240 Weatherby Magnum loads

[texasbilly]

I was looking for a slower burning powder for my 240 Weatherby Magnum, and I was fortunate to find a pound of Winchester 780 at my local gun shop. I started looking for recommended loading recipes for this powder, and I found nothing. What recommendations would you make for loads for Winchester 780 behind a 100 grain bullet in the 240WM?

 

[scope eye]

I don't think they even make that powder anymore, I have used it in the past and it and it is just a tad slower than 4831. So if you use that as a baseline yo will be fine, I also used it in many other applications until I started using Superformance and RL22 using the same load data. There was nothing wrong with it I just got better fps numbers and was cleaner burning, 748,760, and 780 all work fine in there range they are just old technology and dirtier burning then there modern day counterparts. Same goes for 231 for pistol and revolver.

Dean

 

[Gary in MD]

Yes, it’s very close to H4831 and you should be able to start with with similar charges.
I’ve had good luck in my 240 using H4831 but mostly use RL22. See screen shot of burn rate chart.

 

[Kurz]

.240 Weatherby Magnum - the ultimate 6mm cartridge​

"As mentioned previously, the best all around powder seems to be Reloder 22. It appears to give less pressure and be more consistent than AR2213sc. The first .240 I had, a Mark V Lightweight, showed a liking for the 100gn Hornady bullet. This rifle did its best with WMR Ball,powder, shooting tight groups with the recipe accompanied by very high velocity. WMR is no longer available, Winchester’s new Supreme 780 has relaced it, and produces practically the same results. In my F.N rifle 54gn of Supreme 780 drives the 100gn Lapua at 3350 fps compared with 3306 fps with an equivalent amount of WMR."

http://www.sportingshooter.com.au/news/240-weatherby-magnum-the-ultimate-6mm-cartridge

This is a nicely written article even with the mispellings...

I use Re-26, MRP and Ramshot Magnum under the 105gr. AMAX for Coues deer and Mule deer.

 

[Gary in MD]

I have a new barrel being installed now on my 240. I will have to try that WMR when I get it back in a couple of weeks.

 

[Frankm]

I found R26 to give me better velocity and same accuracy as my R22. Don’t shy from 7828 either.... works good in 240 b