Crosman 1377, all wood and metal

Danco1987

Danco1987

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Put this together at the weekend. Have 2 backpackers and parts for two 1377s, here's one of them.

Wanted an all wood and metal 1377. This one has a flat top piston and valve, trigger modified and shoots nicely. Although I do prefer the manual cocker at the back for the hammer and I have one, but with the set up it's too hot and I do not want to weakened it in case I over do it and ruin it, so I've gone for the bolt cocking hammer setup for the time being and a suitably matched hammer spring. This does 4fpe on 5 pumps no air left over and maxs at 5.2ftlbs with jsb heavies at 8 pumps with air left over. Then drops off past 8 pumps which is good. It's very quiet with his fatboy silencer

I'll probably build a second 1377 and have a go using the manual cocker at the back and I have a aluminum cone pump mechanism and valve which do not generate as much power as the flat top set up. I will also try a lower diameter transfer port also and I am hoping to max around 5fpe at 8-10pumps and not dump any more pumps above that. Then I will swap the wood grips over and stick with the manual cocker one if I can set it up right. I polished it up nicely today so I'll use it on either a 1377 or one of my backpackers.

Here she is
20250105_190310.webp
 
Danco1987 said:
That's a classic. Manual cocking as well, think they switched to the bolt style in the later models but I don't know why, I prefer the older style
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It's been a solid performer since my dad brought it home circa 1980s.
 
There's something about these crosman pump ups isnt there. I have an old backpacker from early 2000s.

I mainly hunt with pcps now - hw100 mostly, a brocock, and my heavily modded BSA scorpion Pcp. But i had a 1377 when I was a kid which I loved, got me into shooting and provided me with hours/days/weeks of fun. Never really been a plinker as an adult, tried lots of different air pistols and rifles for plinking purposes but never end up keeping them. Where as these crosman pump ups, I love them and still have them. Use them in the shed with few a few pumps , garden at max, take it on my permissions for a quick plink. Probably because they bring back memories of my youth :) . Plus they're great fun modding them too.
 
They are a right money pit but great guns,I wonder how the quality will hold up now they are manufactured in china.
 
rob hunt said:
They are a right money pit but great guns,I wonder how the quality will hold up now they are manufactured in china.
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Haha tell me about it.

Quality probably won't. Making the oldies more desirable I imagine. Still there's loads of aftermarket parts out there to bring them back up to standard
 
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