Bull Shoals wrote:
Are you using large pistol or large rifle primers with the bullseye/W231 loads. Or did it make any difference
These days I am using ordinary Remington 9-1/2 large rifle, because that's what I have the most of, I scored 5M!
With mild plainbased loads and easily ignited powders large pistol primers could be used safely, but they offer no real advantage unless you have lots of them and want to save your “rifle” primers for full loads, which I have been known to do....
For what it's worth, Frank Marshall used large pistol primers as a visual pressure check, his logic being that if the pistol primers in his rifle loads aren't flattening, the load is safe, but if they start mashing out flat, that would CERTAINLY be a clue!
Visual inspection of Rifle primers is not a safe indicator, because by the time you get noticeable flattening, you are already way beyond where you really should be, and you've only been lucky.
Frank said that pistol primers had softer cups more like primers in the blackpowder era his Uncle Will taught him about.
73 de KE4SKY In Home Mix We Trust From the Home of Ed's Red in "Almost Heaven" West Virginia