I was shooting 178-amaxs in my 308 win with 45 grains of varget I was getting 2740 fps, I have switched to 175 smk and using the same load. I won't get a chance to chrono them for a while, are these traveling the same speed or how much gain do you think I am getting. They hit 1'' high at a hundred and about 3'' high at 500 when I use my drop chart for the 178's. P.S The 175's are shooting .25'' three shot groups at 100 yards,,center to center. I switched because they will fit in the mag and the a-maxs had to be loaded longer to get good accuracy. thanks-for the help.