Is there a need for a RAW Single shot magazine design

This is what I have so far. I realize the pellet prob is over sized compared to the pellet so not sure if the pellet will fall out of the magazine. 

I need the diameter of all caliber pellet probs in order to make these magazines.

Also will need some test dummies in order to work out any issues. 

These will be printed out sourced to get high quality prints the price will be a little higher. 

If the demand is out there we could get them CNC out of plastic at higher cost.

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I think you are making that too complicated. The RAW is easy to load without a mag. It might be best to just make a tray that you would just drop the pellet on to.
My point being if you are going to have to put the pellet into something it may as well be the chamber. The problem with most air guns is access for your fingers to get the pellet into the chamber. Not so with the RAW. You might be solving a problem that doesn’t exist I have relatively small hands consider that as well might help my big finger friends 
 
I think you are making that too complicated. The RAW is easy to load without a mag. It might be best to just make a tray that you would just drop the pellet on to.
My point being if you are going to have to put the pellet into something it may as well be the chamber. The problem with most air guns is access for your fingers to get the pellet into the chamber. Not so with the RAW. You might be solving a problem that doesn’t exist I have relatively small hands consider that as well might help my big finger friends

I totally agree! Why make it complicated where you have to rotate pieces, etc... I’d rather have one that allows you to roll a pellet or slug into position. It’s your baby, just a suggestion. 
Stoti