How much slower does it shoot on CO2?
CO2 is famous for being effected by heat. How accurate is the gun on CO2?
I'm asking because I have a MRod, but I'm trying to do something for my brouther. He is 75 and can't really handle a break barrel that is in the speed range needed to kill the big rats in Floridia. Is there any other choice of guns that can run on CO2 and throw a 10 g pellet up in the 900 fps area?
Oh, and a dealer told me you have to use liquid CO2 in the MRod. That is easy enough to do by just turning the tank upside down, but it seems like a very ad idea. In paintball guns, we work very hard to keep liquid CO2 out of the guns so the valves don't freeze up. Again, dose anyone have first hand experience with this?
the M'rod can be made to work well with co2. The way it comes from the factory the trans port in the valve and up are fairly small for the gun to be at it's best using co2 for power. A better bet for bulk fill co2 would be the Disco.
As for filling, you always strive to get the max amount of liquid into the tube.
So if using P/B tanks to fill it would be neck down and the rifle butt stock to the floor.
And best if the rifle tube is colder than the fill tank.
One last thing as far as power goes, co2 tends to like .22 better than .177.
I've had modified .22 cal QB's shoot @ 800fps. With a bit of modification most .22 rifles can do 750fps on co2.