Hey Kingfish and Robert, Memory at our age is a fleeting thing.
I have one tid bit to add on the bullets. One guy posted that a 120 grain bullet was available. That may be too long to stabilize in a 1:10 or 1:12 twist barrel. However, I'm certain that a 120 grain bullet will be way over the stability zone.
I have considered cast bullets in my 243. I used to shoot the 25-05 with cast bullets. In that caliber, I used a 100 grain Saeco bullet with the long DD nose. According to the Greenhill theory, it was too long, but my gun didn't know that.
I used wheelweights and 2% tin added in my 25 and they ran out on the Chronograph at 2245 fps with no leading and very accurate.
My success with the 25 has made me think about the 243 with cast bullets.
Harold Clark