The attached target photo shows how well pistol primers can work in rifle loads. As stated earlier I’ve found that pistol powders give the best performance with pistol primers in rifles cases. Sako .308, 3 - 5 shot groups at 100 yards. Lee 312160 as cast with two coats 45-45-10, 10.0 grains Red Dot, and Federal large pistol magnum (No. 155) primers. The second group has a “called” flyer. It was 95 degrees, heavy mirage and shifting 10-12 mph winds and I fired before I intended.