Crosman 1377 advice

[Modski66]

Hmmmm. Not my cup of tea (fugly) I have seen pictures of that stock and thought it was an aftermarket one, not oem!
One last thing I would like to ask; the rifling in the barrel is not very distinct (my point of reference is a FWB 65 though), if I decide to change it, will a new one work with a phase one steel breech and probe?
In an old thread from 2010, it appears that a phase one barrel is too small for a phase three probe...

Cheers,

Mark.

[--ped--]

other way round on the barrel the phase 3 barrels use a 1/4" probe and the phase 1 and 2 use a 5/16" probe with a sharper angle on the leade in which is the same on both .177 and .22 barrels
think a lot of the .177's were smooth bore but some were rifled and yes it is very faint

[Modski66]

I will be interested in how it groups when I put it back together.
When I pushed a pellet down the barrel, it does leave a faint rifling mark, but more worryingly, during the journey, it goes stiff then free, then stiff and free a number of times...

[--ped--]

try pushing a few cig filters through the barrel with a light ceaning soloution as often the barrels get full of crusty oil from people excessively using pelgun oil
I prefer a tad of hydraulic oil every now and again on the pivots

[Modski66]

Having read about the Canadian spec valve on the latest models, I didn't think there would be a relief hole on early examples. I did check on the back face of the valve - no hole, but as I was doing a trial fit today, I saw a hole on the SIDE of the valve, venting into the trigger space.
That will be part of my low fps accounted for then!

[--ped--]

is it directly opposite the exhaust port and is it a brass or aluminium valve

[Modski66]

It is directly opposite the transfer port, and the valve is brass.