I'm not sure if this is the correct place for this, but I'll put it up anyway. I had an odd (and highly unlikely) thought. How would the 7.62x54r round function as a HD/SD round? I'm positive the x54r round had been used for SD, but what about HD? Let's say someone has a Mosin Nagant carbine (ie M44, T53, M38) and they were threatened by a home intruder? There's no doubt that it'd get the job done, but what about the practicality? Mosins are relatively cheap, and I can see how it'd be someone's only firearm, and ammo is cheap too, so it'd make sense in that area. But what about other factors? Penetration (over penetration), firing it in the confined places of a home, ect. What do y'all think? Just a random thought I wanted to share!