2. ?

For adjustable barrels.

1. Galzan Professional, Krieghoff Classic, adjustable wedge incorporated into sight/barrel clamp, one fixed barrel and one adjustable.

2. Baikal, muzzle barrel clamp with one fixed and one "floating barrel", Jack screw half way down the barrels, floating ribs. ( bows the barrels in and out )

3. Tanfoglio, Adjustable cams or non concentric bushings, inserted into the muzzles.

4. ?

Any other or thoughts on other methods of regulating ?

Thanks

Nitro

For fixed barrels, I have heard of someone using Wire wrapped around the barrels and tightens or loosens it as they shoot it. Then once it's regulated, solder the barrels.

The person who I have heard use this method has regulated a heap of DR's - and they all shoot.

.

Fixed barrel doubles: 2. Using a very small all aluminum jig with 8 set screws, adjust, shoot, adjust, shoot, etc. until perfect; solder in place, shoot to check. That is the system, but the rest I hold confidential. It is used in Europe by many gunmakers.

Within reason if the barrels are fixed already changing the bullet weight, or the powder type and charge; all to be done within safe normal load development standards can dramatically affect the apparent regulation of a double.

After I had claw mounts put on my Browning Continental I had to switch from 150 grain to 200 grain bullets to get the same accuracy. If I had known this I would have done the claws sooner!

I diagree with touching the crowns except if the gun does not shoot at all and some (possible) damage / wear to the crowns is visible.

I have seen a non shooting gun fixed by re doing the crowns before the second alternative of re regulating which wasn't needed in the end.

Once the metal is gone, it can't be put back.

.

Ditto

quote:

Originally posted by 500N:
I have seen a non shooting gun fixed by re doing the crowns before the second alternative of re regulating which wasn't needed in the end.

My Tolley had shitForCrowns, and a very discreet recessed crown job fixed the issues.



Cheers
Tinker

that's interesting, the other DR where the crowns were done was a Tolley.

.

I was unaware that the K gun had adjustable barrels. I don't believe that mine does. Is this only for the certain (smaller) calibers?
Peter

Peter

That is correct, The Classic has adjustable barrels. ( Up to 9.3 )

The Classic Big Five does not. ( Over 9.3 )

Nitro

500-

quote:

Originally posted by 500N:
...the other DR where the crowns were done was a Tolley.

Mine is a 500/450 Magnum 3-1/2" BPE, Jones/BA/Hammers.
The charge prescription engraved on the barrels is 5-1/2 Drams.
It shot for crap before the subtle crown job, now it shoots beautifully with the Hornady 350gr SNRN at 2025fps in Bertram 450No2 brass and lots of Varget.

It rips.
It's got a single standing express sight and a small low front blade.
Cool rifle.



Cheers
Tinker

Tinkerer

Same caliber as well. That's interesting.

500-


That is indeed very interesting.
The rifle you speak of is only the third 500/450 Magnum 3-1/2" BPE that I've heard of, including mine.

The other one lives up in Darwin, NT



Cheers
Tinker

quote:

Originally posted by a.tinkerer:
500-
That is indeed very interesting.
The rifle you speak of is only the third 500/450 Magnum 3-1/2" BPE that I've heard of, including mine.

The other one lives up in Darwin, NT

Cheers
Tinker

It might be the same one.

I think the Darwin one ended up in Queensland.

.

You mean Tony's rifle?

Is it yours now -- or were you working on it for someone else?

If I recall, his had the Giant Grip.
I would love to have had a shot at owning that rifle.



Cheers
Tinker

You talking Tony as in Marrakai ?

No, I think Tony still has his.

In that case, I think it must be a different gun.

I have to talk to Tony today (I just got back from Darwin) and missed him so I will ask him.

He knew the other gun.


.

That's it.


I'd still like to have his rifle!
I think he knows that though.



Cheers
Tinker

quote:

Originally posted by a.tinkerer:
That's it.
I'd still like to have his rifle!
I think he knows that though.
Cheers
Tinker

You have no hope. I rarely hear of Tony selling anything
let alone one of his DR's !!! LOL

.

Bless his little heart...



Cheers
Tinker

I have known guys who regulate shotgun barrels by judicious chamfering of the muzzle - they take a few tho off the side to which they want the load to go.

These guys swear that most of the 'smiths who regulate DRs do this.

quote:

Originally posted by Oxon:
I have known guys who regulate shotgun barrels by judicious chamfering of the muzzle - they take a few tho off the side to which they want the load to go.

These guys swear that most of the 'smiths who regulate DRs do this.

It might be done but It's not the correct way of doing things
in regards to regulating a DR.


Sounds like a few backyard gunsmiths at work IMHO.

They are probably the one's who rechamber 375 2 1/2" to 375 Flanged Magnum
in the old Cogswell and Harrison guns. LOL

.


.

quote:

Originally posted by 500N:
It might be done but It's not the correct way of doing things
in regards to regulating a DR.


Sounds like a few backyard gunsmiths at work IMHO.

They are probably the one's who rechamber 375 2 1/2" to 375 Flanged Magnum
in the old Cogswell and Harrison guns. LOL
.

............AMEN to that! Sounds more like backyard plumbers!

.....................

quote:

Originally posted by Oxon:
I have known guys who regulate shotgun barrels by judicious chamfering of the muzzle - they take a few tho off the side to which they want the load to go.

These guys swear that most of the 'smiths who regulate DRs do this.

Probably because they are too tight arsed to pay someone to do it properly.

.

quote:

Originally posted by Oxon:
I have known guys who regulate shotgun barrels by judicious chamfering of the muzzle - they take a few tho off the side to which they want the load to go.

These guys swear that most of the 'smiths who regulate DRs do this.

nobody i know of, this side of the pond does it this way.
the proper way is to move the wegde and resolder until you get it right, it is not rocket science just hard work

best

peter