Home Forums Reloading Big Game Rifles 7828 Powder/.270 Weatherby

So I dropped off my Kimber .338 to get bedded and some trigger work done, and figured while that is at the smith's I could take the time to start working up a load for my .270 Weatherby. The rifle is a Mark V Synthetic rifle. Anyway- I'm finding some loads but my buddy that is showing me the ropes to reloading metallic cartridges doesn't seem to like the powders for loads I'm finding. I'm planning on loading 130-grain Nosler Ballistic Tips, and what I seem to be seeing the best velocities with is 7828 powder- my friend said he thought it was "peaky". I don't know what that means, but has anyone had any trouble loading this powder- and particularly in the .270 Weatherby? Or do you suggest any other powder/loads to try for this cartridge?

7828 is good. Start at around 70 gr or so and work your way up. If you have a 26" BBL you should get to 3400+ very easy and possibly closer to 3500 w/130's with a good behaving load. I found RL22 to be good too, not quite as fast, but close. I don't find 7828 to be peaky in my 270 wby. I push 130 SST and IB at 3450 and 140 Berger Hunting VLD to 3330. All with 7828. Pre 64 mod 70 26.5" bbl.

7828 is my starting go to powder in 257 270 300 and 340 Weatherby. I think I read somewhere that 7828 was pretty much designed with the Weatherby case in mind way back when Roy was hard at work.

I've been working on loads with a 270 Wby & 140 gr Accubonds. I am getting the velocity but not the accuracy. I plan to move on to try Reloder 23 & VV 550 next.

Dufur 7828 was developed for the Rem 7 mag. Even though the powder was not available until years after the 7 mag, the handloaders back then could not equal factory loads...so the story goes. 7828 is the only powder I need for 340 WBY, sending 250 grs at 2950 fps!
JUSTIN... A guess is if it is suitable for the 7 Rem mag then it should be so for the similar 270 WBY especially with a factory freebored barrel.
Best Wishes, Bill

My 270Wby has never had another kind of powder down the barrel, feom the first round I loaded and used to test fire it after I cut the chamber to the last round I shot through it.

It's also my go to powder for my 257Wby so was on hand and a natural step.

Those charts are pretty accurate. I use 116 grain SC 7828 and get very near 3000 fps with the 300 grain bullets, compression load. 7828 is a slower burning powder so work well with longer barrel to achieve these numbers. Not sure what barrel less than 26 inch. May have powder unburnt fly out the pipe.LOL

I like 7828 and RL-22. I've tried bullets from 130 to 150 in 3 different rifles. Seems like accuracy is about the same with both powders. RL-22 gives me significantly more velocity than 7828.
At one time I used H-4831 and its ball twin H-450. They shot ok but they were a little slow. Hasbeen

Odd that the COAL goes from 3.250 with the 130 to 3.350 with the 140, then back to 3.250 with the 150. A 3.350 round would not fit in the magazine of my MkV Ultralight. 3.330 is about the limit.

Since Nosler only "rates" the Ballistic Tip to 3200fps, is it a good idea to push that bullet to 3400-3500fps? The 150 grain BT has always worked very well in my own 270 Weatherbys, but that's at ~3200fps.

Still working my way through some Weatherby calibers but my experience and that of a few friends is that 7828 is the laying on of the hands powder for everything from the 240 up through the 300 Weatherby.

I've started a 257 with RL22 and it'll do moa stuff. Another friend is using 7828 in his and is in the 0.5 moa range. I'm going to switch when I get those RL22 rounds shot up.

PrimeBeef: I've pushed some Nosler Combined Technology 180 grain slugs into the 3,480 fps realm with a 30-378, and they do some strange things on elk. Like break a rib on entry and never touch the far side of the body cavity. None of the elk have complained, but it is strange.

Just use an accubond

Reloader 22 140 Accubonds are hard to beat

Powder charge weight?

71.0 grains of 7828SSC , Fed GM215M, Nosler 140gr Accubond, 3.280" , goes 0.4 MOA in my mark V sporter.

I burn 7828 in my weatherbys, 25-06, 243, 270 Win, 7RM, all works good.