As the title suggests I want to get a huma regulator to increase the power of my MKII which is shooting 33.95s @ 800 FPS right now. I want to know if at any pressure is 1000 FPS possible (75 FPE) and around what pressure would that be? Thanks
Huma regulated FX Wildcat MKII .25 75 FPE Possibe?
- Thread starter DarkRattle
- Start date
It's not a matter of more pressure will always increase power. In fact when the plenum pressure get's too high, say over 150 bar the power and velocity will actually drop. If you want more power you will have to expand the diameter of the ports to about 85% of bore to allow more air flow from the valve all the way to the back of the pellet. Unless you have machining skills it's a job better left to a qualified smith.
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Short answer is: Not without extensive modification.
What would it take to achieve that? Ports @ 90% of bore (.225" + ), regulated pressure around 162 bar, 23.5" barrel and 60 cc's of plenum would be ideal.
Reducing plenum to 30 cc's requires around 170 bar on the same setup. Reducing ports to .19" and plenum to 30 cc's requires roughly 200 bar.
a 700mm barrel would get you there much easier...170 bar @ .19" ports 30 cc's, or 162 bar .19" ports 60 cc's, or 140 bar @ .225" ports 60 cc's. As you see big ports, long barrels and big plenums help a lot.
-Matt
What would it take to achieve that? Ports @ 90% of bore (.225" + ), regulated pressure around 162 bar, 23.5" barrel and 60 cc's of plenum would be ideal.
Reducing plenum to 30 cc's requires around 170 bar on the same setup. Reducing ports to .19" and plenum to 30 cc's requires roughly 200 bar.
a 700mm barrel would get you there much easier...170 bar @ .19" ports 30 cc's, or 162 bar .19" ports 60 cc's, or 140 bar @ .225" ports 60 cc's. As you see big ports, long barrels and big plenums help a lot.
-Matt
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IMO any pellet flying at 1000 fps would be very unstable and would be very inaccurate. If your goal is 75 ft/lbs, I would suggest looking at shooting heavier bullets. A bullet weight of 50 grains pushed to 830 fps would get you your 75 ft/lbs. The wildcat barrel is not designed to shoot cast bullets so you would have to machine a barrel made to shot bullets
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Get a slug liner and heavy slugs from NSA. Then an Huma reg and crank up the hammer spring. Start slow and work your way up. Pellets don't like going above 900fps much they will fly everywhere.
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Hey dont want to make a new thread so I rather just extend this one, what's the maximum power you can get out of a huma without boring stuff out, regulator only?
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You really need a heavier hammer weight to take advantage of some extra reg pressure. Had a buddy spin one up from copper for me. IIRC I was getting around 62 ft lbs at around 160 to 165 bar setting. But i find it most accurate between 875-880 @ 150 bar.
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Not necesarily.
My WC 25 was pushing the 25.4gr pellets through the ST-X liner at 953fps average, and doing about 1.5" at 100 yds.
Also, Ernest has pushed the 18.1gr pellet over 1,000fps with excellent accuracy.
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Not necesarily.
My WC 25 was pushing the 25.4gr pellets through the ST-X liner at 953fps average, and doing about 1.5" at 100 yds.
Also, Ernest has pushed the 18.1gr pellet over 1,000fps with excellent accuracy.
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I ordered the huma and had it preset to 160, whatever I get I'm happy with knowing it's constantly over 50 fpe haha.
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You'll get over 50fpe easy with the Huma. I was at 53fpe with the reg at 150bar.
Best of luck!!!
Best of luck!!!
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