I Finished The New Barrel Block For My Rail Gun.

[jackieschmidt]

I machined the ID of the bushings to the exact size of the barrel, and the OD to the bushing to the exact size of the barrel block‘s bore.

That is another reason I took a light cut over the barrel’s OD, to insure it was truly straight.

Barrel Blocks with non-metallic isolator bushings a common in Rail Guns now, but I really do not know how others are fitting theirs. The way I did it just seems logical from a machinist viewpoint.

 

[Dusty Stevens]

I machined the ID of the bushings to the exact size of the barrel, and the OD to the bushing to the exact size of the barrel block‘s bore.

That is another reason I took a light cut over the barrel’s OD, to insure it was truly straight.

Barrel Blocks with non-metallic isolator bushings a common in Rail Guns now, but I really do not know how others are fitting theirs. The way I did it just seems logical from a machinist viewpoint.

They are fit on the id and od then split. Thats the delrin or uhmw ones

 

[Infrequent Shooter]

I finally finished a project I has been in planning for some time. A new barrel block with non metallic bushings to isolate the barrel from the metal.

I had a proven barrel laying around, so I cut it off on both ends for a new crown and tenon. It is a rather old 13.5 twist Krieger chambered in .269 neck 6PPC with a .055 freebore.

I took a light cut on the OD of the barrel to get it dead true with the ID. The barrel block bore is 1 3/4. I made the bushings from CIP, a woven material that we use to make rudder and steering linkage bushings for Push boats.

After settling on 60 inch pounds of torque on the bolts, and doing a little tuning, I shot these three groups. The load is 30.4 grns of N133 behind my own 68 grn flatbase bullet.

I really wanted to go to the NBRSA Nationals in Saint Louis this year, but they are just a week after my eye surgery.

Here are some pictures.View attachment 1367431View attachment 1367432View attachment 1367433View attachment 1367434

What action and model is that pls?

 

[Dusty Stevens]

What action and model is that pls?

Bat neuvo

 

[Shooter13]

Looks like hes using butchs and a bronze brush to stay on top of his cleaning.

Naw, he just put that up there to fool ya!