You gotta see this! FX Impact .25 with INSANE ACCURACY: Tuned by SPAW!

[UpNorthAirGunner]

I also think in my original post I mistakingly used the term "tuned" when I should have said MODIFIED and TUNED. I have seen airgunners tune their FX Impacts themselves to get similar accuracy. What Ken did to my MKI Impact to get both accuracy and increased power is something I could not do myself or would even want to try to attempt. I am a trained U.S. Army Unit Armorer with over 8 years of maintaining M4s - M9s - M240s - M2s 50 cal - but I know my limits and these things are much more like a Swiss watch inside! I would screw things up bad if I were to tear into this thing.

Ahhhh, I think that is a much better way to phrase what was done to your gun. Shooting the pellets that you are, at the speed that you are, your gun is no more ACCURATE than a lock stock off the shelf Impact that has been "tuned" by the owner per Ernest's Master Class videos. However, mods were done to your gun to allow more POWER should you want to go that route, with slugs or pellets. More than likely the additional plenum, larger valve seat and valve, hammer weight, springs, etc. that Ernest has been describing for a couple of years now. No real "secret sauce", unless there has been some sort of breakthrough that has been kept top secret in the halls of FX... It all boils down to air flow, and air speed. More air flow, more power. Simple in concept, sometimes very hard to do in practice.

Well yes and no - it may be no more accurate than if someone could tune their own stock FX Impact with a 25.39 grain pellet at 50 yards, but that same 25.39 grain pellet isn't going to be able to beat the 33.95 grain pellet at 100 yards when the wind kicks up a bit.

So there is another element to all of this that I learned through my big bore airgunning efforts that starts to come into play with pellets and relevant to this modding / tuning conversation. I should have titled this video to focus on what is truly special about what I have here - the increase of power AND having INSANE (for me) accuracy. Ken's ability to greatly increase power (above stock form) while finding the harmony of accuracy is something most of us do not have the skills sets to do and are willing to pay someone to do it for us. I know some of you are much more inclined to dig into your FX Impact and start machining parts and totally taking a factory design and modding it. The other 99% of us are not.

The increase in power isn't just for on paper FPE bragging rights either. The real value I see is having the ability to shoot larger grain weight pellets or slugs for any given caliber (sectional density) thus increasing BC and being able to shoot accurately at LONGER DISTANCES. Too many people and manufacturers for that matter are too focused on FPE in my opinion. FAST = FLAT TRAJECTORIES and furthermore being able to shoot FAST + GREATER SECTIONAL DENSITY = FLATTER TRAJECTORIES EVEN FURTHER! 

You might have seen my Airforce Texan video shooting on a modded valve with helium getting over 1000 FPE. For big bores, that does start to matter more because to get a 350 grain slug to really start doing much as far as mushrooming during terminal ballistics - the power is needed. What really excited me though about that experiment was losing over 7 inches of drop in my slug at 100 yards. For deer hunting that is basically the size of the entire vitals kill zone so I don't have to think about hold over AT ALL from my blind all the way out to 100 yards which is the furthest I would take a shot at a deer.
https://www.youtube.com/watch?v=-iD5xbHpTHo


I sometimes laugh when we as airgunners get all wound up and excited watching videos of YouTubers smacking ballistics gel and go all crazy when someone takes an airgun from 20 FPE to 40 FPE or taking an airgun from 40 FPE to 70 FPE or going from 300 to 500 FPE. That little bunny or squirrel ain't going to notice the difference because a lot of that energy just went out of the other side of that animal in a nice pink mist. With Deer - it is a different story and from what I have found when you get up and over 300 FPE you start getting the double lung passthroughs you really want and that additional FPE is needed beyond 50 yards. 

So back to these super precision smaller bore PCPs like the FX Impact. I really don't care about the FPE - I care about the combination of flatter trajectories shooting higher BC projectiles. Like I talk about at the end of my Texan .257 video I made recently, I think we get too focused on FPE numbers because when it comes to terminal ballistics for small game animals it doesn't matter all that much. Being able to hit them further away though with less vertical drop or effect of wind on our projectiles is where our focus should be. Skip to 10:44 in this video:



https://youtu.be/xOEk2A7rbsA?t=647