Free: Contests & Raffles.
I like the musket caps because there a little bit eaiser to handle when your hands are cold. Also like OPP said they give a hotter start to the powder charge. Sage
It seems I remember reading musket caps have 4-5 times the amount of flash and are 400 degrees hotter than #11's. I use RWS musket caps without the flanges with no issue except I did have to reduce my load 10 grains, than with #11's. I'm sure I burn the charge more efficiently with the musket caps.