Novel Way To Mount Barreled Action In Big Gun

[jackieschmidt]

A while back, I was thinking about how we mount barrels actions on our Rail Guns. Laying in bed one night an idea just came to me. I literally got up, got a pencil and paper and sketched something so I would remember it the next morning.

What I came up with, in truth, is a humongous recoil lug that bolts to the top of the Rail Gun and allowed a stress free method of mounting the barreled action.

It worked great. My rail never shot better.

My good friend Ed Bernabeo suggested that I try the same thing on a big Bag Gun. He had a big stock, a new 1-71/2 twist Krieger 6mm blank, and a Bat SV action.

This is what we came up with. I machined the barrel block, (aka humongous recoil lug), out of a piece of 17-4 H1150, machined the barrel to fit and chambered it in 6BRA. I machine the stock out to position the mounting block correctly. All that is left is to bed the bottom and back end of the block and add one more mounting bolt.

If this works as well as it did on my Rail Gun, we might be on to something. The whole idea is to mount the barreled action in as stress free manner as possible.

 

[PigButtons]

So is the connection press fit or slip fit? and what are the ID and OD dimensions?

 

[jackieschmidt]

Here is my Rail Gun and it’s mount

 

[jackieschmidt]

So is the connection press fit or slip fit? and what are the ID and OD dimensions?

Think “recoil Lug”

The straight fit has .0005 clearance in the block. It is sandwiched between the barrel shoulder and the action face. It is torqued just the same as a barrel and any other recoil lug. The barrel and action are free floating.

The block is machined all on one setup so everything so every thing runs dead true.

I included the sketch for the one on my Rail Gun.

 

[AllenOne1]

So you are going to bolt down your recoil lug will you still bolt down and bed the action or just mount bottom metal for the trigger guard and free float the action? Assuming you are only looking at a single shot action at this point.

 

[jackieschmidt]

Thi

So you are going to bolt down your recoil lug will you still bolt down and bed the action or just mount bottom metal for the trigger guard and free float the action? Assuming you are only looking at a single shot action at this point.

This is a single shot Benchrest Rifle.

The recoil block bolts to the stock. The action and barrel are free floating. There will be a simple trigger guard on the bottom.

 

[PigButtons]

Amazing. Thanks for the info. That is very unique and I hope you'll share the results.

Can you share the link to your thread on benchrest on your rail gun. I tried searching over there but no joy, (they use google search and it is the entire web that gets returned).

 

[Alex Wheeler]

I like this....

 

[jackieschmidt]

Amazing. Thanks for the info. That is very unique and I hope you'll share the results.

Can you share the link to your thread on benchrest on your rail gun. I tried searching over there but no joy, (they use google search and it is the entire web that gets returned).

here is the complete thread from building to testing.

http://benchrest.com/showthread.php...light=New+method+for+mounting+rail+gun+barrel

 

[B Nettesheim]

Interesting!
Way to think out of the box

 

[sdean]

Thi


This is a single shot Benchrest Rifle.

The recoil block bolts to the stock. The action and barrel are free floating. There will be a simple trigger guard on the bottom.

How many mounting bolts will there be? Neat idea!!

 

[PigButtons]

Thanks for the link, great read. I'll keep an eye on it to see if you continue to shoot bug holes.

 

[Dusty Stevens]

Great job as always jackie. You are one of the great innovators and i like how youre not scared to dive on in and shake it up.

 

[liljoe]

The clamping is similar to the muffler clamp guns that A Scoville and Scarbrough did a few years ago.
Larry Scharnhorst has some of these.

Joe

 

[jdh47]

It's a novel approach.

 

[Fuj]

Laying in bed one night an idea just came to me. I literally got up, got a pencil and paper and sketched something so I would remember it the next morning.

We must be related !! LOL Some of my best engineering is from
a nightmare that woke me up. Pen and pad, .45 acp, and a bottle
of Rolaids is always by the night stand.....LOL As a retired tool
maker and fabricator, projects that drift down it's own path is always
of interest. One of these days I may build a rail gun. I think the stock
will be an actual railroad rail. Need a few more nightmare's on that one !!

 

[jackieschmidt]

The clamping is similar to the muffler clamp guns that A Scoville and Scarbrough did a few years ago.
Larry Scharnhorst has some of these.

Joe

With the exception that this exerts no radial Clamping force on the barrel. That is the whole idea.

Great job as always jackie. You are one of the great innovators and i like how youre not scared to dive on in and shake it up.

Dusty, I think this will work great on the big aluminum stock heavy guns that incorporate a clamp style barrel block. This idea eliminates any radial stress on the barrel, which any Rail Gun Shooter will tell you is source of aggravation.

Where this concept differed from the “muffler clamps alluded to in another post is there is zero chance of barrel deflection or other problems related to securing the barrel radially.

And then, I might have come up with a very novel solution to a non existent problem. I have a closet full of those.
You never know until you actually build it and try it.

 

[jelenko]

The barrel still screws onto the action?

 

[Dusty Stevens]

With the exception that this exerts no radial Clamping force on the barrel. That is the whole idea.


Dusty, I think this will work great on the big aluminum stock heavy guns that incorporate a clamp style barrel block. This idea eliminates any radial stress on the barrel, which any Rail Gun Shooter will tell you is source of aggravation.

Where this concept differed from the “muffler clamps alluded to in another post is there is zero chance of barrel deflection or other problems related to securing the barrel radially.

And then, I might have come up with a very novel solution to a non existent problem. I have a closet full of those.
You never know until you actually build it and try it.

I changed my rail gun to a uhmw sleeve instead of a v block. It shot better at any torque. Wheres the stingray?

 

[pertnear]

The shooters on this forum just continue to amaze me - very ingenious!!