Dependant entirely on caliber, open muzzle or muzzle brake. 37mm open muzzle sounds a lot different from a Pershings 90mm with that huge double baffle MB. A 76mm with open muzzle will be a sharper report over the same gun with a MB, which will be a "wider" or disbursed sound (for lack of better description) with more noise behind it. Not all were the huge bang or the Mickey Mouse sounds from most of the current RC tanks and the idiotic whole tank jump. For WW II, if you have the recording tech, check some WW II movies or documentaries and record the tank you want. May take some time finding the exact one and a lot of replaying the same thing a few times to record it, but at least you will have something representative. The M-41 has a VERY nasty snap when it fires and I can only compare it to someone firing a 44 magnum while everyone else has a 9mm.

If there is a military training post near you and you are able to get close to the firing range and can record..that's a good source..have to be off to the side, or the concussion will distort the sound. German MGs are a lot faster than US and the Russian 12.7 is about the same sound as the US cal 50 but a bit slower. If there is a pistol firing range near you, a decent sound can probably be recorded of someone firing a 44 or 45 magnum. Put the mic a few meters off to the side and maybe a meter in front. For a Sherman or Panzer III with 37 or 50mm, that would sound much better than the sounds on the tank.


Good luck.