All Springer/NP/PCP Air Gun Discussion General > Air Guns And Related Accessories Review Gates
H&N Piledriver REVIEW by Donnie Reed
ColdTexan:
Taso1000:
That's another great review by Donnie. I hope H&N fixes the issue because I haven't hear of anyone getting great accuracy out of the pellets except for one .177 rifle Ribbonstone owns.
Taso
MadDogDonnieReed:
--- Quote from: Taso1000 on February 14, 2018, 09:11:48 PM ---That's another great review by Donnie. I hope H&N fixes the issue because I haven't hear of anyone getting great accuracy out of the pellets except for one .177 rifle Ribbonstone owns.
Taso
--- End quote ---
Thanks Taso! It's my pleasure!
Indeed, I hope they fix the issue as well.
Bryan Heimann:
Probably gotta get em moving pretty fast
Taso1000:
The .177 version needs about a 1 in 10 teist barrel at around 900 fps. There is a calculator that works with subsonic velocities:
http://www.geoffrey-kolbe.com/barrel_twist.htm
Just enter the measured values and it will output a twist rate versus velocity graph.
Taso
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