As I posted, I have been searching for s conversion nipple that I had purchased back in 1979 which had a screw off cap with a firing pin in it, you placed the rifle primer in the nipple and screwed on the cap. it not only gave maximum performance on the ignition, but made it waterproof also. well EUREKA!. for those interested I have found them again. at warren custom outdoors...they call it MAG-SPARK, it is stainless steel and cost $20. they sell extra caps in case you lose one, for $10 and an adapter so it will fit the old H&R Huntsman for $15. they make them to fit various thread sizes.
this is a great product!!!!