No but I am sure it will do fine. N570 gave me almost 3150 fps with a 180. But that was over pressure, backed it down to about 3050 and found a great spot. The biggest thing with the 7prc is brass, it’s either ADG or Peterson or don’t bother.
N570 is probably the one you are referring too the most. N570 provides a significant gain in speed over many other magnum powders. But there is always a downfall to speed. It is very hard on barrels, just the way it is.
I don’t know how to fix this issue. Seems the spring inside the mag is extremely weak. The first cartridge of three loads great. Next two will not feed at all. It’s a 6.5 manbun