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Velocity numbers 312, Racine 342, 392PA
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Velocity numbers 312, Racine 342, 392PA
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Topic: Velocity numbers 312, Racine 342, 392PA (Read 386 times))
RodJ
Shooter
Posts: 94
yes
Real Name: Rod
Velocity numbers 312, Racine 342, 392PA
«
on:
September 26, 2020, 05:06:27 PM »
Just some numbers to add to the pot in case someone keeps up with these things. These are ROUGH averages of 3-5 shots. I guesstimated the average to the nearest 5fps. What was interesting is the differences in increase of FPS from one rifle to another from 4 pumps to 6 and then 8.
Benjamin .22 hollow point “discovery” pellets, 14.3 grains
Caldwell Ballistic Precision chrony
85 degrees, indoor
312 Benjamin Franklin
Used / new to me, allegedly resealed a few years ago
4-430
6-490
8-545 9.43 FPE
342 Racine
Used / new to me, no history
4-495
6-570
8-625 12.41 FPE
392PA
Bought new by me (late 1990’s? Maybe 2000’s?), stock
4-545
6-620
8-680 14.69 FPE
«
Last Edit: September 26, 2020, 05:11:58 PM by RodJ
»
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Austin, Texas
eeler1
Expert
Posts: 1599
yes
Real Name: Jon
Re: Velocity numbers 312, Racine 342, 392PA
«
Reply #1 on:
September 28, 2020, 12:25:30 AM »
Cool that you posted this. Seems I’ve seen a repository for this info somewhere?
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West Sacramento, CA
RodJ
Shooter
Posts: 94
yes
Real Name: Rod
Re: Velocity numbers 312, Racine 342, 392PA
«
Reply #2 on:
October 01, 2020, 08:53:31 PM »
I think that’s right. Thought I saw a thread somewhere in which there were a lot of velocity numbers. Maybe that’s what subconsciously motivated me to put these up. If I can find the thread, I’ll put them there. Tonight is “fix the burr in the chamber at the transfer port of the new to me 397PA. The #17 and #16 drill bits showed up today.
Thanks for the reminder eeler.
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Austin, Texas
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Velocity numbers 312, Racine 342, 392PA