I like the 1400 variant that has the metal trigger block best myself. The 140 has the trigger mounted on a pin that goes through the stock so it is very unstable. These guns are a bit strange as they cock themselves with the pressure of a pump or two from the gun being pumped up. Because of the way the valve werqs the trigger pull is dependent on the number of pumps you put in the gun. The front sight/tube plug is a weak point in these guns. It is not very sturdy. I do not know what they are worth but not allot.
 
GoldenStateAIRGUNner: Hope you are still active in the forums. In your response posting to biohazardman on Sept 30 2019, you posted
"I have a first variant 760 that is self cocking."
Can you explain to me what signifies "self cocking"? Is the opposite status "manual cocking"? What is the difference between these two? I'm looking to buy a rebuild kit for my Crosman Powermaster 760 given to me in the 1970's by my parents. CBaker Airguns seems to have what I will need, but I have to know if mine is "self" or "manual" cocking. THere is no serial number, not even date stamping on the round cap. I has a plastic stock and a longer smooth wood pump handle.

Can you, or any one else "listening in" help me distinguish between manual and self cocking?

Thanks.
 
In the early 760, the valve is kept closed by a spring until the trigger releases it. They also have a brass bolt like the one in this pic. (Kitten not included.) This one is a rusty '71 model that I found at a swap meet.

PB250431.JPG


Later models of the 760 had plastic bolts and were cocked by pulling the bolt back. When you do that you're cocking the hammer, so there's an audible click. Crosman has manuals and exploded drawings for all their guns on their website, so they're available for reference.

Luck,

J~
 
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I’ve got a Crosman 140 and the Sears branded version of the 1400.
As mentioned, the 1400 has some nice improvements but the 140 to my eye looks better.
The trigger on my 140 is better.
1400 has more power but it’s had a complete rebuild, 140 has only had an alcohol flush.

My shooting buddy bought a refurbished Crosman 1400 for $200 a few years ago from a guy in Georgia who rebuilds Crosmans. Looked & shot better than factory new.
 
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As mentioned, self cocking means the rifle will fire after pumping. Not sure
but I think the 760 PumpMaster had to be cocked to fire. Pulling back the bolt
draws back a spring and hammer that strikes the stem on a release valve that
then allows the stored air to exit behind the pellet/BB. Same on the famous
Sheridan and Benjamin pump rifles.