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General >> Older threads >> Recommendatons for reloading 180 grain sp for Krag
http://www.kragcollectorsassociation.org/cgi-bin/yabb2/YaBB.pl?num=1320962566 Message started by Ed on Nov 10th, 2011 at 10:02pm |
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Title: Re: Recommendatons for reloading 180 grain sp for Krag Post by Parashooter on Nov 15th, 2011 at 11:22pm
Personally, I put a good bit of faith in IMR's pressure-tested data for IMR powders. This from an ancient DuPont-era booklet -
.30-40 KRAG WIN. CASE; WIN. 8 1/2-120 PR REM. 180 GR. SPCL .308" DIA.; 25.5" BBL.; 3.00" C.O.L. Powder Grains Vel. C.U.P. SR 4759 24.0 1940 39100 IMR 4227 23.0 1900 37800 IMR 4198 29.5 2150 39800 IMR 3031 38.0 2375 39300 IMR 4064 41.0 2435 39000 IMR 4895 35.5 2270 38800 IMR 4320 35.5 2210 38100 IMR 4350 46.0C 2445 38700 IMR 4831 49.0C 2425 35900 C=Compressed load Oddly enough, the same data is currently on the Hodgdon website but with a Speer bullet and longer OAL. They have, however, removed the data for 4227 and 4198 - neither of which are particularly well-suited for this application anyhow. Cartridge: 30-40 Krag Load Type: Rifle Maximum Loads Bullet Weight (Gr.) Mfg. Powder Bullet Diam. C.O.L. Grs. Vel. (ft/s) Pressure 180 GR. SPR GS SP IMR IMR 4831 .308" 3.090" 49.0C 2425 35.900 CUP 180 GR. SPR GS SP IMR IMR 4350 .308" 3.090" 46.0C 2445 38,700 CUP 180 GR. SPR GS SP IMR IMR 4320 .308" 3.090" 35.5 2210 38,100 CUP 180 GR. SPR GS SP IMR IMR 4064 .308" 3.090" 41.0 2435 39,000 CUP 180 GR. SPR GS SP IMR IMR 4895 .308" 3.090" 35.5 2270 38,800 CUP 180 GR. SPR GS SP IMR IMR 3031 .308" 3.090" 38.0 2375 39,300 CUP 180 GR. SPR GS SP IMR SR 4759 .308" 3.090" 24.0 1940 39,100 CUP If one trusts IMR data, 46 grains of 4350 shouldn't normally be an overload for these bullets in .30-40. |
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