Big Bore Pistol Build

[Wayne52]

Yep, the volume after piercing includes all the air space around the cartridges.... so you end up with a couple less shots than you would if it didn't do that.... before the pressure starts to drop when all the CO2 boils to a gas.... Up until then, the pressure is still the same, and depends on the temperature, like any CO2 gun.... the cartridges are a close fit inside the tube, so really the only significant extra volume is at the ends of the cylinders.... You still have 24 g. of CO2 (12 per cylinder)….

Bob

Actually I see that as an advantage myself, being that everything is warmed up after each shot much quicker I would think would conserve on co2 if you're going to be shooting multiple shots and with a gun like that it's hard not to shoot more than one shot.  Also you can fill that gun, leave it sit for about as long as you'd like and it wouldn't hurt a things as far as seals go.  New co2 guns like many of the replica guns you can only take a couple shots whereas with my Crosman 150's I'll go 10 shots and it barely cools down.

[Jim Holmgren]

A fine handgun for sure!

Would be nice if someone made a pistol grip trigger group for the QB's, huh?....

Bob

You could make a pistol grip with the stock QB trigger group, the grip will however be placed further back...

[rsterne]

Yes, I was thinking of a proper pistol grip trigger group, like the PRod setup, where the sear is further back relative to the trigger, and hence the grip further forward on the main tube....

Bob