Wouldnt there be more pressure with a heavier load?
Does a gas that increases in volume as it gets hotter also increase in mass? I think the velocity of the expanding volume is what causes a comp to function. I could be way wrong as I only know 2 things about this. The first thing I know is jack and the second thing I know is shit.Yes. Just like air has mass, and wind can exert force on a ship's sail, but of course much more so at the high pressure & velocity of gas exiting a gun muzzle.
Gas definitely has mass. If it didn't, it wouldn't be able to exert force (like photons of light don't exert force and are massless).Do the gasses from burning powder actually have mass? Or is it just force from expansion applied to the cone inside the comp?
Wouldnt there be more pressure with a heavier load?
Does a gas that increases in volume as it gets hotter also increase in mass? I think the velocity of the expanding volume is what causes a comp to function. I could be way wrong as I only know 2 things about this. The first thing I know is jack and the second thing I know is shit.
Thanks for the explanation. Like I said I only know 2 things the rest being something akin to deductive reasoning
No, volume and pressure increase as a result of combustion, but it does not increase mass. Some of it is wasted as heat, but the expanding gas (solid powder converted to gas by burning) creates the high pressure that propels the bullet. This gas, being under pressure, exits the barrel just like air from an air compressor, and without a comp it just disperses into the air with a very loud pop.
You have the right idea with the velocity of the expanding gas. When a comp is on the barrel, that gas slamming into the baffle faces in the comp are what does the work to push the barrel & gun forward, resisting the rearward force from bullet momentum. The forward force on the comp is less than the rearward force of momentum, so we still experience some recoil to the rear, but not as much.
As a side note - I'm ignoring rocket effect at either the muzzle or comp ports for simplicity of discussion.
I'm trying to track down this information as well.
If anyone has ATEi in house work please let us know.
Gas definitely has mass. If it didn't, it wouldn't be able to exert force (like photons of light don't exert force and are massless).
Apparently, NASA disagrees:
https://www.nasa.gov/mission_pages/tdm/solarsail/index.html
What's the dot size of the Viper?Well, I finally completed my home-made, Walmart RS (done on a G19 MOS with a Vortex Viper). I got my barrel and comp from KKM last Thursday. Ran a couple of hundred rounds of duty 147gr G2 through it. Runs fine so far. About half of those rounds was fired in 10 round groups off the bags at fifty yards to zero the Viper. The groups were a very consistent, nice, round 3" to 3.25". The G2 has not been the most accurate ammo in its class for me in the past. I am eager to see what 147 HST will do.
As a follow up to ammo selection and compensator function/gas volume thing...
The 115+P+ (9BPLE) yielded ~slower~ split times (for me) than 147 grain loads (147HST) and performed with ~less~ consistency at distance (100y) under windy conditions compared to the 147 grain load.
The "light projectile/high gas volume" seemed to make sense, but the numbers don't add up for me.
YMMV
For those keeping score on the KKM barrel, mine shipped today (ordered on 3/22/2017). I sent them an email today to check the status and got an email back a few hours later saying it would ship today or tomorrow. Tracking generated this afternoon as promised.
Well that's interesting, as I ordered mine on 2/27/17, got confirmation of payment on 3/8/17, and called last week and it was to be in the next batch received from anodizing. Now I wish I had ordered from a dealer, but I am still eager to receive it and run my gun.
LE deal direct. It was worth it to go through them. That can apparently only be done by phone order. And I did not have any extra finish done to the barrel if that makes a difference.