The Air Arms S200 and the Lancet Mk9 regulator - A work in progress 

Thanks for that. Currently I have the reg set at 79 bar and it seems to be working about right with the 3.5mm transfer port. The hardest thing that I was finding was powering the bloody thing below to 12 ft/lbs. Ideally it seemed to like around 12 ft/lbs tune or just above, but loved 17 to 18 with just a 3 ft/p/s spread, but not having FAC had to struggle to get it to where it is now. My exhaust valve is shimmed but still needed to go all the way in and then out by just under 1 full turn. I've used two tins of pellets to get there and over two hours of compressor use between draining and topping up the cylinder. If I get any more problems I could drill out the transfer port more, but that would probably increase the power, what do you think?

Yes, already been down to 80 and 5 bar incriments up to where I am now. It stated on the paperwork to set at 105 bar, which I started off with. In another video on the same rifle he had set his reg at between 122 and 124 bar to get 90 shots and it also dropped off at 80 bar. A lot of the differences between a standard rifle are with the transfer ports being opened up, which then gives more power and a drop off at around 80 bar with the current tranfer port and valve and hammer settings. I will probaby drop down to 115 bar, as It's about the only one that I haven't tried yet. It certainly is a time consuming process.

@@airgunsniper-elite7385 waiting for your next video to see the results

Just to add (sorry it was lengthy reply)I'm using a Mamba Lite 3-12x44 in high mounts and JSB 15.9 grain Hades .22 pellets.Gun is quieter more accurate than previously and the 80 shots are good and consistent.

It will come off you need a special tool from Robert Lane Regulators a good metal vice a big adjustable spanner and a decent hammer.Also join the Air Arms Owners Group in UK very good info.

@@tonyashton780 thx!

@@leftymadrid your welcome Mark does show on one of his many S200 videos the tool and how to use it.Altaros cylinder one and fitting the mk9 Lancet Regulator.Glad you got sorted.

Definitely so. It's been a pain in the arse up until now. It's working out what the best setting is. In theory you can get a similar result from various pressures from the regulator when balanced out with the exhuast valve and hammer spring. I've been through this process before, and it get very anoying. You can increase the power of the hammer spring and get a lower power reading, rather than higher, which is the norm. If you don't adjust the strength of the valve spring the valve opens too easily and at a full fill of the cylinder you can get really high readings if you don't balance the valve. At the other end, unless you balance the stength of the hammer to the valve, as the pressure drops off the regulator and you can get a power spike as the valve is opened easier to the hammer strike. I am testing it initially at about 15 bar above the regulator pressure, then shooting it down to make sure there are no power spikes. When I have done this, I then do a full fill to see if the power is any different on a full fill to make sure the regulator is working. Strange thing is I am getting some nice results, then suddenly there will be a high or low shot or two. I am not sure wether to buy a new hammer spring and valve spring, just in case they are worn out. Apart from keep trying, it's the only option that I can think of. The Altaros was easier to do, I may just service that and try that again if I have no joy. I'll keep you upto date with my progress.

@@airgunsniper-elite7385 ok,hope you can get it sorted i know air rifle tuning can be annoying at times,its all about fine tuning as you say,good luck,nice informative vidieo.👍

Yes, in .22 you should be able to achieve that with a full powered rifle.

@@airgunsniper-elite7385 Many thanks sir, i did not imagine that the small air arms s200 could fire at nearly 40 joules; the mine is an ordinary 12 ftlbs: do you recommend installing a regulator? or that's better to keep it as is? more than the regulator's price, what scares me a bit is all the job of fine tuning needed

@@0XAN You don't need a regulator, as the rifle is very efficient, although it would benefit from a regulator giving more consistent shots per charge. The hardest part about fitting a regulator to an Air Arms S200 is removing the exhaust valve from the rifle, as you will need a special tool to remove it and a vice. The tools can be purchased for £10 to £15 and the regulators will cost between £70 and £90 depending on which one you buy and if you want an internal or external one. With the external regulator you will get a few more shots, due to the cylinder not being filled with the regulator and taking up air. The regulator then needs fine balancing between the exhaust valve spring tension, choke and the hammer spring. The other option would be to have the rifle professionally tuned which will probably add another £100 to the cost, but if done by some where such as the Rat Works, Phill will also tweak other parts of the rifle at the same time.