I shot the my rxd30ti this weekend and was very impressed with the performance with my 300wm. It seems to prefer to be under 3000fps, I have no data to quantify that other than the info on the ammo boxes. I shot 200gr terminal ascent which made it as quite if not quiter that an unsuppressed 22. We shot a 22 later and a group consensus thought it was quieter. I also shot 150g federal powershock and the report was pretty snappy vs the 200gr. It is significantly quieter than my encticer sti that I initially had on the rifle when I sighted it in. Changing the suppressor did move the impact about 5" down and 5" right. For me it was money well spent and would suggest it to others.