Tuning ❓ WHY did my PP700 get louder?

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JungleShooter

JungleShooter

Member
Sep 5, 2018
3,621
1,676
Lima (11,000,000 people + twice as many pigeons)
❓ WHY did my PP700 get louder?



I have been shooting my PP700 regularly.

However, lately, both I and others thought that it sounded louder than it used to.

❓ I wonder what might have happened — because I need it QUIET! 😊





🔶 The specs:

PP700S-A

.22 cal 

Pellet: H&N Sniper Light 14.04gr

Sumo silencer

Huma regulator

Tune:

REG 120bar

MV 688fps (14.8FPE) = 4.5% below the knee of 720fps





🔶 All I did recently to the gun was I extended the dovetail rail with a dremel to have more space for a long dovetail-to-picatinny rail adaptor.

And I changed to higher rings to mount a Tactacam on the Discovery VT-3 3-12x44 FFP.

After rezeroing it, it keeps hitting the pigeons at long ranges, just like before. 😊





Puzzled.... 



Matthias
 
How much velocity do you usually loose when the seal starts to go?
Click to expand...

I think it varies a great deal. The seal could dislodge a small portion, or the entire O ring could blow out. The only time I actually measured it, was when a small section of the O ring blew out, and I think the velocity loss was around 100 fps.
Click to expand...

Thank you, I am having a drop of about 30 fps in my Uragan but with a loss of accuracy. 
 
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