The picatinny rail that I have used a single screw in the front to secure the barrel and the rail. While that method does work it does not allow the barrel/feed arm gap to be set properly. To get around this issue I counterbored the front hole to clear a socket and installed a taller set screw. This allows setting the barrel/feed arm gap, then securing the rail with a nut & washer. Since the rail was on the mill I relieved the rear to allow for easier handling of the pellet follower knob. Maybe this is how most rails are secured and I'm just late to the party.
Crosman 600 RDS Mount
- Thread starter Roboslug
- Start date
A set screw and nut is a great Idea! My barrel retaining screw hole was near stripped out when I got the gun so I drilled it out to a larger size. Then just stuck a piece of an o-ring down the hole and snugged the shortened screw up tight. That way I did not have to get the size just right to tighten the barrel and rail at the same time like I did on my first gun. I got lucky on my choice of picatinny rails and the stock slotted holes lined up for me. :^)
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Thanks Bio. Recently the shot count had been decreasing to about 33 total per cartridge, with a usable 26-27 shots. It was resealed about 4,000 pellets ago, but it does hold gas well for at least a couple weeks, so I thought maybe the hammer ID o-ring was failing. I sure wasn't looking forward to opening a C600 for that. After resealing well over a year ago it went about 37-39 shots per cartridge.
Well, when I installed the rail the first time I noticed that the barrel slipped slightly an that's what got it where it is today. I initially set the gap to about .0015". Wow! That got 49 & 42 shots for two cartridges, but a couple failures to feed per cartridge. I backed off to about .0025" for the gap. It now gets about 39 shots, 33 usable per cartridge and no jams with RWS Hobbys or Meisters.
Well, when I installed the rail the first time I noticed that the barrel slipped slightly an that's what got it where it is today. I initially set the gap to about .0015". Wow! That got 49 & 42 shots for two cartridges, but a couple failures to feed per cartridge. I backed off to about .0025" for the gap. It now gets about 39 shots, 33 usable per cartridge and no jams with RWS Hobbys or Meisters.
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The gaps to the feeding arm seem to be more gun specific than I think they should be. Still when you get them right you don't get many jams. Forty plus shots, from one of these, is great I have never managed over thirty,
Thanks for the post.
Thanks for the post.
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I agree that the gap is gun specific. Probably has a lot to do with the cam & cam ring condition. Not to mention the variations (tolerances) in the die cast frame between the barrel and Co2 port.
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