RE: Knight Disc Rifles
If its a regular disc. ~2003 model with the yellow discs, I suggest only one loading with 209's. I believe also, you can get No11 from the pre 2002 models. I never seen it for sale as most people are upgrading from No.11 not down. I wouldn't mind loading no.11 3 times. Not near as powerful as 209's as you know.
If its the extreme version, with red disc, definately only one loading.