Hello,
After I ended banned on UK AG forum for āspammingā, after I directly answered what was my max power achieved with Uragan 2/ .25/ 700mm, I want to share it here for all interested. Hopefully, people here will be more interested than people there
Soā¦ Iām playing for some time with my U2, specifically interested in heavier slugs and ELR with transonic velocities, so I can get better BC than usual. After some findings about HS tension screw on factory default settings, I started tuning the balanced valve. My logic was next: if by default HS tension is too high, what would be the balanced valve tune to make maximum out of it? I was thinking like: if Iām not bringing any new stress to valve by doing soā¦
Btw my only proof of good tuning was ES; if itās low- Iām good.
Finally, I achieved some respectable numbers with different slug weights and hereās my āmiddle groundā:
ZAN slugs 37grain@333mps (1092fps) and ES 6. Thatās 98 foot-pounds of energy
Obviously, lighter slugs are going above speed of sound, therefore my future research goal is to play with +40grainers, either with CARM magazine or one by one.
Just for further reference, at the end, when I realized close to what Iām at, I added some minimal tension to HS, but far from questionable in terms of added airgun stress and mostly because ATM it was easier to turn HS little up instead of digging the valve to close it up just for a few degrees.
I havenāt even tested air efficiency but roughly itās not below 30, maybe even more.
I hope that this findings are helpful for you all, I would be very happy if I give you at least a small amount of knowledge that you all gave to me.
ATB
S.
After I ended banned on UK AG forum for āspammingā, after I directly answered what was my max power achieved with Uragan 2/ .25/ 700mm, I want to share it here for all interested. Hopefully, people here will be more interested than people there
Soā¦ Iām playing for some time with my U2, specifically interested in heavier slugs and ELR with transonic velocities, so I can get better BC than usual. After some findings about HS tension screw on factory default settings, I started tuning the balanced valve. My logic was next: if by default HS tension is too high, what would be the balanced valve tune to make maximum out of it? I was thinking like: if Iām not bringing any new stress to valve by doing soā¦
Btw my only proof of good tuning was ES; if itās low- Iām good.
Finally, I achieved some respectable numbers with different slug weights and hereās my āmiddle groundā:
ZAN slugs 37grain@333mps (1092fps) and ES 6. Thatās 98 foot-pounds of energy
Obviously, lighter slugs are going above speed of sound, therefore my future research goal is to play with +40grainers, either with CARM magazine or one by one.
Just for further reference, at the end, when I realized close to what Iām at, I added some minimal tension to HS, but far from questionable in terms of added airgun stress and mostly because ATM it was easier to turn HS little up instead of digging the valve to close it up just for a few degrees.
I havenāt even tested air efficiency but roughly itās not below 30, maybe even more.
I hope that this findings are helpful for you all, I would be very happy if I give you at least a small amount of knowledge that you all gave to me.
ATB
S.
