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Rifles, Reloading, Optics, Equipment
Suppressors
Supressor size vs. powder charge
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<blockquote data-quote="BallisticsGuy" data-source="post: 1216860" data-attributes="member: 96226"><p>In classical suppressors volume is part of the equation and not a trivial one. So is how the baffles are laid out, their shape and number of them and the internal design of gas flow passageways. With big powder charges the thing that seems to matter most in my opinion is material selection since you don't want the can actually blowing up or the baffle stack turning to powder and fragments. You can get away with an aluminum can on a .22lr but not on a 300WM. Materials selection defines what performance limits you can push the design to.</p><p></p><p>Mufflers and suppressors work the same way, by cooling and slowing down hot gasses. Mufflers depart from there by means of designs that try to have individual exhaust pulses cancel each other out and add sound attenuating materials to the mix. A firearm suppressor is focused purely on slowing the gasses and pulling as much heat off the gas as possible without interfering with the forward travel of the bullet. Car mufflers are not usually straight through affairs. They have lots of 90 and 180 degree turns inside. </p><p></p><p>In a suppressor it's all about pulling energy out of the gasses. You can do that by giving them room to expand before discharging them to the atmosphere, or by transferring the heat to some solid or liquid media and by slowing the gasses down dramatically. All three are done in a suppressor to some extent. The capacity for a suppressor to remove energy in one of those ways decreases the need to be able to do it in the others. Balance right. So if your baffle stack can slow the living pee out the gasses and pull a ton of heat out without being physically large then you can end up with a relatively small suppressor. In reality, yeah, size matters to a point but only insofar as the other elements mattered too.</p></blockquote><p></p>
[QUOTE="BallisticsGuy, post: 1216860, member: 96226"] In classical suppressors volume is part of the equation and not a trivial one. So is how the baffles are laid out, their shape and number of them and the internal design of gas flow passageways. With big powder charges the thing that seems to matter most in my opinion is material selection since you don't want the can actually blowing up or the baffle stack turning to powder and fragments. You can get away with an aluminum can on a .22lr but not on a 300WM. Materials selection defines what performance limits you can push the design to. Mufflers and suppressors work the same way, by cooling and slowing down hot gasses. Mufflers depart from there by means of designs that try to have individual exhaust pulses cancel each other out and add sound attenuating materials to the mix. A firearm suppressor is focused purely on slowing the gasses and pulling as much heat off the gas as possible without interfering with the forward travel of the bullet. Car mufflers are not usually straight through affairs. They have lots of 90 and 180 degree turns inside. In a suppressor it's all about pulling energy out of the gasses. You can do that by giving them room to expand before discharging them to the atmosphere, or by transferring the heat to some solid or liquid media and by slowing the gasses down dramatically. All three are done in a suppressor to some extent. The capacity for a suppressor to remove energy in one of those ways decreases the need to be able to do it in the others. Balance right. So if your baffle stack can slow the living pee out the gasses and pull a ton of heat out without being physically large then you can end up with a relatively small suppressor. In reality, yeah, size matters to a point but only insofar as the other elements mattered too. [/QUOTE]
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Supressor size vs. powder charge
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