I was at a coaching session more than 20 years ago, a discussion started about carefully selecting pellets for your pistol and was it worth paying for premium pellets to practice. Some international pistol shooting chap was there and he said it's the practice that counts, not the pellet. He demonstrated this by selecting one of each of the seven types of pellets available and three random ones he loaded backwards and shot about a 95. In a pistol I've used hobby pellets ever since.