Rebarrel M70

Quincunx · April 14, 2013, 09:09 AM

I've always wanted a Model 70 in .300 Savage, but as a factory original such a critter would be beyond my means. Would converting a .22/250 to .300 Savage be just a straight rebarrel, given that the parent case is the same?

PetahW · April 14, 2013, 09:12 AM

Yep - but, depending upon the present bbl's muzzle OD, a rebore should suffice (much less expensive than a rebarrel).

Most reborers won't rebore a barrel to whatever ID/caliber unless the end result leaves a bbl thickness (NOT O.D.) of at least .125" @ the muzzle.

Which means that your .22/250 bbl's muzzle OD cannot be less than .550", in order to accept a rebore to .308".

.

Quincunx · April 14, 2013, 09:34 AM

I thank ye kindly!

Bart B. · April 14, 2013, 04:36 PM

Reboring a barrel to a larger caliber typically ends up with less accuracy than the original.

Custom barrels typically have an inch or two cut off their muzzle end to get rid of the poor rifling quality in that area. Chamber reamers remove the bad stuff at the breech end.

April 14, 2013, 09:09 AM	#1
Quincunx Senior Member Join Date: July 9, 2005 Location: People's Republic of Maryland Posts: 421	Rebarrel M70 I've always wanted a Model 70 in .300 Savage, but as a factory original such a critter would be beyond my means. Would converting a .22/250 to .300 Savage be just a straight rebarrel, given that the parent case is the same? __________________ A mind without instruction can no more bear fruit than can a field, however fertile, without cultivation. --- Cicero

April 14, 2013, 09:12 AM	#2
PetahW Senior Member Join Date: September 19, 2008 Posts: 4,678	Yep - but, depending upon the present bbl's muzzle OD, a rebore should suffice (much less expensive than a rebarrel). Most reborers won't rebore a barrel to whatever ID/caliber unless the end result leaves a bbl thickness (NOT O.D.) of at least .125" @ the muzzle. Which means that your .22/250 bbl's muzzle OD cannot be less than .550", in order to accept a rebore to .308". . Last edited by PetahW; April 14, 2013 at 09:18 AM.

April 14, 2013, 09:34 AM	#3
Quincunx Senior Member Join Date: July 9, 2005 Location: People's Republic of Maryland Posts: 421	I thank ye kindly! __________________ A mind without instruction can no more bear fruit than can a field, however fertile, without cultivation. --- Cicero

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April 14, 2013, 04:36 PM	#4
Bart B. Senior Member Join Date: February 15, 2009 Posts: 8,927	Reboring a barrel to a larger caliber typically ends up with less accuracy than the original. Custom barrels typically have an inch or two cut off their muzzle end to get rid of the poor rifling quality in that area. Chamber reamers remove the bad stuff at the breech end.