Bigedp51,
Good info. My past experience with the blown primer although many years ago did end up with a trip to K-mart to buy new underwear.
When I made the change from 6-1/2s to 400s thought I was good to go and shot the .221 with them ever since. Your info shows that I was misinformed at the time (before internet). Grandkids even shot it from time to time as a trainer rifle. Thank the Lord that no one was ever hurt (scarry). Haven't shot it for a while so I will pull apart whatever ammo I have and start over with the 450s.
Just purchased a new .223 take off barrel (not mounted yet) and need some 450s for that anyway.
Shows me that you are never too old learn (or at least open my eyes).
Thanks again for the heads up,
Randy
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