Knew I forgot something. After you've found your load and fired the cases a few times, take a paper clip and unfold it then bend about a quarter inch at a 90. Sharpen the point and reach down inside the case. Gently drag the clip up the side wall of the case and feel for a slight grab. If you get that grab #1, throw that case away and check the rest as head separation isn't far behind #2 check your loads to make 500% sure you're not loading heavy. Sometimes the bump will show up from repeated slightly hot loads that aren't hot enough to blow primers. Also do this every so often anyway as cases fatigue after a while but if it only shows uo after mulitple firings its not a hot load, just tired brass. Best thing you can do is read everything you can find, go carefully and follow manuals to the letter, just use caution with online reload info. Then get out and shoot til you can't shoot any more so you have to reload again,, practice, caution and patience are probably the 3 things that will help you most. And the odd screw up is normal, as long as you don't get hurt just chalk it up to experience and get back behind that press.
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