Dusty Stevens
Shiner
But have you ever checked it with a dial indicator? Once you do youll be a believer just like other recent converts. Gotta check everything, twice.
Pros/Cons to gluing an action
- Thread starter Boisblancboy
- Start date
Aero
Gold $$ Contributor
I was also going to ask what guys were using for glue ins. I've never done a glue in, at least on purpose
I was surprised the one answer was that most use JB Weld. I use JB to bed scope bases, but generally use Marine Tex for bedding jobs. Never tried JB for bedding.
I'm curious why most are using JB for glue ins?
I was surprised the one answer was that most use JB Weld. I use JB to bed scope bases, but generally use Marine Tex for bedding jobs. Never tried JB for bedding.
I'm curious why most are using JB for glue ins?
Dusty Stevens
Shiner
Why would you think jb weld wouldnt be the best? Its a slow cure, metal based epoxy adhesive. Its got all the properties you need for permanent bonding and its machinable. It does shrink more than devcon or marine tex, but as a skim glue its better imo.
Aero
Gold $$ Contributor
Didn't say I thought JB wouldn't be the best. I don't know. I'm not a BR shooter or BR rifle builder, although most of what I use for putting other target rifles together I learned from a BR guy. Even single-shot BP rifles shooting 540 gr cast bullets to 1k or more. Just curious why JB is used by most for glue ins.
Besides, I hear about quarter minute rifles out to 1500 all day long on a regular basis, especially on the internet. Even factory rifles. Will glueing their action into their stocks with JB make them shoot groups in the negatives?
Besides, I hear about quarter minute rifles out to 1500 all day long on a regular basis, especially on the internet. Even factory rifles. Will glueing their action into their stocks with JB make them shoot groups in the negatives?
Dusty Stevens
Shiner
Only if you do your part
Brians356
Gold $$ Contributor
Because a stock is an unwanted encumbrance on a tomato stake.
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Dusty Stevens
Shiner
You can take the barrel off while in the stock too. No screw torques to worry about afterwards
It is a BR thing. 99% of rifle owners will never see, purchase or use a glue-in! In the old days freezer action was common to get them out of a stock. For anything other than serious BR it is not the best way to build or maintain a weapons system. You would definately want to has a SS action for a glue in.
Why SS in particular?
mikeeg02
Michael Glantz
I have, and I have read about others that do and their concerns with it and "bowing/bending the action" or putting stress into it so I checked a couple of my stocks and got to thinking.
Thats a bunch of hogwash if you ask me. You're telling me that your 1.355" (or larger) round action is getting bent or stressed by a piece of wood or fiberglass with a skim coat of metal epoxy thats getting screwed to it? Sorry man, not buying it. I think people have got it backwards.
Having said that, I think a good bedding job is very important. You certainly dont want it loose. But to tell me you're bending that action.
But your results may be different than mine.
Dusty Stevens
Shiner
Bending the action is not the concern at all if the bedding is good. But no bedding material is above shrinking so its going to be loose. There is nothing you can do, no matter how many screws an action has to keep it from moving.
Alex Wheeler
Site $$ Sponsor
A glued action is bonded to the stock, full contact all day every day. A bedded action has firm contact at the pillar and random, variable contact throughout the rest of the action. There are steps to minimize the shrinkage issue, but it means 2 bedding jobs and most are doing a one time bedding job which allows for different thicknesses of epoxy and different amounts of shrink. Yes an action can be flexed enough to un seat a lug or cause the bolt to drag. Do the math on how much a bolt bore has to be out of alignment on and action with .0015"-.002" total clearance around the bolt. And thats assuming its perfect to begin with, most use all of that clearance from the beginning to allow both lugs to seat.
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Since Williamsport has wormed it's way into this conversation, it would be nice to know what the folks who have accumulated (and continue to accumulate) more HOF points than most of us will ever be able to dream about (Kruchinsky, Kenzakoski, Mark King, Jay Burger, Murtiff, Kline et al) would have to say about this. . . . .
BoydAllen
Gold $$ Contributor
The importance of stress free bedding has been well established by actual testing. It is not at all controversial. The same can be said of the advantage of pillar bedding over skim bedding. There is no controversy among top smiths on either of these points.
mikeeg02
Michael Glantz
I hear this Mike Bonchack guy has racked up a bunch of those as well. Wouldn't mind his opinion.
But Kruchinsky called me a little bit ago on another subject so I asked him.
While I knew his rifles were all pillar bedded as he's shown me, I asked him. Do you ever have to re-bed those and if so why ? He told me he built those 5 identical rifles in 2012, and one needed redone recently. Not because it was loose, but because something had moved and it now put stress in the action. He said in the magnum days it just beat up the bedding and required to be redone more often. But the ppc's and dashers didnt have the same effect on it. He also said he went through the glue in "phase' of his career and all 5 of his identical rifles are properly pillar bedded.
A 1/4" screw torqued to 60 in-lbs produces more than 1000 pounds of clamping force. That is certainly enough to bend an action if support between the action screws is not uniform.
Dusty Stevens
Shiner
And with pillars exposed looking pretty it will only sit on those
mikeeg02
Michael Glantz
Now step back and think about this for a minute.
You're saying the 1.355" cylindrical, single shot action is going to bend, before the piece of wood or fiberglass with a skim coat of epoxy bedding?
Im not saying nothing is going to move, I've also experimented and measured it. But tell me the wood, or fiberglass below isnt whats moving? Come on guys.
Alex Wheeler
Site $$ Sponsor
It does not get posted here, but 1"s are not lucky groups anymore. Theres guys consistently shooting groups in the 1"s almost every test session. Im not sure guys realize how small these rifles can shoot at 1k. You can learn things from a 1" gun you cant from a 3" gun.
Dusty Stevens
Shiner
Times are a changing. Lil testing goes a long ways.
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