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I wrote up a couple of replies in Big Game reloading, here's my last: BTW< this shoots flat enough for me and my deer hunting.


After combing manuals, magazines and google searches I decided not to decrease those 200 grain Sierra loads with IMR4198, I do not understand how Ken Waters got 200 fps slower with the same model rifle though.

I read on another blog shooters using 1680, Two of them claimed that the Accurate manual went to 40 grains behind the 200 grain Sierra. I went to the Accurate manual on-line and the manual did not have any loads for the 375 Win. They must of had an older manual.

I took the rifle out with 39 grains behind the 200 grain Sierra bullet. The accuracy was there - about 2 MOA at 85 yards with iron sights and old eyes.

The velocity:
2352 fps
2401 fps
2355 fps
2374 fps
2376 fps

average 2371.6 fps - if corrected for chronograph 10' ahead of bench - 2411.6 fps (If it loses 200 fps in the first 50 yard, then maybe it lost ~ 40 fps in 10 yards.)

This is a bit faster than I expected. The accuracy is there.

The drop, velocity and energy according to the Application "Shooter"
distance POI Velocity Energy
50 yards= 2.1" 2,209 fps 2,167 ft-lb
100 yards= 3.1" 2,022 fps 1,815 ft-lb
150 yards= 2.0" 1,855 fps 1,528 ft-lb
200 yards= -1.6" 1,700 fps 1,284 ft-lb
250 yards = -8.2" 1,566 fps 1,088 ft-lb

I have quite a bit of 1680 on hand for the 17 Hornet, so I will probably use this load for my 200 grain Jacketed load.

For deer sized game the 200 Sierra would be hard to beat. Seems like we are all having good luck with 1680 and this bullet.

Anybody try 1680 with the 255gr Barnes? I'm loading for son in law's new production 38-55.

I haven't, but would like to know which one you're using: .375" or .377"?

Thank you.

I have had such good luck with RL 7 with the heavier bullets that I haven't tried.

North61, that's all I've ever used also, was just curious, thanks.