I AM SO GLAD SOMEONE HAS MENTIONED THIS! All of this is hard fact (except the bit about common place suppressors in the US military. In the Army its still pretty rare to see them out side of the special forces groups and Rangers.) and can be clearly proven.
I am an soldier, extensive firearms user,trainer, and tactics coach and never in my life have i seen any negative affects from using suppressors give off any negative affects other than that they can fall apart rather quickly under automatic fire. and that can be fixed by getting better quality suppressors. its all logic. And i agree on the length being WAYYY too long on 6.5mm. that's HUGE compared to a standard suppressor even for large caliber weapons.