If it's just not compressing you can give it some nd 10w30, let it sit upright in a corner for a few days till you get compression then give it a thorough flushing with rubbing alcohol and repeat the oiling process. That bare brass polished out '67 312 on the bench there is one sweet little shooter ( a gift from a friend who acquired it in rough condition and refinished + polished it out as an experiment) it came to me with original seals which have finally given out though and I haven't gotten around to resealing it. I'd look into determining the age of it first though as they made 'em from I believe the 30's till the early 70's when they updated the safety and the model numbers went from 310 312 and 317 to 340 342 and 347.Ī reseal is always a good thing if it needs it, but like anything " restoration " can hurt value. It sure as hell is, those old " tootsie roll " Benjamin's are real sweetheart of a little rifle. Never been into anything foreign or older than the 1965. There are really no other non standard tools I have needed, I'm sure some things my he different if one was working on vintage pumpers from southeast Asia or for earlier Crosman rifles such as the 101. That valve tool is really the only specialty tool needed.įor crosmans like the 140 and other earlier models removing the piston head to replace the pump cup can be tricky, but a cut and shaped washer makes easy work of kt You can compress the main spring a bit to make it easier, but then you'll have to cock the gun before you can pump it. It can be bit tricky to get everything in without cross threading the retaining nut, but its not too hard if you've done it before.
Removing the retaining nut is easy enough to do with a ground square socket, but it's the threaded valve puller that one needs to buy so it's easier to just buy the too for under $20 which handle both functions. Yes the valve puller for these is available inexpensively from pyrmidair ( best price around ), lots of other places to buy them too but I just have not needed one in a while.
I've got a few tools on the way, but generally this really is about all I need. Really bore cleaning tools aren't even generally used. There's really not a lot of difference in the tools one would use on firearms, there are just a lot less specialty tools needed and you don't use any kind of solvents and such in basic cleaning. Same goes for co2, in fact vintage American co2 rifles and single shot pistols are even easier to work on. There's really not much more you need to reseal a multi stroke pneumatic airgun, just the ability to not bugger up any roll pins or screws and of course the rebuild kit. My area of airgun interest is mostly just multi stroke pneumatics with a few Co2 guns, and I'm an iron sight kind of guy with only one scope I occasionally use. I borrowed one when I last needed, and just have not purchased my own yet. This has been all I've really needed aside from the specialty tool required for opening the soldered in valves (it's a cartridge valve with one half soldered into the compression tube ) on original pre '92 Benjamin and Sheridan airguns. This model comes with both a rail and an intermount.I've been doing personal airgun work for about 6 years now and while the quality of tools I use has gotten better, the types of tools I use has stayed the same over the 31 or so airguns I currently own. To scope this gun- you have to purchase an aftermarket rail or an intermount. This gun does not come equipped for a scope from the factory- therefore our specs have it listed as unscopeable. The 392 has the power and accuracy to take small game and pests- but you'll find yourself picking up this rifle every time you want to plink or shoot spinners. I think 12 is safe because the 342 was rated at 12 and had the same parts. A healthy 312 will launch B-S Domes, or HC's at about 600 fps with 8 pumps and 650 with 12 and hold air for months. You can vary the velocity by the number of pumps (up to 8). At 50 yds, it grps 2'X 3', maybe 2x2, with Dynamics. The rifled brass barrel is finished in black and sends pellets out the muzzle up to 685 fps. The hardwood Monte Carlo stock is sleek and lightweight. An Air Venturi Intermount is attached to the breech- a Weaver/Picatinny rail is attached to the intermount and scope rings are mounted on the rail.Ĭombo includes Benjamin 392 rifle with an UNmounted Leapers 4x32AO scope- Weaver rings and intermount with Picatinny rail! Scope and mount are not installed on this gun.Īn American classic! The Benjamin 392. This air rifle has no scope rail or dovetail. Whether you plan to shoot again the next day or not again for another 2 years- always put one pump into the gun when you're done shooting! To maintain the seals for a long time- remember to put one pump of air into the gun when putting it away after shooting.