Tuning Advice on Crosman 600

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Raden1942

Raden1942

Member
Feb 15, 2018
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California, United States
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Hey guys, my uncle gave me 2 guns that have been sitting in a shed for decades maybe over 50 years. Anyway I cleaned up this Crosman 600 and it looks pretty good. It has a few scratches and places where the paint chipped off but really it's not bad. Anyway I was going to sand blast it and repaint it but the finish was way better than I thought it would be after cleaning. I also looked up the value of the gun and was surprised to see that it is worth alot of money. This one is one of the first guns that Crosman made of this type. The co2 end cap is the one they put on the ones they made in the first 3 years of production. Anyway I am wondering if I should paint it or not. Would it devalue the gun to have it repainted? Also I heard these guns are difficult to rebuild. Does anyone know how difficult? I love working on my own guns but I don't love damaging guns that are worth what this one is. I would appreciate any advice on these questions and even advice on how to rebuild or what to watch out for if I do decide to do it on my own. Also I saw a couple of places that said they can rebuild it. Who makes the absolute best parts for it and has the best experience in this industry? Thanks guys This one looks like a really good collectable and I want to do it right. I hope to keep it and give it to my grandkids one day. 🤠
 
Collectors would want mint with box and papers. They aren’t exactly rare, you can find them for sale everyday on the auction boards. But they do go for decent cash.


Having said that they are the best semiauto pistol ever made. Go to the Mac1 sight and look at the goodies available, scope bases, barrels, bulk fill. Enjoy it as for what it was made for. Nobody has ever shot a 600 and not had a smile while doing it!

The one I have has an extended barrel, scope base with a red dot and wood grips. You get about three mags off a co2. Great accuracy and cans dance as fast as you can pull the trigger.
 
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Congrats on the 600. Let's start here:

https://www.gatewaytoairguns.org/GTA/index.php?topic=121809.0
https://www.gatewaytoairguns.org/GTA/index.php?topic=129067.0
https://support.crosman.com/hc/en-us/articles/203542900-600-Owner-s-Manual-EVP-1960-1970-
http://www.airgunartisans.com/CR600.htm

I really enjoy the trigger mod, but take the time to find the pen that WyoMan mentions.

Depending on your patience for seal replacement, the "softer" seals on Ebay or JGairguns are easier to deal with. 

There are only three seals (maybe four with your cap style) that seal the pressure boundary. Change all seals and the valve.

If/when you choose to rebuild it yourself, take lots of pictures as you go. The ball below the rear sight is easy to loose. The slide doe NOT have to be removed, if you line it up just keep it forward. It's not difficult, just tedious to rebuild a 600. Just study the links above. 
 
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I’ve seen a few of those for real good prices but leaked. The video I seen on rebuilding it kind of scared me into even trying it. So I called some shops and they said they could rebuild it. But after it was all said and done I end up buying one that was just re-sealed and has worked great. Mine had a few scratches in the paint. Besides that it was in great shape. I just took a paint model brush and lightly touched up those spots and you can barely notice them now.One thing I did find out that the few air gun shops that I called, the prices on rebuilding it varied quite a bit.I was warned though that if it had any internal parts that were wore out, that they might not be able to repair it. And they told me that they could be finicky. Baker airguns doesn’t even want to touch them anymore from what he told me. 
 
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I also wanted to say that no matter what route you choose to get it repaired whether it’s yourself or an air gun Smith, mine will shoot the domed Pellets. I just wanted to try it because the seller said it would and he was right.A lot of the 600s won’t shoot domed pellets. The pellets that work the best and as far as accuracy goes also was the H&N wadcutters or the RWS meisters.And that is all I shoot in it anymore.
 
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Precision Pellet would probably rebuild it, or Mac 1. Rick at Precision Pellet is in Pa. and Mac1 is in Ca. They are a very nice gun and worth rebuilding. I don't think I would paint it as it just shows honest wear.
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Yes Rick will do it at precision pellet. He’s one of the ones I talk to and was cheaper than a couple of the other places.He had me laughing so hard about this same 600 That kept coming back to his shop for repair. He told the first person that he couldn’t repair it because it had parts in it that were just too worn out. So they would sell it to somebody else and then it would end up back to him again. He said he could definitely tell it was the same gun and ended up at his shop three times.
 
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I tend to use the scratched up guns in my collection as shooters. I really enjoy letting newbies shoot them with no worries. But I have several of each of the classic Crosman co2 pe[[et pistols. To get the pins out of the valve body just use the grip screws to push them out. I think that's the only part you might consider tricky if you're used to working on vintage Crosman co2's. If you want it to look nice paint it. Won't hurt the value any more than the scratches do.

I have guns I've kept near mint condition 30 or 40 years so I understand the desire to have a good looking gun. And keeping it that way.

The 600's are gas guzzling pellet mills. I just can't shoot them slow. I can't.

I couldn't help myself I bought another recently. The price was right. 😁 Less than a C note 👍 Pretty sure it's an unusual one. Has the peeky boo co2 cap, screw in the bottom of the housing, button safety instead of the finger slicer. I think that variant normally has the finger slicer safety. Nice shape too

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If the paint isn't worn off much under the cocking slide It wasn't shot very much. The first one I bought was around 1990 at a flea market. The paint under the slide is well worn. It still shoots fine. Admittedly, I haven't used it that often. A third variant, the first thing I did was put a cartridge in it. Slapped the plunger in the cap to pierce it and it fired the pellet lodged in the barrel into the palm of my hand. 😑 Smart! And it smarted. Good thing I have tough hands. I loaded the magazine and fired a shot or two before it went full auto. Exhausted the gas. 30 years ago I don't remember how I fixed it. 😏
 
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KWK said:
To get the pins out of the valve body just use the grip screws to push them out. I think that's the only part you might consider tricky if you're used to working on vintage Crosman co2's.
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I’ve got my 600 splayed out at this moment and I’ve come to the “tricky” retaining pins. I’ve rebuild some co2 guns but never had to remove any before. Please elaborate on how to remove them (part -081) Thank you
 
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Rickem88 said:
I’ve got my 600 splayed out at this moment and I’ve come to the “tricky” retaining pins. I’ve rebuild some co2 guns but never had to remove any before. Please elaborate on how to remove them (part -081) Thank you
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I read somewhere that there are two different pins. Maybe they are, but mine had definitely been out of the gun before so I just made sure they went back into the hole they came out of. The threads in the pins are 6-32. I recall using a screw, nuts, and oversize washers to "jack" the pins out. To re-install, i used the screw to start the pins, then switched to a small c-clamp and wood blocks. Try to keep the pins aligned as straight as possible. Hope this helps.

View attachment Vintage_Crosman_Airguns_Factory_Service_Manual_all.pdf

Valve Pin Removal.jpg
 
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