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<Don Martin29> |
Use 4759. The load is about 1/2 of a regular load by weight. So if the .223 holds 28 grs then 14 grs will do. I like magmun primers for these loads. Check www.imrpowder.com | ||
one of us |
I worked up some light loads with a 40 grain bullet that were still stout enough to cycle my gas automatic action. I found that 17 to 17.5 grains of IMR 4227 would generate enough pressure and yield about 3000 fps with a 40 grain ballistic tip. This may not be as light as you want, but is about as light as I could go for dependable functioning in my particular rifle. | |||
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