I will be getting my 338 whisper in 2 days. Its a custom rifle built by Gap using a surgeon action with a mike rock barrel 5r 6 twist. all BO metal in A5 stock. any ways it will be shooting MK 300 at 1000 fps. I was told to moly the bullets just in case to help so they wont get stuck in the barrel. Cause of the fast twist rate which makes it harder on the bullets. Should i moly the barrel or the bullet or both.