I was wondering if down through the years there have been any custom makers who have offered a mechanical accuracy corrector or adjuster as part of their custom package of excessories?

I did a search but couldn't find anything.

What I was thinking about was whether anyone had offered any type of small mechanical device that fit inside the stock forearm that the shooter could adjust by various means to apply different pressures from different directions on the barrel in order to correct accuracy problems that were incapable of being addressed in any other way.

I did read about upward pressure bedding, and other glass bedding measures. But those don't seem readily adjustable.

the old Brown barrel device that was on some of the Remington M37's and Winchester 52's comes to mind.

Just not sure how it would work and look decent on a big rifle.

ISS

DON'T FEED THE TROLLS!

quote:

Originally posted by Idaho Sharpshooter:
the old Brown barrel device that was on some of the Remington M37's and Winchester 52's comes to mind.

Just not sure how it would work and look decent on a big rifle.

ISS

I was thinking more of a small device that was entirely inlaid into the stock inside the forearm rather than an external type of device like say the Boss that Winchester tried.

Years ago I saw a target rifle that had screws installed in the forend at 45 degrees at the front end of the forend. The owner told me that they were used to tension the barrel for accuracy.

British Enfield military rifles had such an adjustment in the stock under the barrel.

quote:

Originally posted by huffmanite:
British Enfield military rifles had such an adjustment in the stock under the barrel.

Do you have a photo?

he's just never seen a 40x

No, I never have seen a 40X. What does it have?

Model 52 D Winchester has tension lugs for tuning the barrel and ammo

I have learned that if you tighten the loose nut behind the trigger it does wonders.

Lindy, I have actually tried this tuner:http://www.stocks-rifle.com/. I had a Model 70 that was always throwing a flyer and thought what the heck, the guy had a money back guarantee. It took one week to get to the west coast from here in MD a week to work on it and a week to get it back. I reassemble the rifle per directions and started with the pressure right in the middle. I shot a nice triangle around an inch. I then turned the screw 10 turns clock wise and the group opened up but still decent. I then tried 20 turns CCW and got a nice repeatable 5/8 to 3/4 groups. I am really happy and had almost this much $ 150.00 in bullets and powder not to mention my time. Check out the website and videos, I am satisfied.
Best Regards
Chris

quote:

Originally posted by rodger wright:
Model 52 D Winchester has tension lugs for tuning the barrel and ammo

Yep, and a darn good job it does too. My brother took the Indiana State outdoor title...I want to say it was 1975....using his 52D. Our father got it for a song, since he worked for Olin, who owned Winchester.

We "tuned" it by putting a dollar bill between the barrel and stock and snugged the screws just enough to provide resistance to moving the dollar. It works....I watched him take out a house fly on his sighter target while I watched thru my spotting scope. And no, I'm not making this up. of course, having a 20x Unertl scope mounted for the any-sight match didn't hurt any.

Most smiths give them away for free. It is a couple business cards

Problem I always had with most of the ones I saw was they used the stock as the base point. If the stock moved the pressure changed. Never used a 52D but I've always ended up with the most repeatable accuracy by free floating.

but if the stock moves the pressure will change anyway, won't it?

quote:

but if the stock moves the pressure will change anyway, won't it

If you build a stock with a built in forward pressure point like a lot of factory rifles and the stock moves then yes accuracy and even point of impact can move.

If the action is properly bedded and the barrel free floated then normal movement of the forearms will not impact the barrel. Of course warp the stock enough you can make impact.

Every BR rifle I've owned the action was glued in solid and the barrel touched nothing.

I can see how some of the various systems to very pressure and pressure location can tune in the barrel. I just have trouble seeing how they will stay in tune using the forearm as a base. But heck I've sure been "incorrect" before.

I had a bull barrel Mod52 that had this device installed from the factory and saw quite a few of them in use in competition at the time (early 1950's). Worked for me though I would not say it was absolutely required for accuracy ,it certainly worked. Cannot imagine such a device in use on a sporting rifle especially one such as Mr.Wiebe builds with the miniature forearms. Where would you put it?

quote:

I had a bull barrel Mod52 that had this device installed from the factory

Did you adjust it and leave it or was it something you adjusted each competition?

My wife's Remington M37 has one on it.

Works...

Rich

I don't remember fiddling with it. I think I just set and forgot it. Believe it or not I set it with a Unertl scope in target mounts I think a 1 1/2" then shot it with redfield olympic irons and it worked perfectly. Looking back I would think the scope would have changed it considerably but the stock really was not free floated it actuallly rested on what looked like 2 ball bearings.I don't remember much pressure on the adjusting screws when turning them. Those were days when I could see and hold - looooong gone.

quote:

Originally posted by Duane Wiebe (CG&R):

quote:

Originally posted by Jim Kobe:
DON'T FEED THE TROLLS!

Right on, Jim! did you ever consider 22WRF's in need of "barrel adjusting"

Only if they have been in a fire.

I don't know whether they need adjusters or not. I have only been shooting 22's since the late 1940's and building rifles since 1952 but barrel adjusters such as I had were common to the shooters of the time. The 1950's. If memory serves not too many years ago you could get attachments to tune barrels on some Winchester/Browning Mdl 70's. I seem to remember an engineer who was significent at Remington that actually turned some barrels in a coke bottle shape to modify harmonics. I think he retired here in Green Valley,Az some years ago. If this is all BS then a lot of competatnt people have been fooled. I know my rifle shot smaller groups when it was dialed in but I'm a marjority of one and have no national (or at least forum credentials as an outstanding expert ).I for one think spending many many hours painstaikingly scraping wood to inlet with precision is no better than a really good epoxy bedding job and damn sure costs more in time and dollars - which are more or less the same thing. One of my Instructors in gunsmith school who was a very good stock builder almost abandoned hand inletting when he discovered Devcon plastic steel on target/varmint guns. Please understand these are absolutely my own opinions and I know very few share them. It is my understanding that some bench rest guns are actually glued in to the stocks and one of the top benchrest guns I saw once at TSJC had no actual stock as such.