Had/have a couple.
My 6.5-284 Norma built on a Howa long action put its first 5 shots ever into 0.22" using ELD-Ms in handloads.
With handloads my 6.5 PRC will do 5 shots in 0.5" on the regular and 10 shot groups in the 0.7-ish range, again with ELD-Ms
My recently sold 300 PRC would do much the same as the 6.5 PRC with Hornady ELD-M's from the factory box.
Already planning my next build and it will have a BSF barrel on it.
N=3 is a small sample size but I'm batting a thousand with them so far.
Only downside has been the wait times which went longer than they said on 2 out of the 3 barrels. Their veterans' discount more than made up for the wait time though.