It was I who pondered locking up my Scenar's. Look At buying them in bulk at Graffs, Powder Valley, Bruno's Shooter's Supply, Sinclair or elsewhere. You can get the .243 105 "L'S" in bulk at Sinclair. You can expect a 25% to 30% reduction off the individual 100 rnd. boxes elsewhere by buying 1,000 .
As for the Berger bullets, I believe that, as many have stated, Walt Berger has a passion for accurate bullet manufacturing. The Bergers' fill a niche between the big manufacturers' mass-produced bullets and those custom made by small precision bullet makers such as Knight, Bibb, etc. A lot of what separates each of these three "categories" is the amount of quality control you get. I typically see more uniform bullet weights, etc. with Berger than Sierra, Hornady, Nosler, etc. - yet the custom bullet makers "often" outdo everyone except, in my opinion - the Scenar "L" bullets. Of course, the Scenar L's don't shoot in all guns either. The Bergers are great bullets that are good on uniformity - thus IF your gun likes them, they can do quite well. I, personally, have had no luck with Sierras in my 6PPC's (many barrels) and several other guns, yet I have one 6BR barrel that will shoot nothing else as well. I also have a factory Remington 700 Varmint that thinks it is a benchrest rifle when shooting the Berger 52's.
Bottom line, try both. The odds are that IF your barrel likes the Bergers - your averages may do better simply due to what I believe to be higher quality control and/or superior manufacturing process. If you weigh and sort by base-to-ogive measurements on your Sierras, I think this difference diminishes greatly as they too are a fine bullet. To say that any one bullet is the best only applies to uniformity and theoretical flight characteristics. As we know - it may not shoot at all in our gun. As for price differences between the Sierras and the Bergers, I don't see too much of a difference in the catalogs I'm looking at. Nothing like the difference in the "L" bullet. Yet, if it takes me an hour to weigh and measure a box of bullets - that is time I could have been working at a higher hourly rate for the difference in price of the bullets....