"Deliver us from evil" is pretty good
there is one I can't find it's supposed to be like 50 years old. It's called moonshine mountain and they kidnap people and turn them into moonshine.
Blood? Hatchet. Texas Chainsaw Massacre. The Final (Disturbing...) Jeepers Creepers? Scream. Audition. Crowsnest (Freaked me out so much) I'm not into gore all that much but all know all about the genre. :D Most of these I haven't even seen but I know they're gory.
Not really "horror" movies, but Grave Encounters 1 & 2 are decently gory once you get past the openings and pretty good.
Not horror more trasher but Rampage is good The conjuring uh blare with project