Originally Posted by rscott5028
6.5x284 is a different animal from the 260 rem. It will push the heavier bullets faster and maximize their effectiveness over slightly longer ranges.
As Wildrose states, the 260 Rem is a better balance for barrel life, recoil, etc... and with the medium bullets, it'll perform equally well, or arguably better out to some distance depending on circumstances.
Both are great cartridges. I prefer the 140's for my 6.5x284's. I don't currently have a 260. But, I like Wildrose's approach and may have to try it some day.
It took me a very long time to settle on the .260 because I had a specific set of criteria I wanted to fill.
To begin with I wanted a high velocity, high BC round in excess of 110gr's that would work in a long range LR platform.
The .243 just isn't quite enough. .308 lacks the velocities I want because this weapon will be used a lot on predators and hogs, which are usually moving and sometimes at very high speeds.
I also wanted something proven in both tactical and general target shooting to be a precision performer beyond 500yds.
I've been working on this project in my head now for three years. I also gave serious consideration to the 6.5 Lapua and 6.5 Creedmore. I went with the bigger case because I didn't want to limit myself to shorter calibers if I wanted to just swap uppers so the Lapua was out. That left the creedmore and 260. I had to then just pull out my crystal ball and decide which caliber would be around in 20 years with the best availability of both factory ammo and components and I just figure that the .260 has the edge there along with slightly better ballistic characteristics.
As I was nearing a decision I cemented my position on the LR-308 platform in .260 rather than going with the AR 15, because at some point I'm probably going to build another upper in .325 wsm, as a dedicated hog gun that I may well try and use at some point on an Elk Hunt.
I don't have a lot of money, and when I buy a gun it's like buying a member of the family because I don't part with them easily and so I'm going to have to live with my choices for the rest of my life.
If I could have made a .264 WM or 6.5x284 fit in an AR platform, trust me I'd have had to do a hell of a lot less thinking over the last three years HA!
The ballistics of the 6.5 bullets in 140gr have been one of my favorites for over twenty years but I just can't get the combination of both bullet weight and velocity I desire from the 140's so I'm focusing on the 120-130gr range.
I'm very fortunate that there have in the last few years come along some just awesome bullets in that range.