I had read that, about jamming the bullets. I may try that too.
I tried my hand at annealing last night too. I did the cases I'd fireformed and also a couple of 7mm-08 cases that I sized down to .243. They wouldn't quite hold the same size as the regular .243 cases but they did better after annealing. I'll be much more comfortable with a temperature indications marker.
I had the epiphany that I load .243Win, .243AI and 7mm-08 and I could just buy .308 cases and use them for all. Lapua .308 cases are only $63/100 at Powder Valley.