that’s why it’s neutered in the TT. But I’ve tended to follow slightly more realistic measurements.if Arty was that good in the game giant stompy robots would not work out though. i want my futuristic knights in space none of this spawn camping bullshit.
I can use the 15km range as a “minimum recommended rangeIt might be compressed for gameplay like the the standard weapons. From the range aerospace brackets that are linear with zero I calculated 1 km per 3 hexes. I think I used low altitude map hexes so atmospheric drag and beam diffusion would still be in play, but it's possible I used high altitude. I also may have fudged slightly to get cleaner numbers. I ran the calcs years ago now. A mapsheet is 15x17 hexes. Taking the 15 hexes per mapsheet that comes to 5 km per mapsheet. That's 90 km for the Sniper, 105 km for the Thumper, and 150 km for the Long Tom. Arrow IV would clock in at 40-45 km depending on tech base. Other than Arrow these are probably on the long side with the Long Tom outranging the Paris Gun, but some ratio of increase is needed because otherwise adjusted LRMs outrange Arrow IVs.
Unless you're using ground ranges as is, which don't track with the much longer aerospace ranges and are directly said to be compressed for gameplay in the Total Warfare preface, you need to apply some multiplier to artillery ranges to make them reasonable. Probably a smaller multiplier than standard weapons to keep the shells in the atmosphere.
Another value I've heard that I think allegedly came out of an unofficial post by an official account around the time of AEWAB was 9x which I think was slightly shorter and made ranges much less clean numbers. It gives a 126 km range to the Long Tom, which is short of the Paris Gun, but not by much. You probably want to pull a number out of your hat based on some real guns.