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Discussion Starter #1
Well I tried some 1680 under Barnes 220gr flat points for velocity out of my 20" M-94 BB XTR yesterday. I loaded 36, 37 and 38.5 grns. Here is what I got. 36gr = 2123fps, 2113, and 2143. With 37gr I got 2123,2133 and 2143fps. That was a pretty consistant load I thought. 38.5 gr gave 2175,2185 and 2218fps the Av. was 2182 for that load. The number were just what I expected from the loading manual which used a 24" barrel. So if I can devlope an accurate load at 2200fps I think I will be happy. I had hoped for more, but out of a 20" barrel I just am not sure. Is anyone doing better?
 

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Sir,

I am almost positive I have seen manual loadings for 1680 and the 255. I don't remember if its from the Barnes manual, or the accuratte, though.

I'm away from the house for the rest of this week and next, but I'll give it a check right after I get back. Not a whole lot of time with accurate powders, none of my local guys stock it, but I figure folks that think 375 win, would also think 1680.

Good luck,

Steve
 

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Cub-

I'm away from my reloading manuals right now; but, I think that the Accurate Arms manual lists loads for a 250 grn cast lead bullet. You might check there as it would at least provide a starting load that you could work up from.

Marshall also posted some 250 grn loads here in the past and you might find them on a search.

Hope this helps,:)
 

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Discussion Starter #5
Actually Barnes and accurate don't have any loads for the 255 gr Barnes and 1680 combo. :(
 

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FA18CUB,
I don't know if they can help you, but they have been of great service to me on several occasions. Call or email the tech guys at Hodgdon and see what they have to say about H4227 or Lil'Gun in the .375. I've had better results with H4227 than 1680 in the .357 Max as of late and Lil'Gun is starting to work it's way into most of my straight wall case loads. The .357 Max uses similar powders to the round you're using, and these powders may provide to be very suitable. It'll only cost you an email and you may get a lot of information. If you can call them during business hours, it would probably be better, as they have lots of info.
 

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Discussion Starter #7
That's an interesting suggestion. I am using 1680 because of Marshalls suggestions. 1680 produces very low pressures and high velocities in this round. I will call about the other powders. Thanks.
 

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Discussion Starter #8
Good news from Hornady. In their new manual they list loads with 1680. 41+ gr of 1680 for 2300fps.
 

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Discussion Starter #9
Just got my reply from Accurate Powders on the 1680 + 255 gr Barnes combo. They say that 35 or so grains of 1680 should give 2100 - 2150 fps from a 20" barrel!!! That sounds good to me. Now I just need to go load some up and put it over the chrono.
 

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Cub-

Just curious. Have you had a chance to try that 35 grn load of AA-1680 with the Barnes 255 grn F/P yet?
 

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FA18CUB said:
Just got my reply from Accurate Powders on the 1680 + 255 gr Barnes combo. They say that 35 or so grains of 1680 should give 2100 - 2150 fps from a 20" barrel!!! That sounds good to me. Now I just need to go load some up and put it over the chrono.
.

FA18CUB,

Are you loading the .375" or the .377" Barnes Original 255 grain bullet in your .375 Winchester?

I have a box of .377" that I bought to load in a Marlin 336CB Cowboy in 38-55 and would like to try them in my Marlin .375. It has micro-groove rifling and the groove diameter is .376".

Anyone forsee any problems in using the .377" bullet in a Marlin 375 or a Win BB94 375?

Thanks,

JJ
 
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