300 grn 338 Berger test @ 3000+fps

[RDM416]

first off, thanks for your post/information. it's the kind of stuff we all "dig" i don't want to sound like Mr. negative, but assuming you have a group and flyers with 3 of the 9 shots, 33%, being called flyers is a pretty strong number. i'm not going to advocate shooting at least 15 shot groups like Bart B did, but i think you're making some assumptions without nearly enough information. i also don't agree with your assumption that they like to be close to the lands. certainly they might, but testing at 3 6 and 9 thousands off is way too fine of adjustments for starting loads. i had a fellow with a lot of competition and long range hunting experience tell me to experiment loading the 338 bullets .05 off for better accuracy. it held true for both of my 338's. i guess the point i'm trying to make is you're making conclusions based on way too little data.

Dave, Thanks for your input. I certainly agree about looking at the % of flyers, even 10% not acceptable if they are truly equipment / component induced flyers. My question to answer with shooting more groups is "was it just me?" My sample group(s) were just too small and only 1 session to say for sure. Your advice on spreading out my seating depth is great, I will try further off the lands and a wider spread on my next test. The previous barrel on this rifle liked 250 SMKs best at .1 off the lands.