Ghost BRK Ghost Review

[Franklink]

That's wild!!....I didn't expect to see such a fps jump (esp for the 28gr grands) from Min to Max with such a low reg pressure? Thanks for sharing

It's that situation where the transfer port and bore size of the .177 are the power limiting factors. There's such a small fps difference between min and max with the .177 barrel because hitting the valve harder just can't overcome the power limiting factors. Hitting the valve harder is a waste. BUT the larger port, larger cross section of the .22, and 6 extra inches of barrel, all combine to make more efficient use of the theoretical same amount of air. ("Same" being the pulse of air leaving the valve, due to the same reg pressure and same hammer tension.)

There's other interesting information in there too.....compare the JSB 20.83 to the lone JTS pellet. The JTS, being heavier, should be producing more energy than the 20.83, as the trend for the rest of the data table shows. But the hard lead and oversized head of the JTS is robbing us of some energy ..as hard lead+oversized heads always will.

 

[Franklink]

Barrel swaps, and how they affect poi...

Took the opportunity last night to run some tests.

Ghost is sort of in test bed format right now, so scope zero and dope wasn't great. I held all on the same spot to mitigate that zero being slightly left and low.

41 yards.
Started with the .22 barrel, five shots with .22/18.13, then five shots with the .22/20.83.
Barrel swap to .177 and then five shots with the .177/10.34.
Barrel swap back to .22, five shots with .22/18.13, then five shots with the .22/20.83.

Here are some screen grabs from the end of the video...
I think that would be 25 shots. And all but the first .177 are touching the rest, with a group size that'll just about fit under the pad of my thumb. Had some wind currents and not wasting a couple shots right after the swap that messed with the .177. Gun is capable of better accuracy, this was mostly a proof of concept to see what barrel swaps do to scope zero.




And here's the one-take, no editing video for the little 24 minute shooting session. I'm well aware it's gonna be pretty boring unless you're invested in effects of barrel swaps, there are two live barrel swaps in that 24 min that show the ease of swapping caliber.

To view this content we will need your consent to set third party cookies.
For more detailed information, see our cookies page.

Accept third party cookies

 

[Danman]

I was going to throw shade for same poi with the 18.13 + 20 lights but I now remember, it was my S510 @40Y which was about a solid 1 inch drop with the lights vs 18.13gr (she shoots 18.13 @880fps on max) My Ghosts state of tune (still as I bought it @165bar) can't shoot either of those ammo choices even on minimum accurately. Thanks for doing this, do you think you .20 barrel would have been right their with the other 2 calibers in the group with same hold? 20-min video to swap barrels twice, & single load that many pellets in the dark ain't bad! Thanks, and if anyone is in doubt now....
Currently my reg gauge (or reg!) is @175B now, so I will verify what's up with chrono soon hopefully!

 

[Solo1]

I was going to throw shade for same poi with the 18.13 + 20 lights but I now remember, it was my S510 @40Y which was about a solid 1 inch drop with the lights vs 18.13gr (she shoots 18.13 @880fps on max) My Ghosts state of tune (still as I bought it @165bar) can't shoot either of those ammo choices even on minimum accurately. Thanks for doing this, do you think you .20 barrel would have been right their with the other 2 calibers in the group with same hold? 20-min video to swap barrels twice, & single load that many pellets in the dark ain't bad! Thanks, and if anyone is in doubt now....
Currently my reg gauge (or reg!) is @175B now, so I will verify what's up with chrono soon hopefully!

Yea you have to drop that reg pressure. My 25 is throwing 34 aea pellets pw 5 135 bar 885 fps

 

[Franklink]

I was going to throw shade for same poi with the 18.13 + 20 lights but I now remember, it was my S510 @40Y which was about a solid 1 inch drop with the lights vs 18.13gr (she shoots 18.13 @880fps on max) My Ghosts state of tune (still as I bought it @165bar) can't shoot either of those ammo choices even on minimum accurately. Thanks for doing this, do you think you .20 barrel would have been right their with the other 2 calibers in the group with same hold? 20-min video to swap barrels twice, & single load that many pellets in the dark ain't bad! Thanks, and if anyone is in doubt now....
Currently my reg gauge (or reg!) is @175B now, so I will verify what's up with chrono soon hopefully!

Yeah, the .20 barrel would have been within that same cluster of shots.

For why the .22/18 and .22/21s were same poi.....I dialed in a couple clicks more hammer tension for the heavier pellets.