The suggestion of using a rem 700 take off barrel is a good one i reckon.
Ive recently finished off a similar project.
I had an old Rem M7 in 260 rem, it had done alot of work when i brought it 2nd hand, and i gave it a fair bit of work too.
It was an older sliw twist 260 barrel and just wouldnt shoot anything heavier than 123gr well.
I grabbed a rem 700 takeoff barrel off the forum. 8 twist 6.5CM 24" long.
We spun the old barrel off ourselves and screwed the new 6.5CM barrel on, tighrened it up and checked the headspace, absolutely perfect. Too easy.
The 700 barrel was a slightly heavier profile than a M7, which was cool.
The factory plastic M7 stocks are super flexi (700's are too).
So i fitred a much stiffer B&C stock (another cheap 2nd hand forum purchase)
My barreled action dropped into the bedding perfectly.
My factory M7 trigger got a tickle up by forum member 7mmSaum a few years back and is well up to the task.
I threw an spare Weaver SuperSlam 3-15x42 ontop of it and loaded up some rounds with 143gr eldx (seated to fit the mag) in front of some go-go dust (Re26)
I got out yesterday to sight it in and shoot some test rounds.
I found some acceptable accuracy well under .5 moa and great velocity at 2910 fps with a low Sd.
Im really happy with how its come up, and It's cost me sweet bugger all.
A 143gr at that speed holds 1800+ fps and 1000+ ftlbs to 780 yards, so no slouch for a non mag SA case.
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