Mind of tempest
(he/him)advocate for 5e psionics
apparently making the armour would not be the problem as we could make armour that makes you safe against everything other than anti-material weapons the problem would be moving in it but we have the cheat know as magic to solve that.From my (limited) understanding from my mates in the military, in a boring real-world scenario, strength is mostly useful for machinegun usage in terms of actually carrying the thing around. The gun itself it not light, and you're probably also carrying a spare barrel, and the gun's weight again in ammunition, maybe a bipod/tripod.... it's a lot of metal and the weight adds up fast. A fully kitted-out automatic weapon could easily mass as much as a set of full plate armour and be considerably more awkward to bear - which is why the load is normally split over multiple people in actual militaries.
But of course in a game context that gets us into the world of encumbrance and load limits, and that's not fun for anyone really.
And again, in the real world I think weapons like these are usually fired from bipods etc. I could certainly see Strength being useful in a Hollywoody full-auto-from-the-hip scenario though - and this IS a game where cinematic stuff should happen, so that sounds like a reasonable way of doing things.
Still doesn't solve the armour issue though. Or what Str is useful for in my pre-Gatling Napoleonic rules hack...
so most low tear armour dies to bullets but you get into heavy stuff made for the purpose resist everything but explosive and anti-material weapons, which likely have some stuff made to reduce base armour class by some decent number.