Brocock/BRK Ghost collaborative data request

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robertwalsh1981 said:
BRK Ghost .22 HP 23" Barrel
Reg = 110 BAR (Digital Gauge)
White hammer spring

==================================

JSB Hades Monster 25.39 gr PW=MAX 881 FPS avg.

Shot count: 5
Low: 880
Hi: 881
Avg: 881
STD Dev: 0
Spread: 1

4/20/25 7:45:41 PM,881,FPS,43.8,FT Lbs,
4/20/25 7:45:46 PM,880,FPS,43.7,FT Lbs,
4/20/25 7:45:50 PM,881,FPS,43.8,FT Lbs,
4/20/25 7:45:54 PM,880,FPS,43.7,FT Lbs,
4/20/25 7:46:02 PM,881,FPS,43.8,FT Lbs,

==================================

FX Atomic 15.9 gr PW=7 974 FPS avg.

Shot count: 5
Low: 968
Hi: 982
Avg: 974
STD Dev: 5
Spread: 14

4/20/25 7:46:27 PM,982,FPS,34.3,FT Lbs,
4/20/25 7:46:31 PM,968,FPS,33.3,FT Lbs,
4/20/25 7:46:36 PM,972,FPS,33.6,FT Lbs,
4/20/25 7:46:40 PM,975,FPS,33.8,FT Lbs,
4/20/25 7:46:44 PM,971,FPS,33.5,FT Lbs,


Not the greatest groups, but this was literally swapping back and forth between pellets and PW adjustment without additional shots to let anything settle in. I filled my magazine with 5 of each pellet. The first 5 shots were the JSB, the last 5 were the FX Atomics. There is some obvious POI shift between the two pellets, but with enough practice to know where that is, I can either adjust my scope or hold off for it.

View attachment 556863
Click to expand...
Thank you for the input!
I've also noticed my ghost likes 3-5 shots to settle back in after making changes.
Has anyone else noticed this?
 
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I just got a 30 cal ghost and this is my 3rd. Tony at talon had it tuned for 50 jsb @920 150 bar pw max 94 fpe I needed it below 80 fpe with pellets so i turned the reg down to 120 bar and went with a red hammer spring cause it didn’t sound happy with the black on pw2 That gave me this on pw 16
IMG_5170.jpeg

This is just below 80 sighted in with 8 shot 1 ragged hole @40 from Styx and a 2” group of 8 @100 from styx. Fx 44.8 bc was .044. No that ive made my other adjustments ( grip, butt pad , took out cheek riser) im ready to go head to head with my 25 from the bench and see which is better. Have to try to find some aea 45 grainers too
 
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cavedweller said:
I’m trying to create a cheat sheet for the FAC Ghosts when wanting to change calibers or barrel length and or pellets efficiently.
I have ALL barrel(s) lengths and calibers, including a .20 available to me.
I want to hear from folks who have found the perfect combination of:

Regulator pressure used for that caliber and barrel length
hammer spring installed
Power wheel setting (s)
pellet type/weight
resulting speed fps.
you can include slugs if you like but be very specific as not that many slug shooters "yet".

Thanks in advance

And why didn’t BRK think to do this???
Surely someone has??
Click to expand...
@_CTAIRGUNNER_
 
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cavedweller said:
@PowderBurnt - what is the scoop on your ghost?
Click to expand...
AoA hasn't sent the barrel back yet, but I'm starting to wonder if it was both of the scopes that I tried on my Ghost. When I broke one of the scopes on my s510, then put on a new scope, it started putting pellets side by side.

I suspect that they will tell me there's nothing wrong with the barrel very soon. Don't over tighten your scope rings! That's what I learned.
 
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PowderBurnt said:
AoA hasn't sent the barrel back yet, but I'm starting to wonder if it was both of the scopes that I tried on my Ghost. When I broke one of the scopes on my s510, then put on a new scope, it started putting pellets side by side.

I suspect that they will tell me there's nothing wrong with the barrel very soon. Don't over tighten your scope rings! That's what I learned.
Click to expand...
Yea don’t overtighten any barrel grub screws either. You can actually dent the barrel
 
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PowderBurnt said:
AoA hasn't sent the barrel back yet, but I'm starting to wonder if it was both of the scopes that I tried on my Ghost. When I broke one of the scopes on my s510, then put on a new scope, it started putting pellets side by side.

I suspect that they will tell me there's nothing wrong with the barrel very soon. Don't over tighten your scope rings! That's what I learned.
Click to expand...
Ouch - that’s an aggravating and potentially expensive lesson! I only buy super quality rings and never go past 18 inch pounds or mfgr recommended.
i no longer use eaglevision adjustable rings as once torqued they are meh…
:rolleyes:
 
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