Roamy here. Okay, I plead ignorance on a lot of military stuff, but when I saw the video here I was waiting for the mortar to explode. So I asked XBradTC:
Q. Isn’t the mortar supposed to go boom?
A. First, it’s a target practice mortar with no warhead. Second, even if it were, the fuzes generally work on a two-step failsafe. There has to be a certain g-force at firing to start the arming process, then a time delay before the arming is complete. Finally, it takes a pretty fair deceleration to set off the fuze.
Q. How do you know it’s a target practice mortar?
A. A TP mortar wouldn’t be that hard to get. An HE mortar would. Plus, the guy shooting it didn’t scream like Rosetta when it was a short round.
Q. Is it really Russian or is the guy putting on a Chekov accent?
A. I think he is Russian, never really thought about it, and I’ve seen several of his vids. The Soviets did use 82 mm. We use 60mm, 81mm, and 120mm mortars. The 120mm replaced the 107mm mortar about 15 years ago.
Q. Could you shoot 81 mm mortars out of a 82 mm launcher?
A. You could drop an 81 in an 82 tube, and it would fire, but it wouldn’t be very accurate.