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This is a question for Marshall as well all you good folks. I have reviewed the loads on LoadSwap for the triple 4 and specifically Marshall's loads for the BTB 280 WFNGC and 290 LFNGC. I am relatively new to reloading, I have only loaded Hornady's 265 JFP for the beast using H335, H322 and RL7. Following Hodgdon's manual I have worked the load up to 47 grains of RL7 using WLRP with Remington brass.

My question is this...given that one usually reduces powder with a heavier bullet and the fact that 53grains of RL7 is obviously a stout load, what is a safe starting point for the BTB 290 LFNGC with RL7 and above components? I know one should reduce by 10% and work up but that still leaves you with a starting load of 47+ grains. By the way the rifle is a Winchester 94BB traditional with a 20" barrel.
 

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I would start the 290LFNGC with 45grains of Reloader #7 and work up from there. The Winchester will kick like _ell I would not want to go past 50gr of RL#7 with that rifle. I have worked up to 54Grains of RL#7 and the 290LFNGC in .432Dia in a older Marlin 444 and can tell you that I would not want to shoot'em in the Winchester.
So far in My Winchester Traditional 444 I shoot 46gr of RL#7
and the Speer 270gr Gold Dot this is it's hunting load for Whitetail it's around 2100FPS and is plesant to shoot. If I had to run the 290Gr I would keep it at 1900-2000Fps in the Winchester, when I have time I'm going to work up a load just like that for the BB444.............................Marko
 

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country_boy Like you, I started using the Hornady 265 grainers then switched to BTB 290s sized to 431 to fit my Marlin 444ss but also use it in the old Marlin 444 (micro groove). Using H322 for the 290 gr, the best load I got was 48 gr which clocked at 2051 fps. Extreme Spread was 55 fps Standard Deviation was 23.2 (if you're concerned with that sort of thing). Using RL7, my starting load was 50 gr which gave me an avg. velocity of 2210 fps and an E.S. of 19 fps Standard Deviation was 7.8 Recoil was light and accuracy was 3" from the standing postion, iron sights, at 90 yards. (which is perty good for these old eyes) My "hottest" load was 51.5 gr of RL7, it moved out at 2277 fps, was not too accurate and recoil was heavy. To sum up, I'm sticking with the 290 grain BTB's with 50 gr of RL7 and practice, practice, practice, Hope this helps.
 
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