My k/d went down so I lost my shotguns and back to skull and a knife.. whats the exact k/d you need for shotguns? Mine is 150 right now.
It varies, if you know what it was the first time you got them, it should be somewhere around there. 160 seems to be the magic number for some people around here...
I think it also depends on the number of total kills you have. I started my shotty grind when I had about 150k kills, it took me getting my k/d to over 220 before they popped. That was finally around 230k kills.
Yeah I didn't get mine until an exact 240 kill/down and 280 kill/death, but if he got his around 150ish k/d it probably won't take that much grinding for him to get them back. It seems like the algorithm works differently for each player depending on all the stats working together.
I saw a kid get his shotties with a K/D of 114 the other night. He'd only just got past 20000 kills aswell. The other stats really do play a big part I think.