It seems like most times when I focus hard enough on the boss HP bar and hit said boss with Snipe, that the HP bar will move, rather than standing pat like it would if the attack was doing 1 damage (since the damage reads as "1," albeit in crit red color). I'd be curious to know, or if I should just focus on rebuffing like most classes do during those periods.
Lol, suddenly the comprehensive guide ain't so comprehensive! (just playin, it's a weird question). After experimenting, since it's been over a week after I made this topic, it does hit through everything, bosses included. I even tested it on Bone Fish, a mob that uses cancel weapon attack. The only question that remains is if it's a bug or not. My assumption is that it's not a bug. But I'd hate to see it removed in the event that it is.
My gut says it should hit through, it's snipe and all. One small +1 in the MM book, ya know, the 1 that shows up might just be the servers way of dealing with the fact that instead of dealing enough to kill the boss (like it does with regular monsters), it deals max? If a GM can comment on this to clarify, I'll add this to the guide.
I've played MM at gMS back then, and I'll confirm that it was always like that. Although, I don't remember IF we used to hit 1's or not.