Originally Posted by RangerBrad
I will soon be in my last stages of building and profiling a round for my 25-06. I am using 115gr Berger VLD hunting bullets, 54gr of H4831 powder and Remington 9 1/2 primers and achieving an average 3028 fps velocity. I am seeing velocity diffrences of between 15 and 30 fps and would like to bring that down could yal sugest a primer that may bring down my velocity diffrences? Thank's, Brad
Try a standard LR primer CCI 200 or Federal 210. Switching to a standard LR primer may give you exactly what you're looking for. However, you may need to increase your powder charge a little bit to get back into your accuracy node. It has worked for me to get my ES down.
Truthfully though, if the primer switch doesn't improve the spread, 15-30 fps ES isn't all that bad, and the results may improve just by shooting on a different day. Also, even at the high end of your velocity swing at 30 fps it still only costs you 5" or so at 1000 yards. Only you can determine whether you can live with 1/2 MOA drop with an at worst 30 fps velocity swing with your 25/06.
I'd tend to bet a lot of guys that have claimed single digit ES are really in the 15-30 fps ES area after monitoring ES over a large sample of shots. Unless you know exactly how to adjust your load for differing atmospheric conditions you'll see velocity swings and differing ES. Speaking in general terms, many single ES claims are made with a relatively small sample of shots over a chronograph.