I just picked up an old hundred count box of 6.5 100gr. BTs picking through bullets at a shop. Got them for $9.95. I'm pretty certain they'll make fine bullets for reduced loads in my 6.5x55.
I love picking through stuff at older shops. Never know what you may come up with.
They will also work fine pushed out of a 6.5 barrel at 3350 fps MV, but I'd load them in the 2700 to 2900 MV range.
20 grains of Blue Dot in a 260, with a 100 grain BTip...is a darn good deer combo...like 2450 fps MV
I've done the same thing with the Swede....30 grains of 4198, or max of 24 grains of Blue Dot.