1. Powders

Regardless of Calibre is there a difference is Noise/Muzzle Report between fast burning and slow burning powders for the same bullet ?

2. Yes it's simple Newtonian physics. Equal and opposite reaction.

3. You are going to have to explain that statement

4. For every action there is an equal and opposite reaction. To push a bullet forwards needs an action the recoil felt is the opposite reaction. This will be attenuated by the weight of the gun etc. for the same bullet weight then the speed of the forward action will be directly proportional to the speed of the backward reaction. Fast powder=fast push forwards and backwards. Whilst the actual recoil if measured may be roughly the same the perceived recoil will be different. The faster powder producing a punchier recoil.

hope this makes sense.

BE

5. Noise/Muzzle Report, was the question asked?

6. I read recoil!! One of the joys of being dyslexic! Sorry

7. I would expect so. A powder that isn't fully consumed within the barrel would have more energy to creat noise once the bullet has exited.

I have no evidence or references to back this up though.

8. Barrel length probably has more influence on this than burning speed of powder. What makes this say this is that the muzzle blast from the Russian Mosin carbine is impressive as is the fireball at the muzzle especially when compared to the rifle with the longer barrel.

9. so you conflate inertia and momentum with noise?

Noise will be a function of muzzle pressure which will relate to 'how much burnt' in the barrel so fast powders that burn in a short distance will have less pressure at the muzzle = quieter.
Stuff that is still burning when bullet leaves the muzzle = louder.

10. Originally Posted by Sauer90
so you conflate inertia and momentum with noise?

Noise will be a function of muzzle pressure which will relate to 'how much burnt' in the barrel so fast powders that burn in a short distance will have less pressure at the muzzle = quieter.
Stuff that is still burning when bullet leaves the muzzle = louder.
Ok excellent that sounds feasible and would explain why two identical Rifles with the the same mod and shooting the same bullet within a few fps of each other sounded so different the other day.

Cheers.

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