SAAMI COL is 2.86, I wouldn't think that 2.87 would be an issue as long as it feeds reliably. Nosler's data shows 60.5 gr of I 4350 as a max load. I would go back to 58.0 and work up from there in .2 gr increments. I always go for the accuracy and don't worry about speed. The deer isn't going to be able to tell the difference of a couple hundred fps.