Impact m3 not cocking

Yes- and by details we need ALL the details. Did you add a slug power kit, etc, because by your description all I see swapped out is a barrel and a pellet probe, which to me means no fasteners on that top plate were removed, no disassembly of the valve knob and removal of the C1, no removal of the cocking block/rod/and pellet probe carrier.

Please fill us in
 
Ok, here goes.
I bought the gun used .
It was an M3 non powerblock 22cal compact. I sent it back to FX because reg.#2
Was leaking. while it was there i ordered an 800mm 30cal barrel and tensioner so i called fx and asked them to install a powerblock and that i had the 30cal Barrel intentioner ready to install so if they could tune it for that setup.
The person i talked to at fx said i should get between 900-950fps w/a 62gr Nielsen slug instead I'm getting 732 w/a 47.2gr Nielsen slug that's only 56 fpe
Done!
If you have a 100bar on the second reg.. then yeah.. it's barely Gunna get a 47g out the barrel. Turn up the second reg to 150
 
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Wow! Just going up to 150 will give me that much more power?
Nsboost is correct 100 bar isnt enough , Id crank up regs to 180/150 to start tune and may have to use heavy weight hammer or atleast install power slug kit
LOU


This. 150bar on the second reg is about as far as you will be able to go with the stock weight hammer. See where that gets you.

If 150bar still doesn't get you the speeds your looking for, your Gunna need a heavier hammer/spring. But trying raising the bottle reg to 180bar and second reg to 150bar as Jw suggested. That's a SUBSTANTIAL increase and might get you into a usable speed range

I'm not really big on the slug power kit though.. I could take it or leave it.
 
I'd be happy with 100 FPE out of the 47.2gr slugs. Would I be able to get that just by tuning without heavier hammer? At some point I will do the tungsten hammer because I actually bought this gun for coyotes and at some point I'd like to be around 130 FPE for a Humane kill.
I've dropped coyotes dead in their tracks with 70fpe. Don't get to hung up on power

Just turn up the regs and check. Report back. It Takes about as long to do that as it has for you to write the last two replies
 
I'd be happy with 100 FPE out of the 47.2gr slugs. Would I be able to get that just by tuning without heavier hammer? At some point I will do the tungsten hammer because I actually bought this gun for coyotes and at some point I'd like to be around 130 FPE for a Humane kill.
You'll easily get 100fpe without changing any parts.
 
I dropped lots of yotes (18 to be exact with a 22 cal 2 with a 25 cal and 4 with a 30 cal ) as well with my R5 22 cal using my casted MP slugs but he is trying to shoot 46 gr , so my guess 46 gr around slug speed to be somewhat accurate in the 940 fps range it needs to put out around 90fps ,I just dislike running a impact reg at hi pressures say 180 bar the harmonics go downhill and also shot count ,

Hey for heck of it why the 46 GR? are you hunting yotes? I know the 34 gr hit very hard and you dont need nearly as much power and they ultra stable and solid round nose which I love for yotes , I prefer them to them hollow points , but this is me
Hey Glem did you try the 800 mm barrel ?

LOU