My little Hornet is a 77-22 with a 14 twist. I have to push a 45 grain pill close to max to get the best group and have yet to find a load for a 50 grain that works well in mine, but I have not tried to slow it down as much as our friendly beekeeper does. It would be great to find a super mild 50 grain load. I wonder about the crimp on such a light load.