|
Shane, I had trouble with my 220 swift. I backed off to reasonable speeds around 3600 fps. purchased a bullet comparator to check runout, a micrometer tomeasuure neck thickness. shot 100 rounds through and selected a few pet brass.(35 out of 100 or so) loded the pets up and ran them through the dial indicator to check bullet runout <.0015 selected the best of those. Chamber diameter at the neck and neck thickness of the case will govern the bullet seating preasure and give you consistant chamber pressure. Now you have spent about $400 and two weeks of your spare time. Your wife and your friends think you are a little nuts but the prarrie dogs' spy is running home with some terrible news! Let us know if it was worth it.
da fox,
|