The whole point of developing the 6.5cm was to build it from the ground up to utilize a heavy for caliber bullet. Thats a 140-ishgr+ which to me is the “standard” weight bullet in 6.5cm. Sure, it works fine lighter, it just wasnt the reason for it existing in the first place. I havent found it howitzer-like in trajectory, it’s not super flat but its not enough different than a 308 or 7mm08 or any other similar cartridge at short range to worry about. It’s like .2mils different hold than my .270 shooting a 130gr bullet at 300 yards, thats a non-issue imo. If you prefer a lighter bullet for any reason, a quick look at the sportsmans warehouse website just now showed 34 different factory offerings from 120gr-130gr, in almost any flavor you want from 120 eldm’s, 120ish ballistic tips, several 125ish hunting bullets, 120 and 127 monos, 125 accubonds, and a variety of 129-130gr hunting bullets, plus some similar weight otm and others. If you like sst’s hornady offers that loaded in a 129gr option. Personally dont think it makes sense to quibble over the difference of a few grains, so to me it looks like there’s at least a decent selection of loaded ammo in lighter bullets?