Tuning Converting Co2-Revolver to PCP
- By Jarnold
- PCP Airguns
- 27 Replies
Hi guys,
I just wanted to show a little project I did over the holidays: converting a Co2-Revolver to HPA/PCP.
As base I used a Gamo PR-776 Co2 Revolver in .177 (it’s quite a standard revolver, you can find under many labels and names). It`s one of the „typical“ 100-bucks-Revolvers, so nothing too great.
As powersource I currently use approx. 1050 psi of pressure, coming from a 26cui regulated HPA-paintballtank.
That results in pretty consistent 295 fps with a variety of just +- 8fps (you always lose fps compared to using Co2). Also, the choice of pellets seems to make a big difference in fps and energy. 8 grain pellets go up to 310 fps. I actually use 7,87 grain pellets (the Gamo has a rifled barrel). I get like 2,2 joule / 1,6 ft/lbf of energy. As I am shooting on 10 yards in my basement, this is just right. Making pretty clean holes for a airgun, but not using much gas or putting too much pressure on the system.
I still need to adjust the sights (the Gamo shooting pretty high, so I need to work a bit on that, because I actually have to aim under the target, without having a single point to aim). Still I am pretty happy with the results so far, for testing (standing free, holding with both hands). The four pellets in the hole to the right are within 5/8”.
The gauge on the paintball tank didn’t go down noticeably, even though I was testing for more than 120 shots. I think u can easily do 1000+ shots with one filling of the tank to 3000 psi. Saving a lot of Co2 and money of course. If you are interested in a longtime review, just let me know.
Best regards form Europe
I just wanted to show a little project I did over the holidays: converting a Co2-Revolver to HPA/PCP.
As base I used a Gamo PR-776 Co2 Revolver in .177 (it’s quite a standard revolver, you can find under many labels and names). It`s one of the „typical“ 100-bucks-Revolvers, so nothing too great.
As powersource I currently use approx. 1050 psi of pressure, coming from a 26cui regulated HPA-paintballtank.
That results in pretty consistent 295 fps with a variety of just +- 8fps (you always lose fps compared to using Co2). Also, the choice of pellets seems to make a big difference in fps and energy. 8 grain pellets go up to 310 fps. I actually use 7,87 grain pellets (the Gamo has a rifled barrel). I get like 2,2 joule / 1,6 ft/lbf of energy. As I am shooting on 10 yards in my basement, this is just right. Making pretty clean holes for a airgun, but not using much gas or putting too much pressure on the system.
I still need to adjust the sights (the Gamo shooting pretty high, so I need to work a bit on that, because I actually have to aim under the target, without having a single point to aim). Still I am pretty happy with the results so far, for testing (standing free, holding with both hands). The four pellets in the hole to the right are within 5/8”.
The gauge on the paintball tank didn’t go down noticeably, even though I was testing for more than 120 shots. I think u can easily do 1000+ shots with one filling of the tank to 3000 psi. Saving a lot of Co2 and money of course. If you are interested in a longtime review, just let me know.
Best regards form Europe