Lot of good posts, so I'll add something a little different.
Sniper - A sniper is usually a highly trained marksman that shoots targets from concealed positions or distances exceeding the capabilities of regular personnel. Snipers typically have specialized training and distinct high-precision rifles. In addition to marksmanship, military snipers are also trained in camouflage, field craft, infiltration, reconnaissance and observation techniques.
Based on that, I'm a sniper and I didn't even know it! I just was calling myself a long range hunter. Antelope mostly.
All the snipers I see are shooting rifles from improvised field rests or from standard field positions and they carried the rifle to the shooting spot.
To me, that puts these boundries on a 308 Sniper Rifle.
- < 15 lbs
- Positional aspect is more important than the clamp it in a vice accuracy
- Needs to shoot accurately to the maximum range for the lethality of the round. For a 308 on deer size game, 800 yards seems a reasonable distance to deliver sub-14" accuracy. So, basically in the shooter's hands 1.75 MOA. Now, subtract .5 MOA shooter error and .25 MOA for calculation error. and you need a 1 MOA rifle or better.
This requirement screams, find me a good out of the box rifle, get a laser range finder and a good scope.
In my case, I bought a Savage 12 BVSS, put a Burris XTR 3-12x50 mil dot on it in TPS rings and then I carry and shoot it with a TIS cuff sling.
I can hold 3 prone shots in .5" at 100 yards. I shoot 190 bergers out of a 300 WSM case.
My friends Savage 10FP,I think, shot a 5 shot .25" group at 100 when he let me shoot it.
Mine is bedded and his is unbedded in the stock HS Precision stock. So, in a nutshell, I think Savage can meet your demands. I would spend my money on the sling(TIS), scope( have no issue putting a $3000 USO on a near stock Savage), scope mount, rangefinder, and good spotter.
A custom rifle will guarantee you groups 1/2" or better, but it might cost you $6000 to get there. I would much rather put my money in the scope.
On a side note, I'd like to see a three-gun sport based entirely on the practical application of shooting. A handgun, a carbine with optics AND BUIS (that have to be used) and a long-range scoped rifle. You should have to carry everything that you need to shoot the ENTIRE match, all ammunition, water, food, magazines, with only bipods/backpacks allowed as rests. Maybe that sport exists already.
I think it's called war, but if you can set it up so the targets don't shoot back, I'm in!