Breechplug

I think one of the problems is the almighty $... It costs a bunch of money to do the research and development. Then it takes a company with a lot of guts to create something new and then try to sale it to you as an advancement because they are going to increase the price of the merchandise. In this competitive world price is everything. What is worse they can not protect their upgrade even with a patent, so it can copied by someone else that makes a small modification on the original and calls it theirs, but did none of the research and development. Pretty cheap that way.

The other thing I think advancements to the BP have occurred when regular people make a change and see that it works. One of those little discoveries was creating a larger flame channel (5/32nds or slightly larger) that really has a dramatic effect on blow back from the primer.

With the advent of BH and the necessity to use those very hot primers - I think that will call for another ugrade in the BP. A normal BP will carbon and will probably develope gas cutting much quicker than ever before. I guess what I am getting at is the old addage... "necessity is the mother of invention" or something like that... As we demand more more will be developed... shoot look at what cell phones can do today that is really amazing...