Rail Gun question

[Larry Koch]

I have this old rail gun. Don’t know much about it. See pic. Going to bring it back to life. My question is should I just bolt the barrel directly between aluminum blocks or make a delrin sleeve ??.. Oh barrel will be threaded and crown tonight big match next weekend so.

What say you.

Thx

 

[DaveTooley]

Depends on how it fits in the block. Is the block round or is it a V-block.

 

[Larry Koch]

V on the bottom flat on top.

 

[DaveTooley]

Clamp on the barrel. Many are shot that way.
I'd make a thin split sleeve of a thermal stable material that doesn't cold form and turn a section of the barrel to match but that's just me.

 

[Larry Koch]

Clamp on the barrel. Many are shot that way.
I'd make a thin split sleeve of a thermal stable material that doesn't cold form and turn a section of the barrel to match but that's just me.

You would reduce the diameter of the barrel and sleeve it at the clamp area?
Im using a1.25“ barrel, it was suggested the lighter dia. works better in there light rail guns.

 

[DaveTooley]

Turn a true concentric section on the barrel yes. w or w/o a sleeve.

 

[Larry Koch]

Thx how deep would u recommend?

 

[DaveTooley]

just enough to clean it up

 

[Larry Koch]

Order some Delrin to make a thin sleeve. Just in case it’s needed.
Thanks for all your input. Will let you no what the target says.

 

[Larry Koch]

10 shot groups. Going to be interesting.

 

[LVLAaron]

Keep us posted.

 

[Larry Koch]

Will do. I’m getting sympathy PMs on how old it is. So Im up for any information to improve my chances.

 

[DaveTooley]

Old doesn't mean it won't shoot. Every rail has its own personality. Free recoil, lightly touch with your thumb ???. Go easy pushing it back to battery.
They're fun to shoot.
My rail is so old I use a Unertl scope and an XP-100 action.

 

[Codeman]

Just because its old doesn't mean it won't shoot!
Let her rip!

 

[Larry Koch]

Just because its old doesn't mean it won't shoot!
Let her rip!

I hope your right.

 

[Larry Koch]

Took it to the range Monday morning. Got it all setup. Shot a few rounds and had it zeroed on paper.
Wind was 5 to 15 mph already at 8am. picked another dot on the carboard target and fired some old ammo from our monthly match. 7 shots measured .22 inches. Most when into one little hole and there was a flyer to the left. Which I belive was a bad wind call. 100 yards. Packed up, and now getting ready for the first UL match.

 

[Larry Koch]

Thx, Dave for all your help.

 

[Larry Koch]

Okay it shoots. Now it will need many small improvements too shoot better. 10 shot groups.