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Thread: 256 Newton headspace gauges

  1. #1
    Boolit Buddy
    Join Date
    Jan 2009
    Goffstown, NH

    256 Newton headspace gauges

    Hello All: I've got to check the headspace on a 256 Newton. Will someone please suggest the best source for renting these gauges? Thanks, Dan

  2. #2
    Boolit Master
    Join Date
    Feb 2011
    SE Kentucky
    Unless someone is making ammo for it again (US production stopped before WWII) headspace is not an issue. You are going to have to form the cases and can form them to conform to the rifle as opposed to the rifle conforming to the case. Staret with the die backed out and adjust the die down to form the case so the bolt closes on it and then put a piece of electrical tape on the case head and see if there is any resistance when closing the bolt. If yes you should be around .007 clearance or slightly less (measure tape thickness as it can vary). If no resistance turn the die in until you can feel the bolt compressing the tape. Not super scientific but works.

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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