It depends on a lot of factors, but usually it has to do with supply vs demand. For instance, a new and/or popular bullet might just be sold out because demand is outpacing how fast we can deliver product to dealers. The firearms industry, and ammunition specifically, is very susceptible to market fluctuations. Every few years demand drastically increases for a few months at a time, usually due to worries about regulations or because of other such issues. "Ramping up production numbers" isn't a flip of a switch solution for high quality manufacturers, it requires significant capital investments in machinery, which can take months-years to get in place and operational, and then weeks-months of training employees on the new machinery. If a company makes a lot of investments in increasing production numbers, then the market goes back to it's normal state (as it always does), then they'll be in a particularly bad position. Over the past decade, we've seen many companies that were extremely well known go bankrupt from this exact practice. Seeking short term wins without thinking about long term stability. We believe in responsible long term growth, without any compromises to product quality. We have been increasing our production numbers significantly every year by expanding our manufacturing shop, but we simply cannot keep up with growing demand. Your best bet to find a specific Berger bullet is to contact your local dealer and place a back order or to look through our online dealer list to see if anyone has them in stock. You can find a dealer near you by visiting our find a dealer page and you can find a list of online dealers on our  dealer webstore page.