You can find some good stories on hentai-foundry if you know where to look - I suggest checking out theVisitorBlack if you're into consensual guro/snuff. You will need to log in to see that stuff though, iirc

There's also some good stories at bdsmlibrary; the author of high heeled hell is a good one on there (a mix of consensual and semi-cons, mostly). However, I'm not sure if it's even possible for people to upload to bdsmlibrary anymore, so you're not going to be getting anything new from there