No experience on elk with them, but I do have enough experience with core & jacket separation on deer that I won't use them.
As previously stated, they worked until we had the internet; well, I suppose they did and one of the reasons they did is that options were extremely limited years ago and at that time, they were a major player in the market. Fortunately, that's not the case today.
Last edited by StudDuck; 06/02/15.