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Thread: hepburn receiver.

  1. #21
    Boolit Mold Steelpounder's Avatar
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    don't mind the switch at all. seeing one receiver threaded is pretty much the same as seeing another. at least in principle isn't it?

  2. #22
    Quote Originally Posted by Steelpounder View Post
    Ballistics,

    I have a 13x40 import lathe with a DRO setup. do you think this is large enough. I am thinking that the boring head in the chuck and the receiver on the cross slide sounds like the way to do this for me. this way I can face the receiver then dial in and bore the miner diameter then cut the threads with out changing the setup helping to insure alignment.
    I take it that 13in. is diameter of swing over the bed? My Myford is more usually termed a 3x31, aka 7in. (long bed and previously owned by one careful bassoon repairer.) I'd do it on that, taking progressive light cuts, so yours should be ample. You might get a little more rigidity, and thus smoothness of cut by holding the boring head in a headstock collet rather than the chuck, although being an eccentric tool you don't need the extreme concentricity collets are usually used for.

    If you do use a tap, it can be aligned by the centre hole in its rear end, in a 60 degree headstock centre, and turned with a wrench. But the amount of force necessary to turn a large tap is brutal treatment of the cross-slide. With a some actions I would have a steel bar and brass shims to hold it against the turning force of the tap. With a long, thin-sided receiver like the Martini I would make sure it is clamped at both ends, and instead of that bar, a handle integral with one of the spacer blocks which raise it to the right height.

  3. #23
    Boolit Mold Steelpounder's Avatar
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    thanks Ballistics.

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check