How long does a cartridge need to be on the market before we know it's going to survive? We've had so many recent cartridge introductions, some truly puzzling, that I wonder how long it will be before we know whether they are going to survive on the market.
Is there a way of finding out how well a cartridge is doing on the market?
How does a potential customer protect himself from cartridge obsolescence? For example, if the 7mmWSM is now hard to get ammo for (and I'm not saying it is, I'm just using it as an example), then how much might it cost to rechamber the gun for something more readily available?
I wonder if there's a new industry to emerge in retrofitting guns away from obsolete modern cartridges.
One that comes to mind as good is the new 338 that Hornady developed. Seems like a good idea, especially if it will handle bullets up to 250 grains. But my psychology being what it is, I'd probably buy a 338 win mag just because it's better supported by rifle and ammo makers.
I also wonder what compelling force is needed to unseat an established cartridge within a niche. For example, since the 30-06 is so popular and universally accepted, what point is there in introducing a different cartridge that does the same thing? It does not seem to be the same problem as introducing a new cartridge into an empty niche.