I ordered the Standard AEA Challenger 35 cal with a 24" barrel this morning from AEA Airguns USA, it was a little pricey for the shipping at $65 and it came to $519. I've also got a 35 cal pellet mold coming from NOE for it.
I just looked at a FB post ,about a 30 cal challenger with a regulator and plenum, the guy was getting very consistent fps for quite a number of shots, appears to be a foreign country ,I'll try to share the link,unable to find link , IIRC it was quripuma, looks like the guy makes stocks for airguns, would like to find out where he got the reg.
Quote from: Ironman482 on April 27, 2021, 08:19:06 PMI just looked at a FB post ,about a 30 cal challenger with a regulator and plenum, the guy was getting very consistent fps for quite a number of shots, appears to be a foreign country ,I'll try to share the link,unable to find link , IIRC it was quripuma, looks like the guy makes stocks for airguns, would like to find out where he got the reg.If one wanted to regulate a Challenger, the process is quite simple.You can order a custom huma, all you need to know is tube ID. Then make a plenum spacer and drill the tube for a vent. That's how I regulated my Bulldog and a couple of other guns prior to a "kit" being made available commercially.
Quote from: mackeral5 on April 27, 2021, 09:33:14 PMQuote from: Ironman482 on April 27, 2021, 08:19:06 PMI just looked at a FB post ,about a 30 cal challenger with a regulator and plenum, the guy was getting very consistent fps for quite a number of shots, appears to be a foreign country ,I'll try to share the link,unable to find link , IIRC it was quripuma, looks like the guy makes stocks for airguns, would like to find out where he got the reg.If one wanted to regulate a Challenger, the process is quite simple.You can order a custom huma, all you need to know is tube ID. Then make a plenum spacer and drill the tube for a vent. That's how I regulated my Bulldog and a couple of other guns prior to a "kit" being made available commercially. I've never understood the part about drilling the tube for venting, is that done between two orings on the reg, and once that's done I assume there's no going back to unregulated, is that correct?
I noticed in the dozen or so times I've taken mine apart and put it back together that where the air tube meets the rest of the rifle at the transfer Port it's just bare metal on metal contact and nothing solid there to really hold pressure in very well. Basically a round hole in a square block and another round hole in the tube and the tube is bolted onto the block with the block having a half circular shape where the tube bolts on to it. If there were o-rings in there I'm sure it would hold pressure a lot better when it is fired or at least more air pressure would reach to the projectile because the way it is made air has to be escaping there every time you fire a shot
I'm thinking with a big bore like my Standard Challenger in .357 that regulating it doesn't appeal to me as opposed to a good bell curve. The way that mine is shooting right out of the box it acts like it's a good 8 shot bell curve the way that it's shooting from a 3600psi fill.
I tried a new hammer spring today , a 12# one from McMaster Carr part # 9647K454 , it's still lighter than stock so easier to cock , especially with the bull pup , here's a 6 shot string ,forgot to load 8, this is at 3500 psi ,it's about 40fps faster than my tune with the 10 # spring at 3150 psi,1st 3 shots are very consistent, anyway thought I'd share, PS I have 3 extra springs if anyone wants one.