Yakusai no Moushigo to Seijo no Meikyuu - Vol. 2 Ch. 12

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They had to have. That had to have been the initial salvo, maybe with KE or APFSDS or the like. Even locating / direction finding small arms fire at that distance is near impossible. You'd hear a supersonic crack as it whizzed past, maybe, if not even that and only a small "thud" if it was a small caliber that fell transonic.

Context: Having stood downrange marking targets in a scoring trench at 200-600yds while being shot over.

There is no way to even remotely reliably hit something at 2,000 meters, two kilometers -- 2,200 yards -- without anything short of an accurized 300 Norma Mag or starting to creep into larger calibers like 338 or 416. And that's assuming a spotter, perfect holds, prone, wind holds (maybe doesn't exist in dungeon), etc.

Absolutely unlikely with a WW1 bolt action or Rem 700 pictured here, unless that Foreigner had superhuman abilities and magical ammunition. At which point it should no longer even be considered a "gun", instead could be thematically replaced with a magical staff or sci-fi laser beams. But author chose to use something relatable, without doing background research.

...or maybe it was a translation typo, and instead was "200 meters" (220 yards). One kanji different: (sen) instead of (hyaku). Then running and evading becomes a lot more beleiveable.

Don't Piss Off Guntakus.

Evading at 200 meters doesn't make much sense either. Assuming even just standard 7.62/.308 and nothing fancy you are still talking ~790-850 m/s. That's a fifth of a second from trigger pull to target hit. Moving enough to evade while running toward the shooter over open ground isn't believable at all unless the shooter is really really bad.

2000m with a 7.62/.308 is just stupid tho. I was an 0317 and even with match grade rifles made for long range shooting specifically you are pushing it at even 1000m for reliable hits on point targets. IIRC the longest confirmed kill with a 7.62x51mm recorded was only something like 1250 meters and that is considered pretty insane. At that range even having super human senses aren't going to really help because the problem is the shooter but the ballistics of the round itself.
 
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They had to have. That had to have been the initial salvo, maybe with KE or APFSDS or the like. Even locating / direction finding small arms fire at that distance is near impossible. You'd hear a supersonic crack as it whizzed past, maybe, if not even that and only a small "thud" if it was a small caliber that fell transonic.

Context: Having stood downrange marking targets in a scoring trench at 200-600yds while being shot over.

There is no way to even remotely reliably hit something at 2,000 meters, two kilometers -- 2,200 yards -- without anything short of an accurized 300 Norma Mag or starting to creep into larger calibers like 338 or 416. And that's assuming a spotter, perfect holds, prone, wind holds (maybe doesn't exist in dungeon), etc.

Absolutely unlikely with a WW1 bolt action or Rem 700 pictured here, unless that Foreigner had superhuman abilities and magical ammunition. At which point it should no longer even be considered a "gun", instead could be thematically replaced with a magical staff or sci-fi laser beams. But author chose to use something relatable, without doing background research.

...or maybe it was a translation typo, and instead was "200 meters" (220 yards). One kanji different: (sen) instead of (hyaku). Then running and evading becomes a lot more beleiveable.

Don't Piss Off Guntakus.
tiger 2 can fire modern rounds like APFSDS? 🤨
 
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tiger 2 can fire modern rounds like APFSDS? 🤨
It's historically inaccurate; but theoretically possible.

I'm sure 88mm KWK 43 could be made to shoot specialty ammo.
(You'd have to ask the magical god that summoned it where he buys his ammo used for granting miracles, though.)

My point was the scenario depicted lent itself more to an (auto) cannon, than bolt action rifle.

https://en.wikipedia.org/wiki/Armour-piercing_fin-stabilized_discarding_sabot
To reduce the spin rate when using a rifled barrel, a "slip obturator", (slip obturation ring), is incorporated that allows the high pressure propellant gasses to seal, yet not transfer the total spin rate of the rifling into the projectile. The projectile still exits the barrel with some residual spinning, but at an acceptably low rate.

In addition, some spin rate is beneficial to a fin-stabilized projectile, averaging out aerodynamic imbalances and improving accuracy. Even smooth-bore fired APFSDS projectiles incorporate fins that are slightly canted to provide some spin rate during flight; and very low twist rifled barrels have also been developed for the express purpose of firing APFSDS ammunition.
 

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