I shot a brass nockset/eliminator (cushion) button combo for years and I was able to get very good accuracy out of those setups. The string loop that everyone has gone to as of late is a relative newcomer to the archery scene. Many people were shooting very good scores and quite a few deer very accurately long before the loop came along.

If the brass nockset upsets you though then just have someone tie on a nockset with some serving thread instead......does the same thing as a brass nockset with less weight and less possible damage to your nock.