The bolt is called the HE bolt or the HR-1 Bolt or the Hawk bolt either way. There was a guy selling one on either Icdo or on the nation, i can't remember which but it was a few weeks ago and i can't seem to search for it right now.
The reason it was called the Hawk bolt because Hawk ICD and i believe Rocky were working on it. It was originally available for the Freestyle Pro ( Pro, Adventure Beach, etc.) and the FS7. In the FS8 they upgrade all the bolt so it wasn't a necessary upgrade any more, same with the clamping feedneck.
As for the lube, the dow lube will work just fine, sometime it swell the oring that is why they didn't recommend that you use it. Secondly for all the lube, one of lube that you can use is the one that is included with the freestyle, but that's not available any more. There were a few debates years ago on which one to use, you can actually use most of them without major problem. Easiest way though is to pick up the super lube from ace hardware if you have one near your house, i am not sure if any other hardware store carry the super lube. Radioshack also purchase the superlube and rename it to some instore brand that they sell for about 5 bucks ( for a giant tube).
More info on the lube here:
The Ultimate Freestyle Lube Thread - PbNation
It is actually a pretty valid thread as far as the lubing goes and should answer any question you may have.
Now to the efficiency issues: Sure you can shoot 1600 rounds out of a 68/45, do you really need to shoot that much in a game? To be able to shoot that a lot of stuff need to be tunes, for one thing, you will need the HE bolt, and an aftermarket board. You will also need to get a good lpr ( the JDS STD one work pretty well), with a lot of tuning between the dwell, bolt, and hpr/lpr you can get 1600 rounds out of a 68/45. Very few attempt that, since it was just kinda unnecessary and a waste of time.
Found the bolt:
HR1 Bolt for sale!!!!! For Freestyle FS7, NDFS7 and FS Pro. - PbNation
You may want to jump on that deal, and $100.00 was exactly how much hawk charge for it back when he still do the bolt upgrade / modification.
post back if you have any question.