7 mm PRC, ramshot grand, 160 CX

I have not seen much reloading data for 7mm PRC WITH Ramshot Grand so I just wanted to share some results I had.

Disclaimer these are my results not yours. Please be careful and work up your load safely.

Velocity measured with a labradar.
I'm using a bat machine vesper action with a preferred barrel blanks pre-fit barrel 24 inch with 1 inch integral muzzle brake 25 inch overall.
Hornady New brass. Hornady 160 CX bullet. Ram shotgrand powder. CCI 250 primers
Grains powder = velocity per second
68.0 = 2990
68.5 = 3000
69.0 = 2990
69.5 = 3020
70.0 = 3046
70.5 = 3083
71.0 = did not read
71.5 = 3120
72.0 = 3155
I was expecting to start seeing pressure signs at 71.5 grains but I did not see any pressure signs even at 72 grains.
My load was 2.5890 inches to ogive giving me 0.0600 inches jump.

Thanks. Let us know what accuracy you find.

How much did the powder fill up in the case at 72gr?

I could just barely hear any movement so 99+ percent. Hence why I did not try one at 72.5. I didn't see any pressure signs on the case and the bolt didn't fill any stiffer then factory Hornady outfitter 160CX. I plan to work up loads at 71 to 71.5 grains as the speed was close to 3100 ft./s and that was my goal.

My factory ammunition velocity in that rifle was 2920 average on lot number 3241201.

Next, I'm gonna try some ADG brass. I'm hoping I can maintain 3100 ft./s without over filling the cases.

I've done lots of compressed loads with Retumbo powder in a 300 RUM. But I have no idea how RamShot Grand would perform in a compressed load. Without solid data in a book, I wouldn't try it. Certainly not in a rifle that I have a lot of time and money in building.

One thing to note. The RamShot did have a slightly different feel to the recoil. It was a hair sharper feel then the factory ammo.