30 -06 makes a lot of sense--except if you already have a 300wm.
I think the '06 makes a lot of sense, not because I don't have a 300 WM, I do, two in fact. The '06 makes a lot of sense as an addition to, the 300 WM and 308.
In recient years I shoot more '06 in competition then I do the 308 and 300 Combined.
This is due to the CMP Vintage Rifle Games where I shoot the Garand, Springfield, matches plus the M1917 in the Military Match, and the M1903A4 in the Vintage Sniper Match.
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T. O'Heir
I don't and haven't shot F-Class. My 1000 yard shooting was NRA High Power. Sling in-supported. My Model 70 300s are heavy, in the 13 lb weights, and for me anyway, are as easy to shoot as the 9 lb 308s.
As I grow older, I suffer fatigue faster. A good comparison is, using the sling, unsupported I can shoot my Ruger American Predator in 6.5 CM then I can my wife's Ruger Precision in the same caliber. There is about a 4-5 lb difference. I do agree though, using bipods or some other rest, my Predator wont compete with the RPR, again both shooting the same 6.5 CM loads.
I can shoot my Model 70 Tgt in 308 win, better then both, either with a sling or rest, but I believe that has to do with the years and amount of ammo I've sent don't range with the 308. I'm just getting into the 6.5 CM.
And as a side not, I'm quite impressed with the CM Round. There isn't that much difference in drop and drift between the 6.5 and 300 WM, plus I can shoot it longer without fatigue.
I wish they had the 6.5 in the 70s when I started shooting NRA 1000 yard matches.