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Old 10-03-2010, 06:53 PM   #3 (permalink)
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dukie's Avatar
Join Date: Apr 2008
Location: Kitchener, Ontario

Fan of EMR
Originally Posted by sonixr7 View Post
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.
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