dwwolf, on 23 December 2015 - 08:23 AM, said:
A shotgun mechanic in BT mechanics would have a smaller tohit bonus at close range with a bonus on the missile hit table. At longer range the tohit bonus would be bigger with a penalty on the missile hit table.
Instead we have a static to hit bonus and static missile table roll
LB-X cluster rounds should have worked that way (and the introduced-decades-later-IRL HAGs - essentially Gauss volley guns - do behave that way) - but, like a lot of things in BT, it was vastly over-simplified in order to allow for faster gameplay in the TT environment.
"Classic BattleTech is a game, not a detailed simulation. Therefore, the real world must take a back seat to game play - for simplicity, length of play, space required and simple enjoyment." - Total Warfare, pg. 36
Also, it should be noted that of the fragmenting AC munitions, only the LB-X cluster round actually uses the Cluster Hits Table.
- "For attacks made with cluster munitions, apply a -1 modifier to the to-hit number at all ranges. Resolve successful attacks as a cluster weapon. When firing cluster munitions, LB-X autocannons cannot make aimed shots, and they also lose the benefits of the firing unit’s targeting computer (if any)." - Total Warfare, pg. 141
- "Double the standard Damage Value against conventional infantry; half damage to all other units (round down). This damage is in addition to the doubling of damage against conventional infantry in a clear hex. In addition, double the standard damage against woods hexes." - Total Warfare, pg. 141
- "Flak ammunition provides an autocannon with the same number of shots per ton as an equivalent standard ammo bin. When fired, flak ammo generates the same heat and reaches the same ranges as a standard AC round, but only inflicts full damage when used to deliver a flak attack against airborne VTOLs and aerospace units, or when fired against conventional infantry. Against all other units - including battle armored infantry and grounded aerospace units - flak AC ammo inflicts half its normal rated damage." - Tactical Operations, pg. 352
So, when used in an anti-air role, LB-X cluster rounds get (at least) a -3 to-hit modifier (the -2 modifier from the Flak Attack, plus the -1 modifier from being a cluster weapon) while the standard ACs' flak and flechette rounds (the former being a proximity-detonated Shrapnel-style round & the latter being another shotshell-like canister round) get only (at least) the -2 modifier from the Flak Attack.
By contrast, the specialized rounds fired by the Silver Bullet Gauss Rifle (described on pages 314-315 of Tactical Operations as "'splintering' slug types" and "prefragmented rounds") and the volleys fired by the HAGs (essentially, coilgun versions of weapons like the Mitrailleuse, the Nock Gun, and the MetalStorm system) do make use of the Cluster Hits Table.
- "The Silver Bullet Gauss Rifle operates under the same rules as an LB-X Autocannon using cluster munitions (using the 15 column of the Cluster Hits Table), including the ability to be used as a flak weapon and the inability to make use of a targeting computer. Unlike LB-X Autocannons, Silver Bullet Gauss rifles may not fire solid slug rounds." - Tactical Operations, pg. 315
- "When an HAG hits a target, roll on the appropriate column of the Cluster Hits Table, but apply a +2 modifier at short range and a –2 modifier at long range. Treat a result of less than 2 as 2, and a result of greater than 12 as 12. Once the Damage Value has been determined from the Cluster Hits Table, damage from an HAG is divided into 5-point Damage Value groupings (any remainder damage assigned to a final grouping), with each grouping assigned to a different location using the appropriate Damage Location Table (provided the target has separate locations)." - Total Warfare, pg. 136

Though, none of that changes the point that Khobai is still wrong - the LB-X cluster rounds are not (and never were, and were never meant to be) a proximity-detonated munition; they are (and are meant to be) shotshell-style canister rounds that "behave like an anti-BattleMech shotgun".

