Moly coat and extreme velocity spread?
Hey fellas, Funny thing happened at the range today. A friend of mine and me were trying out some 40 gr Bergers for our .204s. My friend built all these bullets at the same time with the same equipment parts etc... except he used 27gr of H4895 in his and 26.5gr of the same in mine and he Moly coated his bullets and not mine. The odd thing was that his E.S. was 17fps while mine was 116fps. so we decided that it wouldn't harm are rifles to bad to just shoot a couple of each other's rounds. When we switched he got an E.S of 138fps and when I shot the Moly coats I got an E.S. of 18fps. What the heck? Does moly coat cut down on that much E.S. or what? He has never used a chrony before but always swore by Moly coat that it makes tighter groups for him. What are we seeing here? Other than the Moly coat and the grains of powder everythig else was identical. Your thoughts please. Thank's, Brad