LordKnightFandragon, on 28 May 2014 - 08:33 PM, said:
AC2 are 20mm, AC5 are 50? AC10s are like 85-90mm or so and AC20s are like 120mm
To mention it, vehicle, tank and mech MGs are 12.5mm, 20mm, and 25mm bullets respectively.
LB-2s can go as low as 20mm, but generally AC/2s are 30mm to 80mm high explosive saboted anti-vehicle rounds. (Still only did a total of 2 damage in about 10 seconds).
AC/5s are 40mm to 120mm. These varied in purpose but were more effective against heavier armor and vehicles while still effective against infantry and light vehicles.
AC/10s are 80 to 120mm. (Exception: Pontiac 50) The scatter and recoil was considered too ineffective against vehicles, but the sheer spam of fire was favorited by many. The excessive amounts of heat caused by their autoloaders was unwanted.
AC/20s are 100 to 185mm. (Exception: Pontiac 100). These things really tore things up but the combination of the immense firing speed on lower calibers or the high explosive nature of high caliber ammunition led to serious heating issues. (The Pontiac 100 literally burns through a magazine of one hundred 30mm rounds in a matter of seconds and then takes forever to reload, by hand -- leading the Victor's ammunition feed problems).
UACs do go higher, the UAC/20 of the Cauldron Born specifically being 203mm, and the only actually recorded "single shot" autocannon. Its frequently depicted with huge two barrels despite how other UAC/20s are depicted with one, as in some books it literally loads one shell into each barrel, rotates the ready-one into a firing position, braces its HUGE legs and fires with a jolt so strong that if the Stalker-lengthed, Catapult-footed, Jenner-height mech were any taller it'd fall on its back.
Autocannons are old tech, on the verge of becoming obsolete. The reason they are still around is that unlike lasers and PPCs, they had a physical punch that could disorient and knock over enemies, and they ran well even with 10 SHS. Since it was 1 heat for an AC/2 per 10 seconds, or 7 heat for an AC/20 in 10 seconds, it was really easy to manage. It was extremely high tonnage damage over time weaponry in exchange for being 'cold'.
A single PPC was more powerful than any single shot from an AC/20, though in the time a PPC had to recharge, the complete cycle of an AC/20 would beat out the PPC. Of course no one in their right mind would fire 2 or 3 PPCs at once due to what it'd do to you as the pilot. Ever had a dashboard so hot you could fry an egg into a black crisp? There's a reason pilots often drive in their underwear with cooling vests, boots, and gloves.
Meanwhile, the up until the Clan ER PPC came on the field, a Gauss Rifle was the most powerful single shot weapon to exist. In a single shot it'd perform equally the damage of 15 Stingers (an LRM-15). Without any explosive power. Most mechs hit with just one of these would fall instantly on its backside, like a Commando getting punched in the face by an Atlas at over 600 meters away! Governing these, aside from having only 8 shots per ton (unlike an AC/20 which in the largest case had 5 magazines of 4 shots each per ton), was the fact that it could only be fired once every 10 seconds per weapon as firing more frequently than that would cause the weapon to literally rip itself apart.
Firing twice in 10 seconds, like mechs have double armor, is perfectly fine with the way MWO is done. But a Gauss Rifle isn't a problem. If you don't like them, imagine what the Clan ER PPCs will do at 15 damage each, as their ability to pack in heatsinks is better than ours. They can get 3 ER PPCs to fire at the same time with ghost heat and still not shut down. You'll want Ghost Heat then and a fully functional Gauss Rifle.
To keep PPCs in check, we need a 30 threshold.
To keep ACs in check, we need burst fire.
To keep Gauss Rifle in check; we don't need to do anything. (If it was really a problem there'd be more than one or two users every 15 or more matches).