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Our Annual server fund drive is going on now! This donation drive helps fund Cast Boolits for an entire year, and helps support our 2nd amendment rights! You can donate by Paypal by clicking the DONATE button. Or by Cash / Check / MO to the address below:

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Thread: Paper patching to improve a bore

  1. #21
    Boolit Master
    Join Date
    Jul 2009
    Location
    Central Texas
    Posts
    573
    Quote Originally Posted by kbstenberg View Post
    I know every barrel is different. In generalities how much is the barrel dia. enlarged by lapping?
    I work in the machining trade and we occasionally have to pickle rusty items. On very light surface rust, you lose tenths but I’d figure at least .001 lost on a bad bore and it would be more on basket cases.

  2. #22
    Boolit Master
    Join Date
    Apr 2009
    Location
    northern Minn. in the boonies
    Posts
    2,160
    Thank you HW

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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