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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Does A Can or Suppresor Increase Back Pressure and Decrease Velocity??? Well????
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<blockquote data-quote="cohunt" data-source="post: 2439025" data-attributes="member: 94491"><p>As far as mufflers--- "made you put on" vs. "chosen by chassis dyno testing" makes a huge difference. Also, people sometimes will test only horsepower acceleration testing on engine or chassis dynos--- don't forget on a car/motor there are also "roll down" numbers to consider -- this number is basically how fast you loose horsepower on gas let off. In drag racing this wouldn't matter, but circle or road track racing it does.</p><p></p><p>As far as carbon build up in a can goes-- it takes quite a while for that to happen--- I have a few thousand rounds through each of my cans and notice no buildup internally. ( unless it's my 22lr can, but I was under the assumption that is both carbon and lead buildup in a 22lr can) I do get a slight increase in muzzle carbon build up on the barrel though--- but I get more with a side port brake than with a can.</p><p></p><p>The biggest difference I see with my cans is poi change. Some people say that a can doesn't effect point of impact--- I have not seen this in my guns-- I definitely have a different point of impact with the can on vs off--- though it is extremely repeatable. But the same goes for a bare muzzle vs a braked muzzle-- I get different poi's I think this is more a function of barrel harmonics though.</p><p></p><p>As far as accuracy goes--- I get the same or better with a can on--- I have not seen any degradation of accuracy in my guns when a can is added.</p><p></p><p></p><p>I think that the barrel of a gun has far more "back pressure" possibilities than a can does-- the volume of the can is more than the barrel but both are still open to the 14.7 psi atmospheric pressure--- besides, a barrel opening is only caliber size, but the opening on the end of a can is larger than caliber (to avoid baffle or end cap strikes)</p></blockquote><p></p>
[QUOTE="cohunt, post: 2439025, member: 94491"] As far as mufflers--- "made you put on" vs. "chosen by chassis dyno testing" makes a huge difference. Also, people sometimes will test only horsepower acceleration testing on engine or chassis dynos--- don't forget on a car/motor there are also "roll down" numbers to consider -- this number is basically how fast you loose horsepower on gas let off. In drag racing this wouldn't matter, but circle or road track racing it does. As far as carbon build up in a can goes-- it takes quite a while for that to happen--- I have a few thousand rounds through each of my cans and notice no buildup internally. ( unless it's my 22lr can, but I was under the assumption that is both carbon and lead buildup in a 22lr can) I do get a slight increase in muzzle carbon build up on the barrel though--- but I get more with a side port brake than with a can. The biggest difference I see with my cans is poi change. Some people say that a can doesn't effect point of impact--- I have not seen this in my guns-- I definitely have a different point of impact with the can on vs off--- though it is extremely repeatable. But the same goes for a bare muzzle vs a braked muzzle-- I get different poi's I think this is more a function of barrel harmonics though. As far as accuracy goes--- I get the same or better with a can on--- I have not seen any degradation of accuracy in my guns when a can is added. I think that the barrel of a gun has far more "back pressure" possibilities than a can does-- the volume of the can is more than the barrel but both are still open to the 14.7 psi atmospheric pressure--- besides, a barrel opening is only caliber size, but the opening on the end of a can is larger than caliber (to avoid baffle or end cap strikes) [/QUOTE]
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Does A Can or Suppresor Increase Back Pressure and Decrease Velocity??? Well????
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