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View Full Version : can a barrel really be "rebored" to a larger caliber?



creatinewarrior
07-19-2013, 09:27 PM
lets say someone has a .30 caliber of any kind, 30-06,308,whatever, and they want make it shoot a different cartridge, like lets say 8x57 Mauser , could the original barrel be bored out and re-rifled to 8mm and have bolt work done to shoot 8mm, or would they have to switch the barrel altogether? does that boring out only work if its to turn it into a .410 shotgun? it may seem like a weird question,but i dont know for certain the answer so i ask.id guess the barrel would have to be switched altogether, but i may find out here. thanks.

Outpost75
07-19-2013, 10:47 PM
Bore diameter of the rebore needs to be at least 0.01" larger than the groove diameter of the original barrel, to be sure to remove all imperfections and to give enough stock for the drill and reaming operations to vive an acceptable surface finish.

scb
07-20-2013, 11:18 AM
I just got a M700 Remington back from JES (http://35caliber.com/) was a 270 Win. now a 35 Whelen. It shoots better than it ever did as a .270 .

creatinewarrior
07-20-2013, 11:43 AM
I just got a M700 Remington back from JES (http://35caliber.com/) was a 270 Win. now a 35 Whelen. It shoots better than it ever did as a .270 .

wow thank you very much.i didnt realize it was that easy. as long as the action can take it,im sure they could rebore anything. thanks for the link to jes.

creatinewarrior
07-20-2013, 11:44 AM
Bore diameter of the rebore needs to be at least 0.01" larger than the groove diameter of the original barrel, to be sure to remove all imperfections and to give enough stock for the drill and reaming operations to vive an acceptable surface finish.

thanks i didnt know it was possible

TXGunNut
07-20-2013, 05:21 PM
Just got one back from JES myself, first trip to the range is tomorrow. If you have a sound barrelled action it makes more sense than a new barrel, at least to me. With many conversions the bolt and chamber need little if any work. My trusty old 30-06 is now a 35 Whelen.

creatinewarrior
07-20-2013, 09:20 PM
im calling them on Monday!

creatinewarrior
07-22-2013, 06:39 PM
im calling them on Monday!

JES wont rebore Mosin Nagants because theres too much stuff on the barrel and its too much work. Thanks for the referral, but just letting anybody else know, theyre busy so dont waste your own time or theirs.thay can do anything with a remington or winchester though.