10-4. Just to remind, "BC improves speed down range": velocity is not linear. therefore, one might want to consider velocity at POI rather than at muzzle. Long range hunting succeeds with the use of higher BC bullets: less velocity degradation and better wind and flight performance. I hope I said that correctly and meant not too offend. I am currently considering re-barreling my 28N from 1X9.3 to 1X8 twist.Reading through all the posts on here, rokslide and the hammer time forum the added speed makes up for the loss of bc and results in more spectacular on game performance with the 143&155