Savage model 340 .222 to .223
Posted 09 October 2011 - 03:25 AM
I picked up a Savage model 340 bolt action rifle in the .222 cal. at an auction this weekend. If I understand this correctly, to convert it to a .223 calibur all that is needed is to ream the chamber a little with a .223 finishing reamer for proper head space. Is this right? I have a .223 chamber finishing reamer already and several thousand rounds of .223 for my AR-15 on hand sooooooooo.
Posted 09 October 2011 - 08:11 PM
My only similar experience was with my Remington XP100. It was built as a shortened version of the .222 when I bought it - the .221 Fireball. That lasted about week and I zipped it out to .223 Remington. It has fired mostly military stuff since and the accuracy is inspiring, 5 shots in a coffee cup at 200yards.
The only drawback is that the muzzle blast is INCREDIBLE (but fun). Everyone has a good first shot, the weak at heart have a little more trouble with the second.
Posted 23 January 2012 - 05:43 AM
Would this work?
Remove all three 2s by cutting a shallow key way in the barrel.
Prepare a blank the same diameter as the barrel long enough to fit in the lathe.
Cut a key way in the blank the same depth as in the barrel but a little longer so you can pry the new key out.
Prepare a key to fit in the barrel length ways only. No grinding or filing on the barrel. It must be higher than the barrel enough to grip with a pliers to pull it out.
Secure the key in the blank and turn to size on the lathe. Grind and file but do not over cut.
Pry the key out of the blank.
Clean the key.
Secure the key to the barrel.
Stamp new numbers.
It should look like a name plate.
Posted 23 January 2012 - 05:00 PM
Posted 23 January 2012 - 05:14 PM
This can be avoided by Post Weld heat treating at a relatively low temperature. If the barrel is heated to 500 to 700F and held for a hour or so the Martensite will be Tempered, the hardness knocked down to 30 to 35 Rc and the elongation pushed back up to 12-18%.
This is part of my daytime job.
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