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The high BC in that cartridge means less wind effect and I think it is a little flatter shooting than the 243
.243 has more horsepower than the 6 creed. The difference is the 6 creed was always intended to use high BC 105-115 class bullets and factory rifles are twisted/throated accordingly. 243 is frequently neutered by slower twist barrels.
I do not handload, maybe the 243 has more horsepower with different loads. I pretty much use Hornady offerings and comparing the 6 Creedmoor with the 103 grain bullet It has more velocity, more energy and flatter shooting than the closest 243 shooting 95 grain and 100 grain factory loads. I know there are a few grains off of the bullet weight and not apples to apples but that is the closest comparison I could find on the Hornady website.
10-4. They are functionally about the same if building from scratch but the .243 has a little more case capacity. That little extra case capacity can be easily overcome if the bullets in 243 ammo are seated deeper, have a lower BC, or aren't loaded as hot.
Exactly. My .243 will be due for a new barrel this fall. The new barrel will be a 1-7 chambered for 6CM- based on a shooting buddy's experience with it and mine with a couple of 6.5CMs. Just too easy.10-4. They are functionally about the same if building from scratch but the .243 has a little more case capacity. That little extra case capacity can be easily overcome if the bullets in 243 ammo are seated deeper, have a lower BC, or aren't loaded as hot.