Marauder barrel on 1377

[SciGuy]

It seems that the 20 inch choked Marauder barrel (Part 1763-017) may well be the best Crosman barrel available.  With that in mind, will the .177 Marauder barrel fit the standard Crosman steel breech that I will be putting on my 1377C.  And by fit I mean with no machining and that the barrel port lines up with the valve port of the 1377 compression tube.

[SciGuy]

Got my answer on another forum.  The breech end of the Marauder barrel doesn't have the 60 degree taper of the 13xx/22xx barrels and the air port is in a slightly different place.  

Looks like I will be getting a 1760 barrel, but I think I'll pick up a Marauder barrel at the same time and see if I can make it work.  If anyone has any experience doing this, I could surely use any advice you're willing to share.

[mr007s]

I would be interested to know if the Marauder barrel is the same OD. 1/2" or 7/16".