Well, according to the info;
http://www.sarna.net/wiki/Autocannon
Description
An
Autocannon is a type of rapid-firing, auto-loading direct-fire
ballistic weapon, firing HEAP (High-Explosive Armor-Piercing) or kinetic rounds at targets in bursts. It is, basically, a giant "machine gun" that fires predominantly cased explosive shells though models firing saboted high velocity kinetic energy penetrators or
caseless ordnance do exist. Among the earliest
tank/
BattleMech scale weaponry produced, autocannons produce far less heat than
energy weapons, but are considerably bulkier and are dependent upon limited stores of ammunition.
Autocannons range in caliber from 30mm up to 203mm and are loosely grouped according to their damage vs armor.
[1] The exact same caliber of shell fired in a 100 shot burst to do 20 damage will have a shorter effective range than when fired in a 10 shot burst to do 2 damage due to recoil and other factors. Autocannon are grouped into the following loose damage classes:
Beyond the "standard" models, variants include the shotgun-like LBX, quick-firing Ultra and the gatling-type Rotary. Light-weight variants and capital ship scale models also exist. The experimental Hypervelocity Autocannon has also entered limited production.[2][3]
Caliber
Caliber is fluff for the size of the barrel that the shell or shells are fired from and no standard caliber has been set for any of the classes of Autocannon. Autocannon in a class vary by manufacturer and model. With the fluffed number of shells and caliber being specified, no Autocannon has been specified to be one shell fired for each "round" or burst of fire. Probable exceptions are the 185 mm ChemJet Gun Autocannon/20 mounted on the Demolisher combat vehicle and MonitorSurface vessel or the 203 mm Ultra Autocannon/20 on the Cauldron Born A BattleMech.
Barrel Arrangement
All Rotary Autocannon are multiple-barrel arrangements.[4] Some standard, Light, and Ultra autocannons also use a multiple-barrel arrangement, but not as frequently.
http://www.sarna.net...tary_Autocannon
Description
Developed in the early 3060s by the
Federated Commonwealth, the
Rotary Autocannon is based only loosely on the
Autocannon. While it has the same bore, it is capable of firing up to six times as many rounds as its standard cousin, allowing it to deal three times the damage of even an Ultra Autocannon. At the same time, each extra shot increases the amount of heat the autocannon builds and increases the chance for a jam. Like Ultra autocannons, Rotary autocannons are unable to make use of special munitions.
Clan Diamond Shark created their own
experimental version of the Rotary Autocannon in 3069.
[1]
http://www.sarna.net...ltra_Autocannon
Overview
The Ultra Autocannon technology was originally developed in
2640 by Kawabata Weapons Inc, in response to
Defiance Industries's request for a specialized
autocannon/5 for their
Sentinel BattleMech design. The result was a weapon that resembled the standard model only in the general damage that each round can inflict, as the KWI Ultra Autocannon 5 boasted a shorter smooth-bore barrel, modified breech mechanism, rapid-feed ammo reloader and specially designed ammunition.
While these enhancements gave the weapon an effective range exceeding that of LRMs and standard AC/5s, it most notably allowed the weapon to fire at twice rate of the standard model. Unfortunately, besides generating twice as much heat and burning through ammunition supplies twice as quickly, the extremely high rate of fire causes ultra autocannons to vibrate violently, leading to higher incidence of weapon jams. Though giving the weapon an equivalent volume of fire, because of these vibrations ultra autocannon fire is not as accurate as a pair of standard weapons.
Like many pieces of advanced
Star League technology, Kawabata and their unique weapons disappeared during the maelstrom of the
Succession Wars, though the
Clans retained and refined the technology, eventually producing variants in all autocannon classes. Thanks to the
Helm Memory Core, the
Successor States regained the ability to produce the original Ultra AC/5 in
3035, and, using this weapon and Clan-tech salvage, were able to introduce Ultra versions of the
AC/2 and
AC/10 in
3057, finally the
AC/20 in
3060.
For specifics about a particular type, click on one of the links below:
Well, that's where they line up. The AC line isn't a typical one-shot like what we see, but rather a multi-shot repeater. The exception is the LBX which functions as a shotgun for firing them all at once with a reload. The specific Rotary is a faster version firing more shots than the AC, but functions much like the Ultra AC line in that regards.
I'm all for this change. Would be a hell of a sight I'm sure.