GTA
All Springer/NP/PCP Air Gun Discussion General => PCP/CO2/HPA Air Gun Gates "The Darkside" => Big Bore AirGun Gate => Topic started by: tkerrigan on October 08, 2015, 06:05:29 PM
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This just came in today, man what a monster. At 3000psi it tossed a 50.02 pellet at 956fps. It can be filled to 3800psi. Looks to be accurate also. Will do some groups later after I turn it down. Regards, Tom
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We need pictures !!!
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Yes, tell us more. I'm interested in this gun. Is it shrouded?
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Here is a link to the gun. http://mrodair.com/mrodair_p-30_velociraptor_caliber_30_jsb_1000_fps (http://mrodair.com/mrodair_p-30_velociraptor_caliber_30_jsb_1000_fps)
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Not shrouded but I understand Mrodair is working on one. Will do some more shooting and take pics today. Regards, Tom
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I put it on a regged bottle and using 45gr pellets 1800psi - 827fps, 2000psi - 854fps, 2200psi -878fps, 2400psi - 904fps, 2600psi - 922fps, 2800psi - 942, 3000psi - 958fps, 3200psi - 971fps, 3400psi - 976fps, 3500psi -965fps then just turned hammer spring in one turn 981fps, then a bit more 988fps. At this time the bolt started seizing up, it turned out to be the paint inside the receiver at the start of the probe rearwards about 5/8" was too thick. I ended up turning the bolt dia. down about .002" where the paint was rubbing off. That made it all just fine.
Shooting off the air tube resulted in the following
3300psi fill 966, 968, 969. 972, 958, 956, 953, 952, 937, 933, 924, 917, 907, 901, 887 2300psi ending. It's a little hard to get the sear to fall into the hammer, so I will lengthen the hammer draw slot about .050" next time apart. Regards, Tom
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Group time. 50 yards, 44.75 JSB, 2800psi, 950fps, 5 shots = .87 group
50 yards, 50.15 JSB, 2800psi, 920fps, 5 shots = .95 group
Same group 4 shots = .49 group
I'm 68, the table is a bit shakey, I think that with a good rest these groups could be improved on quite a bit. Regards, Tom