Thank you to everyone for the replies and suggestions.
I picked the 1910 up locally, it came with a few packets of original Kynoch and some loaded rounds. The loaded rounds look like military 30/06 (LC head stamp, 235gr spire points and what looked like AR 2206, 44gr. I am sticking with the 270gr Woodleigh RN because it feeds perfectly from the Schoenauer rotary mag. The main reason I wanted to try AR 2208 was I thought it may fill the case more than the AR2206.