nematode

I have no idea how he put this together, and he has been pretty secretive about it when asked but this one here: https://www.youtube....h?v=f1G6V6a2T1E
is by far the best one I've seen anywhere. Figured just seeing it may help you out.

It looks like he uses a hopper style magazine instead of loading each dart into an opening/closing breach and that the bolt is slid backwards and then forwards again before firing, instead of just being pulled backwards. I'm not sure how that works, but it seems to be a different design. Given that my bolt is designed to pull back about as far as his, it does however show me that I may have underestimated the launching power of my design, so that is very helpful!

If purely looking like a WWII bolt action rifle with mediocre performance with stock darts is your main concern, I would honestly recommend modifying a Buzzbee Range Master cosmetically instead of building a blaster from scratch. The range master is bolt action (although it acts as a pump instead of priming a spring), and also has a breech similar to the one you are describing.

I am not trying to discourage you from building from scratch, I just think for your purposes this is a slightly better idea.

On a side note, threads created with a less than complete blaster, are usually extremely er0tic by the higher-ups even though your diagrams are at least above average.

Edit: Filter fixes.

I appreciate the advice and I did look at the Buzzbee Hunter and Range Master, but I decided that I wanted to make one myself. I forgot to mention it in the first post, but I will be using streamline darts. Also, I don't necessarily want mediocre performance, I just don't want something that will hurt/injure people.

I'm not sure if "er0tic" was the word that you meant to use. It doesn't make sense in context, so I'm not quite sure that I understand what you are saying.