Algodoo

Tips are always helpful

Rather than turning the sim frequency up so high, try increasing the density of all your parts. the higher the density the stronger everything becomes and you dont need your scene running at 2400hz to be stable.
I know you're trying to go for a realistic weight, but that just simply isn't possible with algodoo guns that actually function. There has to be compromise. Take a look at one of my guns and look at the density of the parts. you'll notice the density is very high. Same goes for any of the big gun makers on algodoo. like Meerkoos, ngphil and The Linkage
you're on the right track though.
Keep at it.

No controlls for the gun HidCore

Thanks Lethal, I'll just add a 0 in any weight

Niklas-K, just pull the trigger...

You have to add more than a 0... MUCH more than just a 0!
Just look at any of our sub-400Hz guns