RTI Short barrel in a long shroud, will it work?

I do not have your gun, but i do have a gun shooting thru about 12 inches of baffled shroud/moderator if it gives you any hope

Similar here.....barrel only sticks into about 1/3 of the shroud on the Ghost .20, I'm probably up around 20,000 shots through it now, without any issues. As long as youve got a sufficiently designed front and rear shroud support/alignment system, I can't see a reason for any issues.