Thanks, at least all the information is legible - I had nightmares of it being a mindf*ck.
Yeah depending on your play style, this could be more helpful to some than others. If you were using explosive rounds on the Heavy Sniper Mk.2, I'd suggest you ONLY use those rounds for vehicles including aircraft, because for players and NPC enemies, it's a bit of an expensive waste. The 230 DPR of standard ammo combined with an 8 round extended magazine is far better for taking out personnel - as long as you can get your shots on target.
I did actually start out using the FMJs with the Combat MG Mk.2 for vehicle shredding power, but then that was always my go-to weapon for dealing with enemies. Even though I've got the FMJ's on the SMG Mk.2, that's only really used for armoured vehicle windows from the likes of Business Resupply missions or when they're driving APCs or Police Transporters, etc.
Explosive rounds should probably be available for the Pistol Mk.2, I'd have just given them a limited range (the usual 120 metres) and half the damage of the other explosive rounds on the Heavy Sniper Mk.2.