Tbh, I would have if I had the guns unlocked at that time but nope I missed the chance. I used to raid a lot and all of the dupe gear dismantled for many cores. Plus I wore shit gear from 650 all the way to 700 and only infused a few things at 680 and the rest at max level. And I get 21 cores per week from clan milestone and a few more from scrappers each week and got a lot from revelry. I'm one of the smart efficient ones whom the wasteful inefficient ones seem to hate. The amount of time some people have spent making posts about cores could have gotten them dozens each week simply by playing the game. I dont even buy Wanted bounties, they're kind of a waste of time. Oh yeah, just got 10 cores from crucible reset too. It's not that bad. Just sucks for newer players like my gf, whom my popular post was about, but even now she has acquired a decent amount through normal play. Still, I wish she could use them to masterwork but she will need to save them for infusion instead. Oh well, it is what it is. Good luck man. Tldr: I play the game and get cores naturally. I am against cores for infusion and I think they should be for MW only. Still, -blam!- doesnt get anyone more cores. Just adapt and adjust.