Draconis, on Apr 5 2009, 09:06 PM, said:
There is a writeup (in the mod directory) on how to do exactly this to a DTG.
Yes, that's my mod in the mod directory and it's doable. I've looked at the NF and thought about doing it, but I guess I never got around to it, I don't remember why.
But the reason that I only went 1/2 inch more with mine was exactly what cheesypizza said, the plunger physically wouldn't go back any further. I also know that Mr. Badwrench got an extra 1/4 inch out of a Maverick, you'll find that thread on NHQ, it was something about rebarreling a Maverick.
I think the best thing to do is just check how much further things will pull back after they're already primed, then decide what's preventing them from being pulled back further. In the case of the DTB, it was the shell that wouldn't allow it to pull back that extra half inch, and it had to be cut. On the NF, I think it would be the spring being fully compressed. The Maverick needed the catch reversed. I briefly looked at the Firefly, and I think the priming handle prevents it mostly.
I bid you good luck.