I have experience with the 6.5 round for long range work, I shoot about 100 rds a month with one. Anyway, is the .270 WSM easier on throats and will it hold up out past 600 yds as far as B/C goes there is not a lot of difference within he two. I am in the processs of converting a .300 to a different round. Will use it for L/R targets, hunting and steel. Thanks in advance for the responses.