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PostPosted: Sun Nov 08, 2020 10:53 pm 
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Joined: Fri Jun 08, 2007 8:45 pm
Posts: 816
Location: Toronto
About 10 years ago , CT sold JT 12 gram cartridges when they didn't have Crosman in stock. I tried them with no issues but I think they had a narrow neck.


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PostPosted: Tue Nov 10, 2020 11:04 am 
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Joined: Wed Feb 07, 2018 8:10 pm
Posts: 889
Location: Winnipeg MB
Nowhere, the current design of the Crosman 12 gm. CO2 cartridges is also a bit larger & has sharper edges than other CO2. They have ruined the seals in my Air Venturi M1 Carbine magazine. So I switched to Umarex & Mosa CO2, and everything works better. Tech. Support at Air Venturi advised not to use Crosman CO2 in the M1 Carbine.

Crosman CO2 were also causing issues with my Artemis CR600W (spent cartridges were sticking in the tube & not coming out). I switched to Mosa CO2 & no more issues.

So, from now on, I only use Crosman CO2 in Crosman airguns.

I think the Mosa CO2 has a very similar shaped tip to the Umarex CO2. So are probably interchangeable for those that worry about seals shaping to CO2 tip shape after prolonged usage.


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PostPosted: Tue Nov 10, 2020 11:05 am 
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Joined: Wed Feb 07, 2018 8:10 pm
Posts: 889
Location: Winnipeg MB
ten-ring wrote:
About 10 years ago , CT sold JT 12 gram cartridges when they didn't have Crosman in stock. I tried them with no issues but I think they had a narrow neck.


I think JT 12 gm, CO2 cartridges are still sold. Just not sure where.


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PostPosted: Tue Nov 10, 2020 11:36 am 
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Joined: Sun Jun 28, 2020 5:24 pm
Posts: 170
Location: Montreal
I mostly have Crosman C02 Capsules, but decided to try the MOSA

Do you guys think its bad for me to use both brands in the same gun, will this deform the seal making
it unsuitable for the other brand of CO2 bulbs?

The tip shapes are not the same,


Mosa left, Crosman Right

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PostPosted: Tue Nov 10, 2020 12:06 pm 
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Joined: Wed Feb 07, 2018 8:10 pm
Posts: 889
Location: Winnipeg MB
I read a review once that said that seals conform to the size of the tip of the CO2 cartridge over time, and may cause leaking issues if you use a cartridge with a different sized tip. But others, including my airgun repairer don't agree.

I personally try to use a manufacturer's CO2 in their airguns, if I have that brand. Otherwise, it's trial & error. As mentioned before. If it works OK, I use it. If it causes problems, I switch to a brand like Umarex or Mosa, that have smaller tip with less ridged edges.


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PostPosted: Tue Nov 10, 2020 1:07 pm 
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Joined: Fri Jan 04, 2019 11:45 am
Posts: 59
I tried new Mosa cartridges on Umarex Luger P08 and it looks like they work the same as Crossman CO2 I used before in that gun. At least I didn't notice any difference. Logically I think that seal in magazine should conform slightly different cartridge head size just fine if seal is not hardened because of age and lack of lubrication.


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PostPosted: Tue Nov 10, 2020 3:39 pm 
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Joined: Tue Oct 11, 2011 2:27 am
Posts: 341
The picture of the Crosman on the right looks just like the cartridges that damaged my Lever Action seals. On the Lever Action the seals are large O-rings and the entire neck of the cartridge slides through them when you insert a cartridge, so the seals pass over the cap and down quite a ways on the neck by the time the cartridges are fully in. Sliding the empties out again, the seals catch on that lip and this is what I believe caused the leaks.

On the other CO2 guns I've owned the seal just buts up against the end of the cartridge and seals on that face. I think that unless you have a gun that seals the way my Lever Action does any cartridge should be fine.


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PostPosted: Tue Nov 10, 2020 3:41 pm 
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Joined: Tue Oct 11, 2011 2:27 am
Posts: 341
BB1Shooter wrote:
Nowhere, the current design of the Crosman 12 gm. CO2 cartridges is also a bit larger & has sharper edges than other CO2. They have ruined the seals in my Air Venturi M1 Carbine magazine. So I switched to Umarex & Mosa CO2, and everything works better. Tech. Support at Air Venturi advised not to use Crosman CO2 in the M1 Carbine.

Crosman CO2 were also causing issues with my Artemis CR600W (spent cartridges were sticking in the tube & not coming out). I switched to Mosa CO2 & no more issues.

So, from now on, I only use Crosman CO2 in Crosman airguns.

I think the Mosa CO2 has a very similar shaped tip to the Umarex CO2. So are probably interchangeable for those that worry about seals shaping to CO2 tip shape after prolonged usage.


Thanks for the tip about the M1. I've been thinking of getting one and if I do I'll be sure not to use Crosman cartridges in it.


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