If you have read my posts recently i have been asking a lot about different calibers to use for long range hunting and shooting. Most people tell me to go somewhere in the 6mm or 6.5 area. Now after long thoughts i dont know if i need that much gun. I currently own a 7mm rem mag, 300. wsm, 30-30 win and a 22LR. i need something for in between. I do a lot of yote hunting and want a gun for varmints. I though about it and my longest possible shot would be around 1000 yards. Now i WILL NOT be shooting at that distance unless its target practice or for fun. I want to be shooting around 500-700 yards comfortably and then just for fun shoot further. I found a good deal on a 243. win and was debating. But then i decided i would rather buy a new one or custom it. My question is do i actually need the 6mm or 6.5. Does it really give that much more over a 243. win or 243. ackley improved. I WILL NOT be doing competitions. This rifle will be for my pleasure only. I was strongly leaning towards a 243. win or 243. ackley improved either fully custom or on a rem 700 action, with a Krieger or Hart barrel, a Macmillan A5 stock, and possibly a Jewell trigger. I have witnessed first hand a 243. win take a mule at just short of 400 yards and drop him in its tracks, and a 243. ackley improved take a pronghorn at 627 yards. for my intended purposes (coyote hunting within 400 yards most likely) and target shooting between 500-700 yards) is the 6mm or 6.5 really that much better then a 243. win or 243. ackley improved?