16.5g Varmint Knockers performance on Jackrabbit

If you want to take a deep dive, I kinda hijacked this thread from @greenbeans a while back although providing necessary information on most .177 slugs available.

Can you take some pictures of the HP on the 13.43gr KO slugs? I'm thinking the ones you have are made with thinner walls than the rest I've had experience with and same with @RoosterCogburn
Hahaha that’s what made it a good thread! And made me enjoy a .177, eventually ;)
 
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on the uragan 2 valve stem. Is there supposed to be an oring or not? The only thing consistent in u2 threads is multiple different contradicting claims and exceptions.
Never had mine apart so can’t tell you first hand… but from what I remember on videos and schematics, no, no oring on the valve stem (on the poppet are some, though).
 
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A little louder than before, but WAY quieter than the U2 ever was that's for sure.
My dad was shooting the U2 the other day and I was standing there like 3-4 feet away… very very quiet (with a falx tho). I really think there was something off or maybe because it was out of a car or by whatever. Doesn’t matter anyway since you got a worthy replacement :)