RE: mini 30
I spent over a year fiddling with different loads, trying to find one that would shoot decently. I finally found it didn't really matter...the BEST loadI worked up would average about 2 to 2 1/2 inches at 100 yards, with a scope and rest. I traded the Mini for something that would shoot.
After telling a gunsmith friend about how hardI tried to tune a load that would beat the 2-2 1/2 inch range, he exclaimed, "You got into 2 1/2 inches? Wow, you must have the Olympic target model! I've never seen one that shot THAT good!"