Ghost .25cal Ghost tuning question

[Corvid_Hunter]

I have a .25cal Ghost inbound and was wondering if anyone had been tuning it for the 33.49gr JSB's at a lower reg pressure. I had no problem getting good velocities with my Impact at around 110 bar and it was pleasant to shoot. Not sure if the Ghost will behave in a similar fashion. I will be getting the spring kit soon.

 

[Solo1]

I have a .25cal Ghost inbound and was wondering if anyone had been tuning it for the 33.49gr JSB's at a lower reg pressure. I had no problem getting good velocities with my Impact at around 110 bar and it was pleasant to shoot. Not sure if the Ghost will behave in a similar fashion. I will be getting the spring kit soon.

I shoot them to 930 i believe with 135 or 140 bar id have to look but in my opinion 130-150 bar is where the ghost really likes to shoot. I was shooting my 177 at 80 for a while but could only vary speed with reg moved it to 135 and i got a couple more shots and lots of tuning on the wheel

 

[Corvid_Hunter]

Thanks for the reply. Are you using the factory spring that came with it? It sounds like it's going to be a little different to tune than the Impact. But that is not necessarily a bad thing.

 

[Solo1]

Thanks for the reply. Are you using the factory spring that came with it? It sounds like it's going to be a little different to tune than the Impact. But that is not necessarily a bad thing.

Yes my 25 is factory stock and yes its best to forget most of what you learned from the m3. The ghost is much easier to get set up to where you want ( not quite as powerful stock as s m3) but close and i find it to be much easier to shoot. I think you’ll be happy except now you'll realize that you wish you had better ammo!

 

[Corvid_Hunter]

Yes my 25 is factory stock and yes its best to forget most of what you learned from the m3. The ghost is much easier to get set up to where you want ( not quite as powerful stock as s m3) but close and i find it to be much easier to shoot. I think you’ll be happy except now you'll realize that you wish you had better ammo!

I was using the M2, so tuning this one should be even easier. What ammo do you recommend? I'll likely get the slug barrel down the road.

 

[Solo1]

I was using the M2, so tuning this one should be even easier. What ammo do you recommend? I'll likely get the slug barrel down the road.

Jsb 34’s their pretty good.
I have a m3 also and prefer the ghost. It just seems to do everything more easily except for slugs. Im currently having a slug barrel machined for mine.

 

[Danman]

Yip same boat here, excellent gun so far, ammo choices not so great, she likes the heavy stuff. You get it from AGS Corvid Hunter? Travis mentioned to me last week the spring kits and possibly .22 slug barrels are on route. Lee Unsworth here on Ham did a quick video with his 30cal and swapping through each spring in the kit. Very cool, hope the gun is good for you! Can't speak to the impact much but yes, to me it's the perfect balance when u want to adjust and tinker but not get lost . I was gonna go Fx M3, very glad I didn't.

 

[PasadenaMike]

It’s the perfect gun for just shooting and some tuning not spend a whole weekend turning dials and knobs to crack the combination on a safe not to mention tons of pellets and air

 

[Corvid_Hunter]

Jsb 34’s their pretty good. View attachment 5241
I have a m3 also and prefer the ghost. It just seems to do everything more easily except for slugs. Im currently having a slug barrel machined for mine.

Absolutely nothing wrong with that group.

 

[Corvid_Hunter]

Yip same boat here, excellent gun so far, ammo choices not so great, she likes the heavy stuff. You get it from AGS Corvid Hunter? Travis mentioned to me last week the spring kits and possibly .22 slug barrels are on route. Lee Unsworth here on Ham did a quick video with his 30cal and swapping through each spring in the kit. Very cool, hope the gun is good for you! Can't speak to the impact much but yes, to me it's the perfect balance when u want to adjust and tinker but not get lost . I was gonna go Fx M3, very glad I didn't.

Yes, I did order it from Travis.

 

[Solo1]

I’m quite shure you will enjoy it when you get it! Once you do if you have any other questions don’t be afraid to ask someone here is always willing to help and there is a whole lot of info here already. Good luck with the new !!!!

 

[Corvid_Hunter]

The rifle arrived today. Impressive fit and finish. I'll get a scope on it and take it out next week to sight it in and get some chronograph numbers.

 

[Kirk Thomas]

The rifle arrived today. Impressive fit and finish. I'll get a scope on it and take it out next week to sight it in and get some chronograph numbers.

I just got the email from UPS that mine (.25) was delivered.
Guess what I'm doing tonight?

 

[Corvid_Hunter]

I just got the email from UPS that mine (.25) was delivered.
Guess what I'm doing tonight?

I had some time this afternoon so I took the barrel off and gave it a good cleaning then pushed some pellets through it with a wooden dowel. It was initially tight at the throat and then smooth the entire way till the choke. Seems like it is a very nice barrel. I put my Midas Tac on it and had it more or less on target within 1 mag. I'll fine tune it next week on paper shooting from a bench. All in all, I would say it's a very nice rifle and a definite upgrade from my Impact MK2.

 

[attk11]

So I just got my ghost last week. The factory setting for my .25 cal is 165 bar on the regulator. I’m going to try to attach a couple shots strings. The first shot string I was shooting JSB 33.95 gr pellets. I started at minimum (755 FPS) and then jump to 2,4,6,8,10,12,14,16, 18, Max. You can see from the notes how many shots I did at each setting. I noticed that once I got to setting 16 the FPS would not increase past 950-960 FPS. The gun sounded like it was blowing extra air too.

I then did a 70 shot string on setting number 2 (842 FPS Avg). The gun started at 250 bar and when I was finished, it was at 155 bar. One thing I did not see was a big drop in FPS when it fell off the regulator. I thought that shot 51 was doing that when it dropped an inch low but when I looked at the speed on the chronograph, it fell in line with, the other shots.

I thought I had read somewhere that BRK sets up the ghost with a higher regulator pressure because that’s where the gun is more efficient and gives more of a feet per second spread with the power wheel (i.e. 755-950 FPS).

In the past when shooting my other PCP’s, I would notice that the FPS would drop once I got around the reg setting.

Living in Canada where suppressors are not allowed, I like to keep my FPS lower to keep the sound down. I read somewhere where a guy had best results with the JSB 33.95g at 850 FPS

55 Yards, 5 Shot Groups, Squares are 1":

 

[hameditor]

So I just got my ghost last week. The factory setting for my .25 cal is 165 bar on the regulator. I’m going to try to attach a couple shots strings. The first shot string I was shooting JSB 33.95 gr pellets. I started at minimum (755 FPS) and then jump to 2,4,6,8,10,12,14,16, 18, Max. You can see from the notes how many shots I did at each setting. I noticed that once I got to setting 16 the FPS would not increase past 950-960 FPS. The gun sounded like it was blowing extra air too.

I then did a 70 shot string on setting number 2 (842 FPS Avg). The gun started at 250 bar and when I was finished, it was at 155 bar. One thing I did not see was a big drop in FPS when it fell off the regulator. I thought that shot 51 was doing that when it dropped an inch low but when I looked at the speed on the chronograph, it fell in line with, the other shots.

I thought I had read somewhere that BRK sets up the ghost with a higher regulator pressure because that’s where the gun is more efficient and gives more of a feet per second spread with the power wheel (i.e. 755-950 FPS).

In the past when shooting my other PCP’s, I would notice that the FPS would drop once I got around the reg setting.

Living in Canada where suppressors are not allowed, I like to keep my FPS lower to keep the sound down. I read somewhere where a guy had best results with the JSB 33.95g at 850 FPS



View attachment 5455

Thanks and welcome to the HAM Community

 

[PasadenaMike]

Where your gun stopped increasing velocity at 16 note the velocity and drop it by 3-5% that’s your regulator sweet spot. Any more heavier on the hammer spring adjuster it’s wasting air. Welcome by the way

 

[PasadenaMike]

If you need less velocity in the sweet spot drop the reg a bit but make sure you degas before turning the reg in. Then see where the sweet spot is again.

 

[attk11]

Where your gun stopped increasing velocity at 16 note the velocity and drop it by 3-5% that’s your regulator sweet spot. Any more heavier on the hammer spring adjuster it’s wasting air. Welcome by the way

Thanks, so if I want to aim for 850 FPS turn the regulator till I hit 893 then roll the power wheel back till I hit 850? Have you heard of BRK using hi regulator pressures for a reason? When I had my M3 I had the reg down at 90 bar shooting the 33.95's at around 880.

 

[attk11]

If you need less velocity in the sweet spot drop the reg a bit but make sure you degas before turning the reg in. Then see where the sweet spot is again.

lol thanks I was typing my other reply as you posted this.