I was just doing a bit of research and came across this modification for Thompson Centers. Converting the 209's to small rifle primer shells. They are using a .22 hornet shell. Just prime/reprime it. I have suspected what's called "lift" for some time now with mine. I get a low shooter sometimes. Usually means that I was loose on the powder at ignition. Thinking that 209 is creating enough energy to lift the bullet/sabot a bit before the powder gains pressure. I'm wondering if this conversion has been tried by anyone here and whether or not it would provide enough flame to light up BH209?

Edit to add: After further review they actually changed the design and are now using 25 ACP shells. No trimming of the shells needed to fit.

Link to this is here if you want to read up on it all http://www.muzzleloadingbullets.com/Articles.asp?ID=272