I have ask several HOF shooter and they say it does make a difference. I'm only concerned with 6ppc, and the 30br. the rest have little interest. Only accurate rifles our interesting........ and a rather less subtle change in SRP brass. Alpha (Starline too) retain the Large Rifle primer 2mm flash-hole diameter whilst Lapua and Peterson use the smaller ca. 1.5mm version as per the BR and 6.5X47L. This makes a more than subtle change to ignition/burn behaviours and pressures, the large-diameter version increasing them. Alpha says it tested both versions and found the large flash-hole 'better', but doesn't specify in what way(s).
If you are not loosing your brass & provided you shoot enough, I expect Alpha will exceed your criteria. Though you will likely benefit from annealing case necks if done right.Its all great unless you cant get Lapua in your caliber. My point was that Starline was $40 dollars a 100 vs $150 per 100. I need to get 15 firings to match 4 of the starline.
Lapua is always my first choice but when I can’t get what I need I’ll use Peterson or Alpha, been using quite a bit of ADG lately too.Lapua, I had problem with heavy bolt lift with 6bra Alpha brass even after significantly reducing powder charge.
I was going to do a good work up on the Alpha 6PPC brass Sunday, but the Monsoon Season has suddenly hit us. Can’t test in the rain.I have ask several HOF shooter and they say it does make a difference. I'm only concerned with 6ppc, and the 30br. the rest have little interest. Only accurate rifles our interesting.