Reboring from .177 to .22

[tckhan]

Just some wild idea, but is it possible to do, on one of these $99  440s.  I have no idea if the overall barrell is smaller on the .177 vs the now unavailible .22     Also are the dimensions of a bore on a powder gun, the same as on an airrifle?

http://www.deltagunshop.com/Clearwater/CW_services.html

Tony

[Big_Bill]

Hello John,

From all I have read, airgun barrels are softer than powder burner barrels, this may add to the cost of re-boring, if it can be done ! and then there is the crowning and chamber fees.

Now you can buy barrels in other calibers for air guns, I have read that James Maccari had some for sale, but I can't remember what calibres. And Rich in Mich has .20 caliber air gun barrels, for the CFX or Shadow/Hunter Series for $75.00. I don't know if CharlieDaTuna does this type of work, drop him an e-mail and see. I would rather have it done properly the first time, than need to send it out after I messed up.

I believe Gamo sells replacment barrels, and we know Crosman does.

Hope this helps some.

Bill

[Splash]

It would be cheaper and probably better to rebarrel, instead of rebore. I beleive the bore dia are diff also,.

Mike

[D Miller]

Not likely! To rebore a barrel would be extremely costly and the diameter is definetly different than rimfires. Gamo does not sale barrels and by just removing the barrel you would void your warranty. Besides sights, stocks and trigger guards Gamo does not supply nor endorses modifications of any kind. No offense but a 440 in .22 just wouldn't be worth the effort or costs. Buy a Crosman Quest .22 for $115 and get a tune kit and trigger mod. All under $200 shipped to you. Hope that helps!

[tckhan]

Thanks for the reality check,  I admit I really enjoy this 440, and with them being $99 now,  thought maybe it would be a way of getting one in .22    I can see that the Crossman Quest idea is the most realistic way to gp/

Tony

[vinceb]

I actually bought a used .22 Gamo barrel and installed in on a Walmart-closeout Shadow. it shot well enough, but for some reason it never measured up (power-wise) to what I could get out of a Quest in .22

I also looked into installing barrel liners, and found out that it is quite possible to drill out the barrel and use a liner to change the caliber. The barrel insert out of a Daisy 622 would work for a .22 liner, and the insert for a Crosman 1077 works for .177.

THE BIG TRICK is to bore a larger hole all the way through, and to do it straight! If one has the equipment to do that, it's a straightforward job as the barrel alloy is easy to drill.

I tried to make a long drill bit by welding some rod stock to a standard bit. That was a disaster.