Started muzzle loading with RWS 1075 caps. They always performed very well and improved accuracy in all my smoke-poles. Due to inability to find them in any retail gun store or elsewhere, had to use other brands when in stock. Other brands performed okay, but POI wouldn't stay exact even with everything else being constant. Wish there was a website or some other information about who stocks these caps near my location. Bummer to pay so much for shipping and hazmat if they are available online. Thumbs up to Graf & Sons whenever I order from them. Good folks!