Clatartar, you're quite right, I have a strong preference for "old school" bullets, but not to the total exclusion of the new ones. As Jerry mentioned, what I most want is a bullet that behave with utter predictability - and there is nothing quite as predictably, reliably, accurate as those big Sierra MatchKings and the Lapua D46. In almost any barrel and with an astonishingly wide range of powders and charges, those bullets will pound the X (or V) ring out of the target - all you have to do it get the windage right.
There is one other not inconsiderable consideration - cost. Frankly, as nice as the new offerings from Berger and Lapua are, they are quite dear. I shoot roughly 5,000 .30 caliber bullets per year, now I know that isn't quite enough to sink a ship, but it's enough to put a good sized dent in my wallet. Not only are the Sierras less to buy down at Bruno's, but they are really cheap when you buy them from fellow shooters who have switched to 6mm and 6.5 mm cartridges. I am constantly on the lookout for deals like that and in Phoenix, a retirement haven, have been able to stockpile a very large amount of Sierra 180, 190, 200, and Lapua D46 for an average cost well below US$0.20 per bullet.
Now, cost and ease of tuning are important, but I go to matches to try to win, so if they weren't competitive, it would be a waste of time money and energy. The simple truth is, however, that they are very competitive. I really only use the Bergers (BTLR) for our biggest matches (State Championships, the Berger championship and the like) where we have 100 to 200 shooters on the line and every little tiny, teensy weensy edge might help. Because, that's what you get for all the additional expense and effort - a tiny gain in real scores. It just isn't worth it for our weekly (and sometimes twice and thrice weekly) club matches where my main concern is to execute good shots and to test myself against the wind (while trying to win). As it happens, the old bullets are quite good, as they always have been, and the wins and top 3 finishes come often enough to keep me happy.