If your first reg 185 then surly it needs filling at 185 . I thought you first reg should be 150 bar and 30 bar difference to your second reg
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the Daily hi thread
DESPITE ALL MY PREVIOUS EFFORTS WITH SORTING THE FX IMPACT M3 .25CAL FAC
- Thread starter tonyshotgun
- Start date
I suppose you could shoot it down to your second reg pressure
Al Stevens
Super member
The answer to that would be,shoot a full string over the chrono to look at it's behaviour.
tonyshotgun
Busy member
They say minimum 30-40bar
tonyshotgun
Busy member
Morning all
What a gorgeous day yesterday was for zeroing and plinking about. I took the advantage and went over to my mate Chris's 3 acre plot and managed to get a blinding zero @50 yards. Also tried a hundred and managed to get a 25mm group using a ZAN 37gn slug doing 926 FPS. Success at last.
Anyway, whilst mucking about I decided to try out the ZAN 35gn slugs too. They started off a bit wild and spreading by about 1.5-2" intermittantly @50 yards until I realised that they were travelling at around 951 FPS. Turned them down to around 928 FPS and by god it was another success. So for now I've left it with the ZAN 35gn slugs. I always thought the heavier the slug the more speed required to send it accurately?
I've gotta say, there is recoil with this rifle, so the next thing on my agenda is to try and loose it as much as possible. Last night I purchased an FX Impact Arca Rail 2 - Arca Swiss from "AIRGUN 101" not (SGC
)!
I think you can add weights on the side rails to try and minimise the recoil. Ideally I bought it for mounting on a more sturdy camera bipod.
Any ideas on how to loose some of that JOLT?
What a gorgeous day yesterday was for zeroing and plinking about. I took the advantage and went over to my mate Chris's 3 acre plot and managed to get a blinding zero @50 yards. Also tried a hundred and managed to get a 25mm group using a ZAN 37gn slug doing 926 FPS. Success at last.
Anyway, whilst mucking about I decided to try out the ZAN 35gn slugs too. They started off a bit wild and spreading by about 1.5-2" intermittantly @50 yards until I realised that they were travelling at around 951 FPS. Turned them down to around 928 FPS and by god it was another success. So for now I've left it with the ZAN 35gn slugs. I always thought the heavier the slug the more speed required to send it accurately?
I've gotta say, there is recoil with this rifle, so the next thing on my agenda is to try and loose it as much as possible. Last night I purchased an FX Impact Arca Rail 2 - Arca Swiss from "AIRGUN 101" not (SGC
)!I think you can add weights on the side rails to try and minimise the recoil. Ideally I bought it for mounting on a more sturdy camera bipod.
Any ideas on how to loose some of that JOLT?
GlenBP
Super member
So glad you got it sorted. It does need some fettling to get it right, but when you do it's brilliant. 
tonyshotgun
Busy member
As a member, do you have to end a thread or can you just start another one. If so, how?
I have one those rails, although my Impact is sub-12 so the recoil is very low I can say that just being able to move the bipod right to the front makes a huge difference to the balance and stability of the whole thing. Not to mention that it gives protection to the bottle because I never felt good about resting the bottle on something to shoot. And yes if you wanted to attach things to the side rails then you can do that.Arca Rail 2 - Arca Swiss from "AIRGUN 101" not (SGC
I think you can add weights on the side rails to try and minimise the recoil. Ideally I bought it for mounting on a more sturdy camera bipod.
Any ideas on how to loose some of that JOLT?
tonyshotgun
Busy member
Top man, thanks FOXBAT
tonyshotgun
Busy member
I've just started one up about BRK GHOST.
tonyshotgun
Busy member
Hi FX shooter
Re: Impact M3
Just purchased some more H&N 32 & 34gn slugs.
Going by what you mentioned a while back regarding speeds of 950-980 FPS, does this apply to the H&N slugs in our conversation?
Also an interesting and possibly silly question I've been meaning to ask you was, if you were to switch from slugs to pellets,
- would you spin the barrel round for the pellet port if using pellets
- would you also swap over the slug probe to the pellet probe
Tony
I can’t spin the barrel round on mk2 and I still have the pellet prob
tonyshotgun
Busy member
Oh sorry, I didnt realize you had a MK2
Only way to reduce the recoil is turn the power down. Its physics opposite and equal reaction.Morning all
What a gorgeous day yesterday was for zeroing and plinking about. I took the advantage and went over to my mate Chris's 3 acre plot and managed to get a blinding zero @50 yards. Also tried a hundred and managed to get a 25mm group using a ZAN 37gn slug doing 926 FPS. Success at last.
Anyway, whilst mucking about I decided to try out the ZAN 35gn slugs too. They started off a bit wild and spreading by about 1.5-2" intermittantly @50 yards until I realised that they were travelling at around 951 FPS. Turned them down to around 928 FPS and by god it was another success. So for now I've left it with the ZAN 35gn slugs. I always thought the heavier the slug the more speed required to send it accurately?
I've gotta say, there is recoil with this rifle, so the next thing on my agenda is to try and loose it as much as possible. Last night I purchased an FX Impact Arca Rail 2 - Arca Swiss from "AIRGUN 101" not (SGC
I think you can add weights on the side rails to try and minimise the recoil. Ideally I bought it for mounting on a more sturdy camera bipod.
Any ideas on how to loose some of that JOLT?
You could spin the port around (if the rifle will take it - Crown Mk1 and Mk2 can do it, for example), but as I understand it, the massive port with the bar is for 0.30” and above. The bar just stops the chance of the pellet / slug falling out downwards as it is loaded.
The slug probe (or pin probe) puts all the air into the centre of the projectile rather than across the rear ‘evenly’ which is supposed to work better for slugs. Any of the probes and/or transfer ports will work with pellets and slugs to a degree. What is important is, do you have a STX liner or a STX heavy, the later being for slugs…
Infinite Scroller
Proactive member
Doesn’t work that way with FAC rifles
tonyshotgun
Busy member
Top Man, thanks for info,
I've got both standard and heavy 700mm STX liners both with slug and pellet transfer ports that can be spun around to suit. Exactly as shown on your HUMA AIR picture. shown on your picture
You reckon I should be alright using the slug/pin probe to shoot pellets on my Impact M3 .25cal. It's a piece of cake to spin the barrel round to select slug or pellet port. I'm also confident to swap over the probe but I'd rather not if I dont have to
I asked a question last week regarding knowing when to recharge the bottle with air. In your opinion, at what BAR pressure reading on the bottle manometer would you say is time to recharge if the following regulators settings were set to;
- first stage reg @185 BAR
- second stage reg @135 BAR
So my Crowns are sub-12 with the single reg set to ~55 bar. I see some see-sawing after filling to 250 bar (480cc bottle) to tended to fill to 230 bar. Bear with me, I’m getting there! I’ll find the graph of my Mk1 crown shooting from 230 down to 40 bar or so. The peak in fps is interesting.
On your rifle, the first stage reg is designed to give the second reg an easier time. Hence your pellet/slug is seeing the 135bar pressure when you squeeze the trigger. The easy answer is when the bottle reaches 135 bar, refill.
However, you may find that PoI doesn’t change enough for you to worry about, until (say) 110 bar. It depends on how your Mk3 is set up and how it reacts to going off (second) reg.
On your rifle, the first stage reg is designed to give the second reg an easier time. Hence your pellet/slug is seeing the 135bar pressure when you squeeze the trigger. The easy answer is when the bottle reaches 135 bar, refill.
However, you may find that PoI doesn’t change enough for you to worry about, until (say) 110 bar. It depends on how your Mk3 is set up and how it reacts to going off (second) reg.