Quite possibly it is a Henry, long barrel lever action. Gimlin had a 30'06 bolt action rifle at the time of the filming that had a much shorter barrel.
A real
Henry rifle, eh? Sweet. I bet Gimlin wishes he still had that one. Pretty much useless in 1967 unless you had blackpowder loads. Bob Heironimus probably wishes he still had his old Corvette.
But what about these rifles that P&G carried as self-defense against an attacking Bigfoot? Roger had a .303 British, and Bob had a .30-06. They tell the story of carrying these in scabbards as the rode around searching for Bigfoot.
What does it mean to be carrying these high-powered rifles around on horseback in the Six Rivers National Forest (Bluff Creek) in the early weeks of October 1967? What would have been thought by anyone seeing them riding around? What would forestry workers, road workers, or government employees think of this sight?
The Man: Hey guys. Whatcha doin out here in the woods?
RP: We're lookin for Bigfoot.
TM: What are the rifles for?
RP: We have them in case Bigfoot attacks us.
TM: Are you sure you aren't hunting deer?
RP: Nope, we are Bigfoot hunters.
TM: Do you have a hunting license?
RP: Nope we don't need one for Bigfoot.
TM: OK. I just hope you guys aren't poachers... cause I don't think yer gonna be seeing any Bigfoots in these parts.
RP: Well we're lookin for Bigfoot cause other guys seen Bigfoot around here; but these rifles is only to be used in case we git jumped by
The Boss of the Woods.
TM: OK, have a nice day and good luck!
So, what were the laws about carrying rifles and hunting around those parts in October 1967?