A few years ago I made paper needle-fire cartridges for a French Needle Gun. That was a lot of work, and very messy with the black powder loading. Only about 1/2 of those would fire. With this rifle I was able to make custom "metallic cartridges" that fired 100% of the time, with no mess. This was a fun, rewarding project.

You never pay too much for something, you only buy it too early.