Hi
Wow.. 785 was one of the best powders I had ever found for the .270 and 7mmRemMag. While working up loads I found that when I came to max, it let me know right now..
But if you stay under that pressure level it was a marvelous powder.
If someone would like to let go of a lb. or so I would gladly take some off your hands..

Is this the same stuff as the Winchester Magnum Rifle powder?? I have a 1 lb. can of this and have yet to load for anything other than a 300 Weatherby. (BTW it shot great in the Wby) Is this powder any good in the 270 win?? 41

I have a partial 8lb. keg myself.

I like using in my 338 250 grain handloads, but I'm sure that it would work well in 7mm and 300 mag applications. The Speer #9(10?) contains 785 loading data.

W-785 is NOT WMR. H-450 is NOT W-785. H-450 is however, WMR from a different lot. All three powders have been discontinued. W-785 semed to leave a fouling in the bore of my rifle that was hard to clean out. WMR is I believe an improved form of W-785 that is a bit slower. My .270 Win. and .300 Win. mag. just simply love WMR. I haven't used WXR, nor do I plan to.
Winchester is very close mouthed about why they dropped WMR and H-450 for Hodgden. I do have a theory, and it isn't because the powder gave problems.
Paul B.

Atwar, I still have several tins (1kg) of a supply of Win 785 that I bought in about 1985. I tested it again recently in my 22/250 AI, and it was in good condition and the burning rate did not appear to have changed.

I have used it in a variety of rifles (.17/222 mag imp, 22/250AI, 220 Swift AI, 224 Clark, 25/06, 25/06 AI, and 7mm Remington Magnum) and found that it's burning rate is very close to that of H4831. Some instances my maximum loads were the same as for H4831, and others it was 0.5 grain slower, or 0.5 grains faster.

Regarding the 7mm Remington Magnum
Hodgdon Powder Co manual no 25 lists
115 - 120 grain Bullets
starting load 67.0 grains 785 - 3,210 fps
Maximum load 69.0 grains 785 - 3,288 fps

145-150 grain bullets
starting load 62.0 grains 785 - 2,880 fps
Max load 64.0 grains 785 - 2959 fps

154 - 162 grain bullets
starting loads 61.0 grains 785 - 2,814 fps
Max load 63.0 grains 785 - 2,898 fps

Speer Reloading Manual No 10 lists the following
145 grain bullets
starting load 62.0 grains 785 - 2903 fps
Max load 66.0 grains 785 - 3,071 fps

160 grain Grand Slam
starting load 60.0 grains 785 - 2,737 fps
Max load 64.0 grains 785 - 2,939 fps

My chronograph data in my Rem 700 Classic in 7mm Rem Mag using Remington cases, Federal 215 primer used considerably more powder than listed in the manuals to get to maximum pressure and
120 grain Nosler BT
72.5 grains 785 - 3,325 fps (Max)

70.5 grains IMR 4831 - 3,335 fps (Max)
73.0 grains H4831 - 3,319 fps (Max)
74.0 grains IMR 7828 - 3,351 fps (Max

Nosler 140 grain BT
67.0 grains W785 - 3,033 fps
68.0 grains W785 - 3,097 fps
69.0 grains W785 - 3,166 fps (max) Loading density 83%

67.0 grains IMR 4381 - 3,156 fps (Max)
70.0 grains IMR 7828 - 3,144 fps (Max)

Sierra 175 grain BT
63.0 grains W785 - 2,749 fps
64.0 grains W785 - 2,781 fps
64.5 grains W785 - 2,850 fps (Max)

65.0 grains H4831- 2,799 fps (Max)
67.0 grains IMR 7828 - 2,883 fps (Max)
78.0 grains H870 - 2,977 fps (Max)

I believe that while it is ok to use WIN 785 in the 7mm Remington Magnum, I do not believe that it is ideal for use in this case, as there is excessive air space at maximum pressure, and a loading density of about 83% with the 140 grrain bullet. Powders such as Reloader 25, H1000, Viht N170 in my opinion are better options. Good luck, Brian.