I was so excited to get the 250 fury star tip crimped to shoot good with the 4227 and then D55 had barrel damage issues with the short powder column of a fast powder in a similar gun and I had to pull back on it, I still would like to find another load that I can use with it. I need to try some more charges of Imr 4198 with it, I did weigh some up today. 51.5 50.5 55 and maybe do some 53. 56 gr. doesnt quite impress and neither did 59 gr.