Umarex 850 Air Magnum Warning

[London177]

The UK importers of the 850 have warned owners that they should only use CO2 canisters recommended in the owner's manual. Others can lead to seal failure. Here'a photo, poor one, of the article. It appeared in April's "Air Gunner" magazine. Moderators please delete photo if there is a copyright issue  
I am using Crosman made ones and have also used Walther ones with no problem so far (850 has had about 3,000 pellets through it).
regards,
Alan

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[ribbonstone]

Do seem to be some differences, not just in thread length.  Would watch the Crosman bottles for roughness at the sealing shoulder.