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You might be right. Only RTI knows :) The longer cilinder and smaller piston makes me think the valve will be a bit easier to fine tune. Just guessing. The Mora certainly looks like its build to withstand the test of time. Its beautifully engineerd and well build. Keep us posted on you...

Your welcome! Good to read that you finally get the results you are looking for. Very interesting to see a complete redisigned valve system. Longer spring, longer valve cilinder and smaller valve piston. Also different material valve seat. Wonder why RTI did that. I have zero issues with the...

Bumping up the reg pressure doesn't have to mean lower shot count. A higher reg pressure means there is less time needed to get the projectile up to speed. Which translates to a shorter dwelltime and less volume of air under pressure used To take out he valve assembly you can do it like this...

Here are a few pics of the valve assemble to help you out If you need more pictures or clos-ups. Just ask. I made a lot of pictures for future reference when i need to trouble shoot my own Mora

If upping the reg pressure or lowering the hammer spring tension isn't working i am thinking about as few causes that could affect the velocity. - leaking probe O-ring. The know for sure. Single load a pellet/slug. Close the cocking handle completely and keep your finger on the probe during the...

Just a thought. My Mora is shooting 37gr .25 slugs at 980fps on a 134bar reg pressure. Its known that the same weight slug/pellet in a bigger caliber requires less pressure but more volume then a smaller caliber due to its bigger surface area. (Same pressure on a larger surface means higher...

Thanks :)

Did anything else also change on the Mora? I've seen Mora's with a shorter cocking handle, different grip, shorter or shifted shroud and different endcap on the muzzle. As far as velocity dropping when opening the valve dwell time screw. For as far as i know this shouldn't be possible with this...

I don't know. But the LOP of my Maverick is at about 30cm (12inch) for me that is more comfortable. I think it's more of a personal preference. Both my Mora and Maverick have their pro's and con's when it comes to ergonomics. But across the line the Mora is the better shooting rifle for me when...

Length of pull is about 33cm (13inch)

I agree. The bottom rail isn't the most sturdy one. At least you can ditch it and mount a M-lock weaver rail on the bottom. Then you can pretty much mount whatever rail extender you like.

I have one. For about 2 months now. Pros - build like a tank and very high quality machining - very smooth shot cycle - binary valve makes it pretty ease to tune - stable regs when adjusted correctly. To big of a difference between 1st and 2nd reg will introduce reg creep. - very good balance...

The way i gained good results is by pretty much following what RTI tells you in their manual. I'll try to make a short explanation. 1. Determine your pellet/slug seating deph. In the manual it is called "head space" You should adjust the pin prode in such a way that your pellet/slug kind of...

You are correct. Of i where you i would just trust my instinct. The hammer spring in the Mora doesn't have the same function as the hammer spring in a rifle with a traditional valve. RTI calls their valve a "binary valve" within the valvestem there is a second air schannel. As soon as you hit...

Can you elaborate on the adiabatic cooling in relation to the behaviour of the regs? I needed to look for the meaning of the term "adiabatic" if i understand correctly it has to do with the expansion of a set volume of air as a result of temperature difference?

Yes it kind of is. There are more ways you can determine if the valve is closing on the right moment. When you start tuning the Mora you need to have the valve fully open. The sound output will be very high and the accuracy won't be that great. As you start closing the dwell time screw you...

The Mora does indeed have 2 regs. of which one is placed within the neck of the bottle. The manual states that it needs to have a reg pressure difference between the two regs of 20-50 bars. This makes the second reg very stable in my experience. To be able to adjust your 1st stage reg you need...