Heeler, I loaded the same bullet for my 280 Ackley Improved last fall and experienced great success with it. I killed 3 deer with that bullet and 2 were bang flops, the other I made a trotting shot on an 8pt and gut shot him but this wasnt the fault of the bullet. Shot ranges were from 60 to 150 yds. My load was 60.5gr of H4831sc, Federal 210GM LRM, and I used Hornady Brass. AVG velocity from my Kimber 84L with a 24'' pipe was 2963fps.
Ill post some pictures of some exterior and interior terminal performance. I thought you might be interested since my 280 Ack Imp is the ballistic twin of your 7RM minus about 100fps. On the buck that I gut shot, I did recover a bullet and the jacket and core stayed together. I dont remember exactly how much it weighed but off hand it was roughly 1/3rd the original weight and expanded to over 2x its diameter.
Entrance and Exit Wounds
Exit Wound
Exit Side