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I have a couple loads, that I had tested by Tom Armbrust.
New 2-1/2" Cheddite hull. Can be purchased from Graff's and sons. It comes primed with Cheddite primer, but you can use Win. 209 after. 20 grains International Clays GU-1222 wad. can also get from Graff's. 1 oz. lead shot 1200 FPS @ 6800 PSI If you adjust your reloader correctly, you'll get perfect crimps, with either 6 or 8 point crimp. You can also use: 21 grains of IMR-PB for 1125 FPS @ 6000 PSI 22 grains of IMR-PB for 1225 FPS @ 7200 PSI These loads were also tested. Regards, Dave If your loading 2-3/4" hulls, you can use the same load data listed above, except use the GU-1225 wad. Pressure and velocity will be the same. |
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