This will probably be a beginner question to most, and I am a beginner in the more advanced aspects of gun smithing. I’ve got a .308 win Weatherby Vanguard I’m looking at building into a lightweight 6.5 PRC. Is it possibly to turn my non magnum bolt face into a magnum bolt face? I’m having trouble finding a new bolt for sale. Thanks for any help!
Gunsmithing 308 bolt face machining
- Thread starter San Juan Precision
- Start date
Your going to find that your biggest problem to solve is the position of the extractor. As case diameter changes, the location for the claw must move accordingly. Things like rim purchase and shell pressure are what your setting with this.
Bolts with T slot extractors and/or the lever type buried into the lug/face (Push feed Winchesters, Savage stuff, etc) are tough to do anything with because the machine work is a bell you really can't "unring." The pin location on an M16 is also something to solve depending on how the lead chamfer edge is done on the extractor.
Know also that as case head dia grows, the range the extractor must move grows as well, so if the breech ring clears, then suddenly causes a problem, don't be surprised. You'll have to enlarge it as well. A very common thing overlook when fitting up sticks.
For instance:
A .480 case head vs a .545 case head. The extractor moves outward roughly .03" to maintain the relationship. You can fudge that to some degree by altering the "pad" height ahead of the extractor pin, but the pin location has to move as well in most instances.
Anything is possible I guess, but you have some work to get there.
Good luck.
Bolts with T slot extractors and/or the lever type buried into the lug/face (Push feed Winchesters, Savage stuff, etc) are tough to do anything with because the machine work is a bell you really can't "unring." The pin location on an M16 is also something to solve depending on how the lead chamfer edge is done on the extractor.
Know also that as case head dia grows, the range the extractor must move grows as well, so if the breech ring clears, then suddenly causes a problem, don't be surprised. You'll have to enlarge it as well. A very common thing overlook when fitting up sticks.
For instance:
A .480 case head vs a .545 case head. The extractor moves outward roughly .03" to maintain the relationship. You can fudge that to some degree by altering the "pad" height ahead of the extractor pin, but the pin location has to move as well in most instances.
Anything is possible I guess, but you have some work to get there.
Good luck.
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