Always had mild curiosity about about a BR case necked down to 20 caliber, but I've got a couple 204's and it never really got past the Curiosity level.
built a 20 BR Pac Npr -----9 twist to run 55 Bergers
P/dogs died no faster..........
that barrel is now a 20-222 & runs 40 V Max......
Fuggin lazer.......