I have a Taurus Tracker w/ a 4" ported barrel in 357 Magnum and am having trouble w/ reloads. I have a bunch of old brass. The reloads load into the gun quite fine w/o evidence of too little clearance/tolerance but after shooting often stick and even interfere w/ cycyling of the cylinder. I notice a bulge in the very base of the cartridge that is not accessible to any reloading die and think this is the problem. I am using Blue Dot powder and the problem happens w/ both light and full loads. It does not happen w/ factory ammo which I believe rules out the gun. Is Blue Dot too fast a powder even w/ lighter loads and am I generating too much pressure that's causing the problem? Any help appreciated.