Was this load something that was published in a reliable reloading manual, or was it something that some "expert" recommended to you? I myself have never had the nerve to use handloads that weren't within the parameters of published data. I've always figured that published data was developed by companies that had equipment with which to measure safety parameters as well as velocity and accuracy. Most other "experts" don't have the expensive equipment required to develop such data. Home-made data can put your fingers, hands, eyesight, face, and even your life at risk.