Joel, now you've nailed a key point....
"Perfect fit" varies according to stuff like tenon diameter, operator proficiency, brand and amount of lube used, temperature and about a dozen other variables. I know and I believe Greg knows that "when it's all working" brass growth isn't an issue.
Getting it working and keeping it working is kinda' like tuning
edit... (((( BTW I'll also go out on a shakey limb here and opine that were Greg to think back about that 220 Swift, there was more going on there than just the hotrod round. I've gotten 220's to operate just like many others, certainly better than the 22-250. But it takes lots of time and money. I'll venture a guess that the aforementioned 220 wasn't using fitted dies f'rinstance.....))))
Kelbly's is in a difficult position. In the end it's largely an operator function GIVEN perfect fit...... IMO Kelbly's goes with what pleases the most of their clientele. I've been a gunsmith, swore off it. The reason? EVERYBODY thinks they've got it figgered out..and they'll happily blame everyone but themselves when their idea'rs don't work. As you've probably noticed I get all fired up about people sending back barrels/guns/scopes etc to get them "fixed" because 99% of the time it's operator error.
Getting good results from resizing gear is "brutally simple" to use Jackie's term. Keep fixing it until it works.
Or STOP wherever you're happy.
In my world the only thing that speaks is results.
Once I've spent my money I don't care about feelings or names or reputations, I've used a large percentage of them. Nowadays often mix and match... I started down this road 20yrs ago when my financial situation began to allow it. I had packages built by 3 different people and spent days on the phone with dozens of them. I've found wild disparities between various people's ideas but one pattern emerged, a bunch of different people can make winning packages BUT THEY DON'T ALL DO IT THE SAME!
And all are hampered by the skill quotient of the end user. And I don't mean shooting skill.
As far as "state of the art" I don't have an opinion except that I don't favor the combination you list.
Which is worth exactly NUTTIN
al