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What was the condition of the o-ring you removed? Was it obviously nicked or extruded or otherwise deformed?

I think Phil’s tuner is well worth the money, really simplifies tuning. I found the power wheel steps were too large a change in fps. He has videos and charts for all calibers, barrel lengths and pellet weights.

I’m assuming the second sound is from the pellet hitting the target? Are you just hearing the reg refill the plenum after the shot?

Those are the trigger springs, they are very small and soft. Similar to old AFX slot car brush springs, if you are old enough to remember those.

I would try pulling the knurled adapter from the valve and check for restrictions or an extruding o-ring?

I used these shim washers to adjust where the gauges fall on my Prophet bottle.

Skout Epoch?

Hmmm, it’s 2:38 am and you have stumped my tired brain, but you have the concept and seemed to have remedied your concern. I’ll have to ponder this again after sleep and coffee, but it seems likely that I‘m thinking backwards… Indeed, I think I have the numbers backwards in my memory, in...

That slider runs into an adjustable stop, in the form of an eccentric cam that is the back of the power wheel. The higher the number/letter, the further back the hammer will travel, and the more the hammer spring is compressed when cocked. It is not attached to the wheel, but is affected by it...

You could try a torx bit of the same size, sometimes will give enough grip to remove a screw. The part your arrow points to is free floating, and does not attach to the wheel in any way. The wheel controls the hammer travel/spring compression when cocked.

Gamo Urban.22 YongHeng noise maker Umarex Origin .22 (for 1 day, returned) RTI Priest turned Prophet .22/.25 CZ barrels Crown mk2 .22 380, 500 and 700mm barrels RTI Prophet .22 LR and RPB barrels Alkin W31 mariner vert Skout Epoch (birthday gift from brother!) with a bunch of different barrels...

My buddy did the same thing with his Orion Impact mag, I watched him struggle and look disappointed for a few minutes before I intervened …

I really like both JTS and AEA pellets and have been shooting them almost exclusively. The one downside I’ve found is that they foul my barrels much faster than the European pellets. The lead, while harder, seems stickier than others, and requires more frequent and aggressive cleaning for me.

Yes, those numbers seem to be used interchangeably to describe the same size bottle.

This has always been been a contentious subject. Some claim great luck with any compressor oil, or Husky synthetic compressor oil. I ran Royal Purple in my YongHeng, as recommended at first, but it literally stunk, built carbon on the HP piston and was obviously not up to the task. I’ve since...

I’m curious if you’re watching your second reg pressure between shots, to see that it’s refilling to the same point each time. Maybe wait 30 seconds between shots, and see if it evens out some.

Here is a pic of my Crown mk2 reg bore, the o-ring location will be the same in your Impact. Take care to not scratch or mar the the o-ring groove when removing the old ring.

Did you lube the pistons and cylinders with silicone when you reassembled?

The YH definitely needs a 20 amp circuit to start and run correctly. Repeatedly tripping a 15 amp breaker on startup is hard on the already overtaxed motor and start windings. These things run at the very edge of their build design and quality.

Holy cow, talk about an upgrade! Reminds me of the FX facility built in NC, and then was quickly destroyed by a greedy jackass… All the best to the Justin and company, they put on a great event every year and do much to advance the sport.