Great site, with answers to many of my questions before purchasing a 1077 - this is my first post.
I'm posting some subjective findings, thoughts and questions:
Intuitive feel for impact of 1077 pellet after about 6 shots from the CO2 cart:
Shooting into rather dense pine 1 x 12 at about 5 feet. I was shooting somewhat off-axis to avoid a richoche. The pointed pellet penetrated about 1/8 inch below the surface. That is the back/skirt of the pellet was about 1/8 below the surface. That would put the tip about 1/2 way (3/8 inch) through the 3/4 inch board.
In comparison, a Daisy 1000x 1000fps shot completely penetrated the same board.
Animal hunting:
Shooting a squirrel (he had several warning shots to rump with low power BB gun first). Hit caused some damage as animal was slow to retreat. I was distracted by neighbor woman as I tried to get 2nd shot or capture (... what are you doing ... yack yack). Anyway he seemed to be moving slow, but was able to climb a tree before I could get to him. I don't like to wound animals, but was unable to finish him off. Actual seriousness of wound is unknown.
Temperature of C02 cart affects gas pressure:
Has anyone removed part of the stock with the intent of using your hand to keep the cart above ~90 deg F?
For your CO2 question. No I haven't. Butn someone told me a nice tip the other day for hunting in the winter. He said to take a pan of cold water adn drop 10 co2's in. than warm up the pan till it gets just about boiling. then grab a small thermal lunch bag and toss your co2's. carry it on your hip like a flask. than when you are ready to shoot pull out one of the "hot co2's" and load her up. Hope this can come in handy!
YOu can also put the co2 in the pocket or it you're not too shy err...tape it to the inner upper thigh. More like the crotch area. :P The body temp will keep it warm. Another way which I'm not sure about because of the the heat factor is to get one of those hamd warmers and shake the chemical so the heating is started then place the co2's inside the pocket. Now I've heard stories about people getting burnt from the chemical handwarmer shakers which if true means that the co2 might be a unstable bomb waiting to blow up on you.
Once you put the warmed powerlet in the gun and fire it won't the Gas boiling off chill the powerlet thus rendering any pre-warming useless.
Not sure about boiling powerlets either, that doesn't sound too safe to me. But CO2 is not in my field so I am not too sure about all of it's characteristics.
Matthew Fulton (Login darkstarops) Forum Owner 66.80.212.66
Re: Question on the CO2 Warming
November 3 2003, 5:51 PM
Well. CO2 is like propaine. its a liquid but strong when decompressed is a gas. CO2 is cold so therefore it needs a warmer temerature to reamain expanded. Like a paint can. for instacne. it's presurised but when your freeze the can, it can no longer spray. So basically put it this way. It matters. Ever play paintball in the winter using co2? You get alot of duds because of the low and cold atmospheric pressure. Thats why winter players use HPA (Hight Pressure Air).
Update on shooting squirrels:
It seems to take 2 good hits to stop them at 5-10 yards. More hits are required if you don't hit key organs. I use a double-tap technique now. It seems I can get the 2nd shot off, as they are stunned from the first shot. I then rush them and finish them off. BTW, I am eliminating these pests because they are taking all my pecans. What they don't eat they bury in the grass and generate unwanted spring growth.
Crowning barrel: (No performance improvement noticed)
My barrel had a poorly aligned countersink and I was suprised how much lateral adjustment was required on rear sight. I used the technique under message (not hitting target). I found it was difficult to see riflings until I shoved a pellet down the barrel about 1/4 inch. I recommend releasing barrel with the 2 wing tabs on the receiver. This will allow you to move the barrel out in the plastic sleeve another 1/2 inch and get a better view to work. After the operation I noticed no improvement in performance. I am baffled why rear sight is not in closer alignment with barrel!
Performing trigger pull improvement:
I have taken off stock, but fear parts (Springs) falling out if I go farther. What can be disassembled after stock removal without such problem? I'm particularly interesting in lightening/smoothing trigger pull.
Your guess is correct, there are a few parts, springs, etc. that will shift once you get the receiver apart, and you can't get to the trigger assembly without opening the receiver. If you're going to go into the guts of the 1077, make sure you have a schematic for reference and take your time. The biggest problem I had was getting everything back into position and holding it there while I reassembled the receiver halves. Not easy.
There's not much that can be done with the trigger so it may not be worth the hassle. Your call as to whether you want to risk it. I have a friend who gave up and tossed his 1077 because he couldn't get it together again.
If you do want to try trigger work, you can go for a lighter return spring, lube the hammer roller pin and smooth out whatever burrs you find.
It was about 1 degree Celsius here today. I found that my CO2s were only good for about 24 shots (and that was pushing it).
I tried keeping new CO2s warm before inserting them into the 1077, but I found that it only made a difference for the first shot. After that, the low temperature of the gun itself had absorbed the heat.
Has anybody considered installing a small, thermally regulated electric heater inside the CO2 chamber? The heater & power source (small battery) would have to be installed around to the shaft on part # 1077-045. The regulator could be set to automatically shut off the heater at about 45 Celsius (CO2s are save to about 49C).
Ellbee,
Thanks for the heads-up on the disassembly issues.
Mdolinar,
I though about the C02 heater as you discussed. I think it would take a large battery to keep it warm though.
I used the gun mostly in my backyard, so I'm thinking of a small heater (resistors) that I can connect to a wall transformer. With the right connector, I hope to just grab the gun and disconnect with a small tug.
First, I need to decide if I converting to the large C02 cart. Also, I don't understand why the Air-soft cart goes back under the stock. It seems it would be less bothersome if it went straight out under the barrel. No time to do this modification now though.
Tercell