Author Topic: Finally fitted a SS valve in a Maximus .177!!!!  (Read 1171 times)

Monkeydad1969

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Re: Finally fitted a SS valve in a Maximus .177!!!!
« Reply #15 on: March 08, 2018, 10:15:41 PM »
No, .177 Piledrivers are 21gr.
  • Aurora, Colorado
Joe the P-Dawg Slayer!!!!!

oldpro

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Re: Finally fitted a SS valve in a Maximus .177!!!!
« Reply #16 on: March 08, 2018, 10:28:53 PM »
I’ll power tune it but I don’t have any ammo that heavy on hand so I’ll get some coming
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Monkeydad1969

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Re: Finally fitted a SS valve in a Maximus .177!!!!
« Reply #17 on: March 08, 2018, 10:37:38 PM »
Sweet.
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mcoulter

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Re: Finally fitted a SS valve in a Maximus .177!!!!
« Reply #18 on: March 09, 2018, 05:37:26 AM »
Maybe I have not had enough coffee yet, but what's the "PF" reference in your strings?
  • Central New York

Monkeydad1969

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Re: Finally fitted a SS valve in a Maximus .177!!!!
« Reply #19 on: March 09, 2018, 05:49:59 AM »
Maybe I have not had enough coffee yet, but what's the "PF" reference in your strings?

Here you go...

Power Factor (PF)

Put simply, power factor is a measure of the recoil force exerted by a round of ammunition when it is fired. 

Power factor is calculated by multiplying the weight of the projectile (in grains) by the muzzle velocity (in feet/second).

Power Factor = Projectile Weight x Muzzle Velocity
Ergo:  .21*874=18.354 as shows on shot 10 of my string.

Joe
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mcoulter

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Re: Finally fitted a SS valve in a Maximus .177!!!!
« Reply #20 on: March 09, 2018, 06:45:38 AM »
Gotcha!
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