I have several questions but the first one pertains too the .243 wssm. I was thinking about building a rifle using this caliber but i am having problems finding out much about it. Is this caliber a better performer than the .243 win. Or is there something better out there. Question 2, i have a 270 win with a m 98 action and a McGowan barrel. I love the accuracy, but have seen some post that say there are alot better barrels out there. I don't know much about barrel manufactures and there products, so if i could get some helpful hints I would greatly appreciate it.