Suppressors Experience w/ PMC target .22lr (yellow box)

[Stealth-X]

Hi guys. I've found that the PMC Target (standard velocity, yellow box) is sub-sonic. I've experience no sonic crack in 300 rounds and wonder if there is a reason to use the more expensive ammo marketed as subsonic?

I've been firing at an elevation of around 3800ft. Does the speed of sound go up or down w/ elevation? And while we're on that subject, does the speed of sound go up or down w/ temperature increase?

Thanks,
Nate

 

[bohem]

Re: Experience w/ PMC target .22lr (yellow box)

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Stealth-X</div><div class="ubbcode-body">Hi guys. I've found that the PMC Target (standard velocity, yellow box) is sub-sonic. I've experience no sonic crack in 300 rounds and wonder if there is a reason to use the more expensive ammo marketed as subsonic?

<span style="font-weight: bold">Consistency in powder charge helps with it's accuracy.</span>

I've been firing at an elevation of around 3800ft. Does the speed of sound go up or down w/ elevation?

<span style="font-weight: bold">It generally drops</span>


And while we're on that subject, does the speed of sound go up or down w/ temperature increase?

<span style="font-weight: bold">It goes up as temp goes down. SoS is a function of density, so as the density goes up, so does the speed of sound. High altitude at higher temp is a double dose of reduction in SoS.</span>

Thanks,
Nate </div></div>

See above.