good starting powder for 7mm Mag

[Mr. Longbeard]

I've pretty much have everything that I need to get started on loading for my new 7mm Mag... Except powder... I have a can of RL22, H4895 and H4831... I'm planning on shooting a 140gr Nosler Part or a 140gr Nosler Accu Bond...

My Nosler Reloading manual pretty much say RL22 for every bullet weight... So I'm pretty sure I can use RL22 with desent results... I'm just trying to get other powders... I've also notice that IMR4350 is all over that manual too for the 7mm Mag...

Thanks for any advise

[devil dog]

The fastest burn rate of powder I would use in a bolt action is IMR 4350, since you have the RL22 I would start with that, my book shows the most accurate load at 63.5gr@3160fps up to 67.5gr@3340fps, as always, I sugjest makeing three rounds at start load and build up incruments at .5gr, keep them all marked in different baggies and head to the range. Shoot each group looking for consistancy and accuracy and stick to the best load.

[fishead]

I loaded some 140 accubonds with rl22 for a buddy stoped at 67grs and the results were very good on paper, you will like em, he never got a shot at a deer.JG

[Mr. Longbeard]

I Will try that thanks

RL22 or H4831sc is about the best performance I have seen.

[eldeguello]

H4831 and RE22 are both very good powders for the 140-grain bullet in the 7mm Magnum. For heavier bullets like the 175-grain, I get better performance from IMR7828, a powder developed specifically for the 7mm Rem. Mag.

[Mr. Longbeard]

Is the H4831 and H4831sc basically the same powder???

[Solitary Man]

They're different only in terms of kernel size. They should have the sameburn rate.

BTW, H4831sc has been the best powder in my 7mm mag. Here's an example of the kind of accuracy I've gotten with it:

[Mr. Longbeard]

WOW that's awsome!!!! I'd be happy with true 1" groups

[James B]

I found H4831 to be about the best powder for the 7 Mag although way back, I burned about a ton of IMR 4350 as well.