True.......209's are typically hotter burning, more reliable, and more weather resistant.

But, if you convert a #11 cap gun to the 209's, be prepared to rework your favorite loads. I've know several who converted to 209's and ended up going back to the #11's because they could never get a load they were satisfied with. This probably isn't an issue on a gun designed for the 209's, but on a gun originally designed for caps......you might not help yourself with the conversion.