New 45-70

[guns-o-fun]

I just got a "new" Marlin Guide Gun of pretty recent manufacture off Gunbroker.  Just a box or two of rounds through it.  Beautiful and handy little powerhouse.  I would like to get a 45-70 handi barrel to mount on one of my SB2 frames to keep it company.  Just wondering whether I should get a BC barrel (and maybe even cut it a bit shorter), or is the 22-inch plenty adequate for a little higher pressure, faster loads?  Any real advantage to the longer barrel with such a large caliber?  Any response from folks with experience with either barrel would be appreciated - obviously not going for the classic look of the whole BC package here.  This may be an old question.  If so, I apologize.

[gcrank1]

I have the 38-55, similar though not 45-70, and the long barrel balances on out there for me in a way the shorter does not. Im used to muzzleloaders so even this 'long' barrel doesnt seem too long.
Handle them both if you can, you will be able to tell right off which suits you.