Crown MkII shroud vent questions

[my87csx481]

Sorry for not having access to a Crown MkII. In a video, I saw what I believe were some vent holes in a Crown shroud.

How many vent holes are there? And what diameter are the holes? And does the quantity and size change as caliber size increases (and or as barrel liner length increases)? If so, I'm seeking specifics about .22, in 600mm length. Thanks.

 

[Kgphotos]

My MK2 Crown in .22 600 mm barrel has one vent hole in the shroud. I wasn’t actually sure when I read your post so I pulled it out of the safe to take a look. I’m not sure of the diameter of the hole. It is pretty small.

 

[my87csx481]

Thanks for the info.



In case anyone is curious, this is the video where I saw the vent hole, have a look at the 1:25 mark: https://www.youtube.com/watch?v=wrVJJ2DvojQ&ab_channel=Sub12Airgunners

 

[my87csx481]

Oh.... @Kgphotos yours is not a sub 12 FPE gun, right?

 

[Kgphotos]

No. My Crown is not sub 12fpe. 

 

[my87csx481]

Thanks for answering.