Home Forums Hunting & Shooting Long Range Hunting 260 Rem or AI

A few of us long range F Calss shooter are debating on the merits of the two, standard 260 or 260AI. Barrel length is not an issue, we can run them long. Which would be the best choice for up to 1000 yards?

Repeater? COAL constraints?

For belly bench,it'd be 6.5-284 for me...if forced to slum a .264"...............

One of the crew has a 6.5x284, but barrel life is short, and he can't get his to shoot ( at least to his satisfaction) good enough.

The chambering is mechanically proven,in it's innate abilities to work wonders. If the 260 weren't enough to make me giddy,I'd certainly drive the 284 hull instead...................

A 260 AI pushing a 123 Scenar at 3,100 would put the giddy into it.

24.0 MOA and 1,550 at 1,000 yds.

How much slower do you figure the 6.5-284 to be?................(grin)

260 AI for me......nearly same performance as the 284 case but

less powder...two weeks ago I let a buddy shoot mine...an 18#

Savage/Pac-Nor set up....dialed it in for him and he slammed

the 10" steel plate at 1K yds 5 outta 5....Berger 140s or

Sierra 142s do the same thing...RE19 is my fuel....

Do it whenever I want with a 21" 223AI/75A-Max combo...............

How much velocity could you get with the standard 260 and 30" barrel with 123's and 140's?

Never drove a 30" and hope to never lose a bet of that size...............

Not even close.

Pressure for pressure, I'll always get 200 fps faster in a 284 case.

I've got a 30" and 32".

In the 30" i was moderately pushing Cauterucio's 120gr. 3100fps. I sold that gun and just recently got it back.

I put a 32" Mcgowen on another action and am comfortably pushing the 123 sierra's 3300fps. I am going to switch to the 123gr. Lapuas. Better BC.

This is with a straight 260.

260Shooter, It doesn't look like an Improved is needed. is it? What action are you using? Thanks, Luke

I thought long and hard about an AI. The fireforming and only about 100fps gain wasn't worth it to me.
Terry Cross shot an AI but since switched back to straight 260.

My 30" is on a Remmy short action turned into a single shot.
My 32" is on a savage 110 single shot.

I've had good luck with powders like RL-17,N-560,N-160, RL-22.
Seems like i can get the speed and not pushing it as hard like i had to with H-4350

Good info, Thanks, Luke

2995 with a moly 140 Berger & RE19...
fast enough for me in a 308 case........Pac Nor 8 twist/3 groove/27"

fire forming is a pain in the arese simply put! if your going to gain 200 fps or more OK. I just settle in with my 25/06 and bare the results, which aren't just to bad. However mine is for strictly hunting and not long range targets.

I would start with a .270-WSM case necked down to a 6.5 and go ride em cowboys!!! This ought to push a 140 grn bullet plenty fast enough out the end of a 26 inch barrel.

6.5x300WSM....its out there

WSM is fast for a 6.5, as is barrel life, some say 800 rounds..

What's the % gain in capacity?? I can't believe that, pressures being equal, a 200 fps is possible.