|
Post by warhwkbb on Sept 7, 2012 13:00:11 GMT -5
I just picked up 200 pieces of 401 Brass from Buffalo Arms. They are reformed from PPU 7.62x39. They were $1 each in bulk. I also picked up some 250g jacketed bullets made by Hawk. Buffalo Arms says the supply of 401 brass is "ample". I have not used the cases yet, as my shell holder for 401 does not work well with the 7.62x39. I have the proper shell holder on order. For those that load the 401sl, do you have any Jacketed Bullet data you could share? I have been using 27g 4227 for the 200g jacketed bullets. The only data I have for 250g bullets is a max load of 27.5g over Dupont 4227. (yeah, I didn't know dupont ever made 4227) Attachments:
|
|
|
Post by hovercat on Sept 7, 2012 22:35:12 GMT -5
Lyman has a listing for the 200gr jacketed.
Unique start 13.0gr @ 1597fps Max 15.2gr @ 1611fps
2400 Start 22gr @ 1718fps Max 24.7gr@ 1915fps
This is an old manual, and I have heard rumors that 2400 is more powerful now. There were no loads listed for a 250gr jacketed bullet. Also no pressures listed. Good luck in your load development/guessing, keep us informed.
|
|
|
Post by warhwkbb on Sept 11, 2012 8:08:21 GMT -5
Hovercat, I appreciate your response. Unique may be a good plinker load. I had not seen that listing before. I think I will be safe with around 24.5 g of 4227 for the 250g loads. Hodgdon claims current IMR4227 powder to be the same as it ever was. Even so, some older loads seem, well, rather hot! Blowback rifles like the 1905-1910 rifles actually will not eject if a load is too hot for the action. So there is a margin of safety, but only within a narrow range of pressure.
I believe that 2400 is a touch too fast for full-power loads in my 1910. I used 24.5g of 2400 with the 200g Hawk bullets and found the brass beat up worse than with 27g of 4227, so I think 4227 is it; at least until someone can convince me there is something better.
|
|
|
Post by warhwkbb on Oct 7, 2012 13:28:10 GMT -5
I loaded the Buffalo Arms 401 brass with 24.5g of IMR 4227 with the Hawk 250jsp. Function was perfect. Examining the primers showed I was nearing full pressure. My cases got slightly dinged up, but not unusable, so the next batch I will drop down to 24g 4227. Attachments:
|
|
|
Post by ndcasla on Oct 11, 2012 15:45:40 GMT -5
I got tired of buying brass, so I built an expander plug that takes the 7.62x39 case and reformes it nicely into .401 brass. you need to some lath work on the extractor groove, but they work great. I also cast my bullets using a lyman 240 gr. .406"dia. mold #2660199. I load that with 25gr of IMR 4227.
|
|
|
Post by warhwkbb on Oct 24, 2012 11:26:04 GMT -5
ndcasla,
I was under the impression that the extractor groove of 7.62x39 was compatible with the 401Win w/o any machining. If that is not the case,(PUN intended) considering I don't have access to a lathe, the Buffalo Arms 401 brass at $1 each still seems like a good deal.
|
|