Think I'd go .243 just for the increased accuracy and flatter trajectory. And because I have one. snicker. However, as mentioned, at up to 125 yards it won't make any difference.
"...Any reason for only considering the .243 Win..." Seems to me the only other option is .308 or pistol calibre rifles.
"...Any reason for only considering the .243 Win..." Seems to me the only other option is .308 or pistol calibre rifles.