Well for handloading I would imagine that some light Nosler Varmint ballistic tips wouldn't exit. If they're legal you can always go the FMJ route. .243hole in...and .243 hole out. Until you get the reloading stuff set up see if there's a "white-box" winchester offering in .243. My 22-250 will actually shoot those as well as anything and they cost almost half of what other stuff does. (They come in boxes of 40 instead of 20 for the 22-250). I would imagine that, if they exist for .243, they would be targeted for the varmint hunter and expand/fragment readily since varmint hunters are nortorious for high volume shooting and would be looking for "cheap" ammo. That's definantly what the .22-250 is marketed towards.