Yes there used to be a .41 DE. I never saw one but it was in the catalogs.
a 1911 in 25 tok.( yeah I know its too long)X frame in 223( does not work)10MM lever guna 9x25 dillon lever gunm1 carbine in 25 toki'm sure I will come up with more later
AR10 style rifle chambered in 7mm-08.
Remington (DPMS) R25.Get it in 243, 7mm08 or 308.My 308 weighs only a couple of pounds shy of a Nimitz anchor. Shoots nice though.