Dennis, I'm "pretty certain" it won't be a problem. I have not done that with grits, just metamucil, cornmeal, and even coffee, no proplems with those loads over time. I'll shoot a few with coffee, you shoot the grits and we'll have breakfast. Then I'll shoot some with metamucil and we'll be both be ready for a good sit. Harrrrrrrrr!
prs
ps: Don't scorn me about waste'n good coffee. It was some danged "gormet" junk someone gave me and it was not fit for drink'n. Shoots real good!