Thread: ADI powder for 7RM

To be honest I reckon you are using the wrong powder in my opinion. I don't this 13 is going to get you the velocities you are after with that weight of projectile and that barrel length.

I personally use 2225, I think it's a better choice for the heavier slugs when you have barrel length to play with.
I'm using a 24" tube and have had a couple of good loads,

72gr of 2225 behind a 154sst was a great one,
73.5gr of 2225 behind 162 A max worked well too.

Of course this is in my shooter and the loads are hot so you should stick to the load data first before working up to pressures like that.

My two cents anyhow