Originally Posted by Dirtfarmer
Some of the 7-08 speeds Hodgdon is posting push the 7RM. Of course a reloader can always out run a small block 7-08 with a big block 7RM.... wink

Displacement matters.

But 120's at 3,200 fps,. 139's at 3K are definitely 7RM class. I notice that they're running StaBall at 59K psi, whereas other powders are typically around 50K or less for the 7-08. They do run 4451 at 58K. And, they're using Rem 9 1/2, mag primers, but that may be because its a ball powder.

Ya reckon StaBall has such a smooth pressure curve that they can add the extra pressure without issue. Or, is this just another way to sell a new powder.

This is an interesting development, for sure.

DF



I believe you're making the mistake of directly comparing the numbers for PSI and CUP.

According to a certain regression plot (by Denton Bramwell) 50,000 CUP correlates to about 58,000 PSI.

Last edited by mathman; 10/29/19. Reason: enhance attribution