I have an 1885 Browning in 7RM that I purchased new back in the late 80's or early 90's. It's one of the more accurate rifles I have. It's also responsible for my longest kill on a west Texas muley at 603 yards. I couldn't do that again if I had to. My rifle loves both the 145 and 160 grain Speer Grand Slams, but I've stuck with the 145's here lately. 62.5 grains IMR 4831, Remington 9-1/2M and seated almost onto the lands gives me .5 MOA all day long. I had 3 boxes of old Federal Premium 150 Gr. BTSP ammunition that my father gave me from a deceased friend and it shoots better than the Grand Slams. Federal told the bullets were Sierra bullets with a cannelure. It shoots less than .5 MOA with that ammunition and unfortunately Federal no longer makes that ammo. I have one box left and I'm saving it for a special hunt some day.
I've recently purchased the 145 Speer BT and it shoots extremely well also. I had my GS adjust the trigger down to 3 pounds and its a pleasure to shoot now. I'd buy another 1885 if I could find one in the 6.5 Swede, but they are harder to find than hen's teeth.