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Thread: gas checks

  1. 05-24-2015, 01:53 PM #1
    cptjack
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    gas checks

    does a gas checked bullet need to be .002 over bore dia ? CJ
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  2. 05-24-2015, 02:04 PM #2
    Echo
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    Professor Gun will tell you - but at least .001, anyway. I'm not an expert re GC's, so I use the general case...
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  3. 05-24-2015, 02:13 PM #3
    JWFilips
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    Well It depends on your bore size . My 8mm GEW98 likes .003" over bore with gas check.
    My .243 win Ruger 77V like them .002" over bore with gas checks I Don't use gas checks on any of my pistols however. But boolits are still at least .002 over bore
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  4. 05-24-2015, 02:30 PM #4
    44man
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    What your gun needs for groove, NOT BORE. .001 or .002 does not matter. The GC only stops skid at the base. It should be the same size as the boolit.
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  5. 05-24-2015, 03:01 PM #5
    williamwaco
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    Quote Originally Posted by JWFilips View Post
    Well It depends on your bore size . My 8mm GEW98 likes .003" over bore with gas check.
    My .243 win Ruger 77V like them .002" over bore with gas checks I Don't use gas checks on any of my pistols however. But boolits are still at least .002 over bore
    ditto. .002 to .003.
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  6. 05-24-2015, 04:42 PM #6
    JWFilips
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    Sorry.. Stupid mistake..... I got the terminology incorrect...Yes it is groove diameter. Thanks 44man
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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