Hi Guys,
I just got a Benjamin Marauder a week ago and its pretty damn cool but I had a couple of questions about it cause it's my first PCP.
First, I read the manual and know how to physically do it, but I'm not all that sure on how to calibrate the hammer stroke and preload to match the velocity. It states in the manual that they have to be set in each direction in order to match up and I know which directions to go but I'm uncertain of a lot of things. Since I don't have a crono, I can't see how my adjustments are working. I haven't adjusted it yet and it's still at the factory defaults, but I was wondering if anyone had marked down some settings that work well.
I'd also like to know if each setting that could be calibrated worked in the same ranges with the other. By this I mean, it states in the manual that you can turn in the hammer stroke I think 6 revs and the preload 12. Would this mean if I tighten it to the max setting in the direction that would increase the velocity, would they match up? Assuming the them all being tighten down would be the highest velocity, would all of them being down at the max be the max?
If none of these are available, maybe someone knew how much of a turn in the appropriate directions make how much of a change in the velocity. It was my understanding that just adjusting the velocity under the stock wasn't enough to effectively change the velocity of the rifle, and that the preload and hammer stroke had to be adjusted aswell.
Lastly, my Benjamin Hand Pump seems to make a noise when I get to the bottom of the pump stroke. I was told by a guy at the range that PCP pumps are supposed to be silent excluding any noise of air being pushed in the tank, but that the pump itself shouldn't make a noise. Is this correct information or is this sound normal? At factory defaults I was able to do 20-30 shots and I went down from 2500 to 2000 psi.
Thanks