Help? 185 Juggernaut 308 win semi-auto

[IanHusaberg]

Like the title states, I'm looking to start load development with the 185 Berger Juggernaut in my 308 S&W M&P 10 18" barrel 1/10 twist. I had some CBC factory ammo I broke the gun in with and am going to try to use this brass for now. Not looking to use expensive Lapua brass here. I'll be using 210m primers. I have RL-17, RL-15, IMR 4064, on hand. I'm open to suggestions and will try other powders if I need to? Anyone have a pet load they like? I'm trying to get out to 1000y?

Thanks, IanHusaberg

 

[IanHusaberg]

2000Mr Is the answer?

 

[jsthntn247]

You don't want to use 2000mr in a gas gun. Varget from 42-43.5gr is where you want to be. Should get you around 2650 and easily get you to 1k

 

[IanHusaberg]

Roger!

 

[Forward543]

My experience says 2650 with 185's is really fast out of an 18" gas gun but if you get that, you will be kicking ass. I usually get around 2600-2650 in 16 and 18" guns with 168's. All 3 of the powders listed will probably work. Check 3 sources, start low and find an ocw.