Re: 6.5x47
About six months ago I worked up a Varget load. The best accuracy/velocity was exactly the same as my RL-15 load. THESE ARE HOT/HIGH PRESSURE. 38.4grs for my wife's 6.5x47 and 38.8 for mine. The difference is from the throats. Mine is a GAP build. My wife's is an APA build and has about a .1" shorter case OAL to get to the same distance from the lands. I have used CCI BR, S&B, CCI SR and CCI Military primers. Stay away from the CCI SR for any of these loads, in my guns it was necessary to shoot thicker primer cups to avoid piercing.
The RL-15 load was very accurate, but seemed to be a bit touchy to temperature when I tried to use it during an 60 round/60 minute 300 yard match. I loaded up some rounds using VV530 and it is reasonably accurate, but I pretty much used it because I had a bunch. That load is not as good as the RL-15 load or the Varget load. It is my hope that the "extreme" line powder will move less over a longer course of fire. The Varget load is very accurate, I think more accurate than the RL-15 load. I haven't gotten drop data, but according to Quickload it will be a little slower by about 15fps.