Both of those rifles are capable of 1000 yard work with the right load development and a great deal of trigger time along with good optics and a little tuning. I have a buddy smacking metal at 1000 with a pc10 and loves it....he's shooting handloaded long-range Nosler Accubonds (can't remember the weight). He's happy with the accutrigger so hasn't hanged it out yet. I also have a brother that just recently acquired a FCP SR and has been working up a long range load and last I knew he had walked it out to 600 with just a little tuning on the rifle. I have a 10 FLCP-K in 308 and have walked mine out to 500 so far with 168g Nosler Custom Competition's...I am going to try the 175's next though and see if I can tighten up my groups...point is, all three rifles are pretty much barefoot (factory) with some tuning and they all shoot very well when we do our jobs. I am not sure I have seen any noticeable difference between my brothers 10 FCP SR with the 5R barrel and the standard barrels on our rifles on the range.