It's like russian roulette, whenever i click the fire button of my mouse, the weapon does or does not fire. I also noticed that the mouse pointer is not catched by the game at every beginning, i first have to click once until i'm able to actually change views with the mouse. Is there a command in dos box that would maybe fix that problem?

I've only noticed that happening to me with the shotgun for some reason - kept "jamming" up while other weapons worked fine...

I had the same problem and build me a workaround - I just remapped leftclick on mouse to a key, which is ingame mapped to fire.

What you need:

1. download and install autohotkey from www.autohotkey.com
2. start autohotkey and use this script:

[code]
;Redneck Rampage Mouse Rewrapper Script

v::
if (Mapmouse == 1)
{
Mapmouse := 0
}
else
{
Mapmouse := 1
}

Return

LButton::
if (Mapmouse == 1)
{
Send q
}
else
{
Click
}
Return
[/code]

It will remap your left mousebutton when you press "v" and turn it back to mouseclick if you press "v" again.
I mapped the mousebutton to "q", but you can change it here:
"Send q" <-- just replace q with a button of your choice.

Hope that helps some people. ;)

This is because shotgun has implemented sensitivity, so longer you hold the button more responsible and harder is attack. This applies also for other guns reactions and main menu (saving and loading) even if doesn't show any difference in graphics/attack. So it's not only mouse buttons that includes "touch/grab hardness simulation". ;-)