Originally Posted by sonixr7
Hello Dukie and fellow DRV owners, I have been shooting my DRV in my backyard and have not experienced any major problems.
I have a chronograph and was getting 270FPS on my first shot and then each consecutive shot the FPS got lower than the previous shot.
I am using a 10" stock Rainmaker barrel but I am unsure about the inner diameter. I am shooting Ultra Evil paint that measured between .678 to .682.
Do I need to use a overbore, underbore or paint to barrel match?
Will underboring increase my FPS on the DRV?
On a side note, I do love my DRV. I think it is the most fun I have had ever shooting a paintball gun/marker.
I don't know
Try them all and post some results! I can only spend so much time on it in the shop ( which is very little). On a bright note I now have a chrono that doesn't lie to me
I do get the same results of dropping speed over the course of a 12 gram. I suspect its due to cooling/pressure drop. Low shots per 12ie has a neccesary result of quickly cooling co2.
Try some electrical tape in your cylinders ( a small piece) to effectively underbore them and see what happens. I have never tried it since I was getting good speeds with the paint/barrel/cylinder match in the shop. The shop ain't a field though.