6L 275psi 12” barrel dump valve Golf ball sender.

[JamesD.]

I want to chrony the GB but it’s not easy to break the valve even at 150psi. This thing is insane. I don’t want to whack my chrony. Estimate gotta be over 400fps. I might add a longer barrel.
Any data if you have one? I know it’s not a toy.
709 grains, 300fps 140ft/lbs 400 250
I’m not sure if I want to risk my chronograph lol

 

[Brent]

I want to chrony the GB but it’s not easy to break the valve even at 150psi. This thing is insane. I don’t want to whack my chrony. Estimate gotta be over 400fps. I might add a longer barrel.
Any data if you have one? I know it’s not a toy.
709 grains, 300fps 140ft/lbs 400 250
I’m not sure if I want to risk my chronograph lol
View attachment 472011

Maybe get someone to hold it while you aim and send it. Less chance of killing the chrony.

 

[JamesD.]

Maybe get someone to hold it while you aim and send it. Less chance of killing the chrony.

Nah. I’ll do it when it’s sunny and as not to blow it over probably 6’ away.

 

[Joedirt199]

Need someone with a new garmin doppler style chronygraph.

 

[airgunmike56]

Oh that looks bad, Got to take a video of it in action, I alway thought a potato gun would be so much better shooting golf balls or tennis balls

Mike

 

[JamesD.]

Oh that looks bad, Got to take a video of it in action, I alway thought a potato gun would be so much better shooting golf balls or tennis balls

It’s just for inflation of tractor and other big tires. Modified bead blaster. Dual duty and safer than starting fluid. I’ve burned myself getting tires seated lol so I speak from experience.