I have just started reloading for a win 375 with 20 in barrel. I chose aa2015 powder and I can only get enough in the case to get 2100fps. Accurate reloading manual shows their 1680 powder getting 2512 from a 24 in barrel but factory winchester ammo advertises 2200 fps(unknown barrel length) so what I am wondering is if I get 1680 powder would I get enough extra velocity with good accuracy to make it worth keeping an extra powder around. I almost forgot the bullet I am using is the Sierra 200gr fp.
Reloading for win 375
- Thread starter ralph2
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NCsmitty
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That 375 Win is a good round, and I'm not where I can look at my manuals, but the reloadersnest site shows a load with A1680, using your bullet and using a 20" barrel.
You should work up from a lower charge to start as A1680 is a bit faster burning. I recommend 33gr to start and check your chronograph and it's accuracy, then work up slowly if you think it's safe.
Save your A2015 powder for the heavier bullets, if you want to go that route.
The online Accurate data does not show your caliber that I can see, so I don't know what they list as a maximum load. Just don't start with the maximum load.
http://www.reloadersnest.com/detail.asp?CaliberID=79&BulletWeight=200&LoadID=10086
NCsmitty
You should work up from a lower charge to start as A1680 is a bit faster burning. I recommend 33gr to start and check your chronograph and it's accuracy, then work up slowly if you think it's safe.
Save your A2015 powder for the heavier bullets, if you want to go that route.
The online Accurate data does not show your caliber that I can see, so I don't know what they list as a maximum load. Just don't start with the maximum load.
http://www.reloadersnest.com/detail.asp?CaliberID=79&BulletWeight=200&LoadID=10086
NCsmitty
Always good advise to work loads up from lower charge.
From Marlin 20 barrel. Win brass, Fed 210 primer, 2.520 oal.
40.0 grains 1680 for av 2366 fps, vg accuracy
Loads were taken from Accurate manual No 2, which shows 40.0 grains 1680, Rem 9 primer and Sierra bullet at 41,500 cup and 2512 fps from 24 inch barrel. Manual lists max pressure for 375 win at 52,000 cup.
Started using Lee dies , which stopped the excessive case stretching, without raising the die. 375 brass is quite thick and pia to trim.
your choice whether the extra velocity is worth it.
From Marlin 20 barrel. Win brass, Fed 210 primer, 2.520 oal.
40.0 grains 1680 for av 2366 fps, vg accuracy
Loads were taken from Accurate manual No 2, which shows 40.0 grains 1680, Rem 9 primer and Sierra bullet at 41,500 cup and 2512 fps from 24 inch barrel. Manual lists max pressure for 375 win at 52,000 cup.
Started using Lee dies , which stopped the excessive case stretching, without raising the die. 375 brass is quite thick and pia to trim.
your choice whether the extra velocity is worth it.
Kernel
Member
2512 fps? Wow! I‘m skeptical. Maybe in a Contender Carbine with a 24" barrel, a 3.00" COAL (old Contender trick, allows for more powder in the case), and pressures pushed to every last bit a Contender could safely take. Even then, 2500 fps would be an ambitious goal; IMO, not realistic in a 20” lever action.
A faster powder, like A1680, is a step in the right direction and should give you better velocity with 200 grain bullets. Working up your loads, I’d expect you to start seeing pressure signs and topping out around 2250 fps in a 20" barrel.
So, if you optimized your powder burn rate, by going with a faster powder more appropriate for your light 200 gr bullets, they you should be able to see about a 10% velocity improvement over the A2015 you’re using now. Is that worth stocking another powder?
A faster powder, like A1680, is a step in the right direction and should give you better velocity with 200 grain bullets. Working up your loads, I’d expect you to start seeing pressure signs and topping out around 2250 fps in a 20" barrel.
So, if you optimized your powder burn rate, by going with a faster powder more appropriate for your light 200 gr bullets, they you should be able to see about a 10% velocity improvement over the A2015 you’re using now. Is that worth stocking another powder?
788Ham
Member
ralph2,
I've done some reloading in this caliber for my Win. Big Bore .375, 20" barrel. I've loaded 38.0 gr. of Reloader 7 with Sierra's 200 gr. FP, @ 2200 fps. This is a good solid load, no pressure signs at all. I used REM. 9 1/2 primer, W/W virgin brass.
I've also reloaded Hornady's 220 gr. FP with RE-7 36.5 gr @ 2100 fps. Using virgin W/W brass, CCI 300 primer. This is also a good solid round. I used this load for elk hunting here in Colorado, unfortunately, never shot one with it. This load also did not exhibit any signs of pressure at all.
These loads are the only ones I've reloaded for this rifle, have shot around 100 rounds of the 220 grain bullets. I hope this helps, not trying to dissuade you in anyway of trying any other loads, or follow my loadings, just for informations sake.
Regards,
Jim
I've done some reloading in this caliber for my Win. Big Bore .375, 20" barrel. I've loaded 38.0 gr. of Reloader 7 with Sierra's 200 gr. FP, @ 2200 fps. This is a good solid load, no pressure signs at all. I used REM. 9 1/2 primer, W/W virgin brass.
I've also reloaded Hornady's 220 gr. FP with RE-7 36.5 gr @ 2100 fps. Using virgin W/W brass, CCI 300 primer. This is also a good solid round. I used this load for elk hunting here in Colorado, unfortunately, never shot one with it. This load also did not exhibit any signs of pressure at all.
These loads are the only ones I've reloaded for this rifle, have shot around 100 rounds of the 220 grain bullets. I hope this helps, not trying to dissuade you in anyway of trying any other loads, or follow my loadings, just for informations sake.
Regards,
Jim
Just got a pound of AA1680 and tried it. I used a 2.5 cc Lee dipper of it and got 2194fps. I only shot one round through the chronograph. No signs of excess pressure. Powder was near the base of the bullet I believe maybe another 100fps could be gotten with more powder. According to Accurate reloading manual 40 grains gives 41500 CUP and the 375 is supposed to be good for 52000 CUP. So I believe the limiting factor with 1680 is how much you can get in the case. I don't have much experience with compressed loads. Can you compress ball powder ? For myself I think I will just stick with a 2.5 cc dipper full
35 Whelen
Member
I have a Marlin 375, but haven't loaded for it in quite a few years. When I did, I used Re-7 and with a 220 gr. Hornady worked up to the max load that ran about 2200 fps. FWIW, I shot a couple of deer and a hog with this load/bullet and performance is incredible.
35W
35W
788Ham
Member
ralph2,
Sorry it took me awhile to get back! Your question about compressed load? NO, I personally won't load like that! I loaded some loads, took them out and shot them, wanted something a bit stouter. I won't shoot ignorant loads in my firearms, I'm reloading for accuracy. This load is a good load, it shoots hard, will knock down a deer without any problem, elk, I don't know haven't gotten that chance yet. Try 4 or 5 rounds, see if I'm wrong, bet you'll be pleased!
Let me know what you think. Don't worry about using a pound of powder, when you see how these work, a pound won't last you very long! Ha
Jim
Sorry it took me awhile to get back! Your question about compressed load? NO, I personally won't load like that! I loaded some loads, took them out and shot them, wanted something a bit stouter. I won't shoot ignorant loads in my firearms, I'm reloading for accuracy. This load is a good load, it shoots hard, will knock down a deer without any problem, elk, I don't know haven't gotten that chance yet. Try 4 or 5 rounds, see if I'm wrong, bet you'll be pleased!
Let me know what you think. Don't worry about using a pound of powder, when you see how these work, a pound won't last you very long! Ha
Jim
788Ham - Thanks for response. I am not a hunter but just a retired person with a lot of time to kill. I sorta fell into the gun. I loaned a guy $180 Xmas eve and he said if he didn't pay me back in 10 days the gun was mine. Now I have something under $300 in the gun counting dies, bullets, brass and the gun. I had been thinking of a 30-30 which would be cheaper to shoot but would have cost more for the gun. Now that I have the 375 win I think I like it better than 30-30.
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