streak
The Handi will have a slightly longer throat , don't ask me why but they do

, were your going to be limited in COL is the lever gun , as you only have so much action to work with . Stick to the standard COL for the 405 bullet and you will be fine for both .
I'm running a non gas checked 405 bullet at around 1200 fps with no leading problems so you will able to push the GC'ed one a bit more if you want , and as BNB said , they just flat knock deer down .

stimpy