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All Springer/NP/PCP Air Gun Discussion General => Machine Shop Talk & AG Parts Machining => Topic started by: Kragman1 on September 23, 2023, 03:59:23 PM

Title: Airgun barrel reboring...?
Post by: Kragman1 on September 23, 2023, 03:59:23 PM
I've got a 60's HW35 in .177 that needs help.
Most of it I can address myself, but the bore is "loose".

If 4.53 pellets don't get it back in the game, I'd consider going up to .20 (or even .22) but I don't know of anyone who would rebore to the right land and groove sizes.

Any suggestions?

Thanks all!
Title: Re: Airgun barrel reboring...?
Post by: Motorhead on September 23, 2023, 05:38:08 PM
Not a process you will find being done ...
If Crosman CPHP's are not large enough ?, Try some H&N 5.54 or 5.55 FTT's
Title: Re: Airgun barrel reboring...?
Post by: WobblyHand on September 23, 2023, 05:47:44 PM
Generally speaking, it's not economical to rebore and re-rifle.  It takes specialized gun drills, oil pumps (for the gun drill bits), big lathes, and rifling machines.  Far cheaper to replace the barrel. 
Title: Re: Airgun barrel reboring...?
Post by: Kragman1 on September 23, 2023, 06:55:15 PM
Thanks guys.

I would definitely want to keep the original, so I'll post on the pellet exchange for some extra large sorted pellets.

Great old rifle, so I'm willing to do quite a bit to help it out.  The idea of "upgrading" to .20 was interesting too, but I'd really rather keep it a .177.
Hopefully, the right pellets will show their worth.
Title: Re: Airgun barrel reboring...?
Post by: WobblyHand on September 23, 2023, 07:29:31 PM
Thanks guys.

I would definitely want to keep the original, so I'll post on the pellet exchange for some extra large sorted pellets.

Great old rifle, so I'm willing to do quite a bit to help it out.  The idea of "upgrading" to .20 was interesting too, but I'd really rather keep it a .177.
Hopefully, the right pellets will show their worth.
What length barrel?  I found a 177 carbine length HW35 barrel in the UK.  https://www.airgunspares.com/hw35barrel177hw35barrel-177.html (https://www.airgunspares.com/hw35barrel177hw35barrel-177.html)
Yeah, it's 140 pounds, but it could work.  Maybe there's something cheaper out there?
Title: Re: Airgun barrel reboring...?
Post by: Kragman1 on September 23, 2023, 08:02:47 PM
That's interesting Bruce, and thank you.

Mine dates to '66 by serial#, not sure of there were any changes along the way...
Title: Re: Airgun barrel reboring...?
Post by: Phoebe on October 16, 2023, 09:10:14 PM
You would pay a bazillion dollars to have a shop do what you want for just one piece.