Put a couple of dummy rounds together using the Hornady 300gr flat points. While they will feed off the right side of the action, from the left side they jam straight into the extractor cut. In addition to the flat point, they are stubby little buggers. I have to say that swaging down the Speer 350gr .416s is intriguing. Marty, where did you get the .410 Lee sizing die, and what did you use for lube?
