WB
It's basically a 25 gr. vs 40 gr. capacity
Friday, January 26, 2018, 15:52

I find I can get by with about 60 gr. of burn in a 12-14" handgun barrel. Some slow powders actually still give faster speeds. Adding bullet weight does improve efficiency some, within reason.

My .375 Win. FA2008 would only do about 2000 fps with the 15" and a 230 gr. JSP. That's what I took to AK. A cast bullet would do more, and the .400's straight sides holds notably more powder. I re-chambered the FA to .378 GNR and burn that 60 gr. to push a 260 gr. Nosler at 2300+, with a shortened 12"+2" brake, current barrel.

Not that it helps but you should be able to shoot .401 Herter's through the .400 GNR. LOL The only difference other than length is a little bit of rim diameter, 0.475" vs 0.495".


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