Just a crazy Idea about the hing pin and loose barrels..

[HutchHandiMan]

I had this crazy thought and am wanting some feedback from our more mechanicaly inclinde...

what about an oblong hing pin that could be turned while inside the frame.  this would allow the shooter the ability to tighten loose barrels and loosen tight ones...

of course I see no manufacture doing this as it could be a huge liability for them, but what about making one for our one use...

any ideas?

[cheatermk3]

Nice thought..an adjustable-for-fit hinge pin.  

Seems to me though that if it was loose enough in it's fit to be turned it'd be loose enough to hammer the hole out eventually, ruining the frame.  Not to mention possibly moving while firing or opening/closing the action.

Several here have posted about shimming the underlug to tighten up a loose barrel; and grinding it out for a too-tight fit.

[quickdtoo]

The hinge pin requires a press to have it removed, that gives you an idea of how well an adjustable pin would work. There are methods described in the FAQ for fitting a barrel. Probably the best idea has been presented by Fred, with H&R increasing the size of the hinge pin and making the undlerlug out of better material, either one would help maintain proper fit.

[218Bee]

Hmmmm.."Dial-a-Barrel"? The marketing would be easy :grin:

Quick, have you tried Fred's devcon method?

 I've been having a devil of a time with my aught-six barrel. I'm on my second set of feeler gauges, working with the .008 and .007 shims. The four hour JB seems to work better adding less thickness than the standard stuff. Seems I always sand to much off with the crocus cloth. Guess I just need a lighter touch. Or more barrels to practice on :wink:

Rick

[quickdtoo]

No, I haven't...the only used barrel that I've bought lately locks up tight on a .001" blade in 2 of my frames and has good latch engagement. Having multiple frames can make fitting much easier!!! :roll:  I look forward to trying Fred's method, though, it's very promising. :wink:

[Fred M]

Quick and 218ee

Note:The oblong hinge pin diameter is not workable. Because of the various radii it would not fit the seat.

All I can tell you sofar, I have fired over 50 rounds loaded to hunting specs 20 100gr at 3050 plus and 30 some 75gr at 3450 not max but warm.

Started with "0" gap and still have "0" gap and the action is tight. I did some changes on the forearm pressure and removed the rubber washer.

This extra pressure tightened the forearm hinge piece. When pressing the latch lever the barrel will not fall away. Ready for the next gopher shoot.

If the barrel falls away you are too loose and accuracy will suffer. You need a tight fit between the forearm and the action, but only after you have a tight fit against the standing breech.

A tight breech will pull the barrel back with it the forearm. The mechanics are quite simple once you take a good look at it.

Last test several 3 shot groups were under 1/2". Also this is a high quality custom cut rifled bore. Ron Smith told me that this rifle should not have any trouble shooting 1/2 or less. But that will happen only with a tight lock up, as I have found out.

As I have also pointed out my gap was only 0.003. The dimpling alone
toke up the gap. Of course the raised craters would flatten out without the Devcon Steel Putty.

218 Bee don't ask just try it and find out, nothing to loose. I think 0.007 gap is doable with Devcon Steel. In my opinion the Handi takes a lot of work if you want lasting and consistent accuracy.

If you worry about the price of the Devcon steel, there are quite a few other jobs you can do with it. Like a forearm screw pillar, action beddding, new thread for sling swivel screws etc.

I am thinking of turning the 223Ultra into a real tack driving varmint rig.
That is with an outdated BR cartridge a 6x47 based on the 222Rem Mag.
Using a 1-14" twist with 55gr Nosler BT bullets at 3550 ft.around 59Kpsi.

[quickdtoo]

I agree, Fred!!! I like the barrel to open with some resistance, I've been placing a .004" aluminum shim between the forend and spacer to tighten those that are loose. Every barrel I've done this to has responded with better accuracy. One of em even took 2 shims, it was so loose. The nice thing about the shim is it can be removed if another barrel on that frame doesn't need it. The spacers vary in thickness also, I think that's how the factory gets em fitted a little tighter. As the spacer wears, a shim or Devcon on a dedicated forend, would restore the tight fit.

[218Bee]

Thanks Fred, you've stiffened my resolve :-D  
 
http://www.superkleendirect.com/index.asp?PageAction=VIEWPROD&ProdID=71
 
Just ordered some. Great writeup on your page Fred! After all the sanding w/crocus clothe the ejector needs a good cleaning anyways.
 
My only question would be about the primer. Is there another method or material I could use to prime the surface? The 51-Cure and West System searches on Google turn up marine epoxies and are kind of pricey. Can you think of an acceptable substitute?
 
Rick

[tanoose]

I had my dads 12 ga. NEF out a couple of weeks ago and noticed the side to side play when you opened the action. This gun doesn't get much use , I was going to send it to nef foe repair but before doing so i found an extra forend in the closet put it on and now theres no play at all . I can only guess the original  forend some how warped or maybe it was dropped  Has anyone had this same experience

[Fred M]

218Bee.

I don't know of any other epoxy that is as good, the fast setting stuff is to thick and would not get into the small steel pores. Besides you don't want it to mix with the Steel putty, only to bond to it. It also has about the same setting time.

I have the one liter unit and used it for building a light weight BR stock and it toke a lot of searching to find. Check with these guys and see if there is a small unit. Or try Devcon and tell them what you want they may have some stuff.

One thing you could try, is to rub a small amount of mixed Devcon Putty vigorously into the steel dimples with a piece of  3/8" of round steel clean and free of oil, don't use wood for this, then apply the Putty that has set for an hour. This may work well since the Devcon Putty is in constant compression. Try to keep solvents away from the applied putty.

Check this out for a small repair kit by System West.

http://www.jamestowndistributors.com/find.jsp?a=1&ID=,Epoxy...Adhesives,WEST.System.Epoxy,WEST.System.Repair.Packs

[218Bee]

Outstanding Fred. That will do the trick, nicely.

At $9.38 for the small kit that looks like enough to do several barrels.

I found the Devcon putty on eBay for $17.95 shipped.

I'll keep you posted.

Rick

[Fred M]

218Bee.

Just find out it is the 1 to 5 mix. The amount you need is so small it will do
more rifles than you will ever own. A little on a q-tip or a small artist brush will do it. The smallest amount you ca dispense is 5 drops of one and 1 drop of the other.

Let us know how it works for you. Set the rifle away for a week without the forearm before shooting it.