Any advice on a new barrel for my .308?

[Yogi GunKanobee]

Thank you for some excellent advice. Perhaps I'll email Dolphin to get an idea of cost etc.

[Rburro2]

Hi I have a remington 700 .308 it was built by dave at valkyrie 26" inch stainless fluted barrel by border its very accurate and Dave is a pleasure to deal with not cheap but you get what you pay for hope this helps

[Yogi GunKanobee]

Hi I have a remington 700 .308 it was built by dave at valkyrie 26" inch stainless fluted barrel by border its very accurate and Dave is a pleasure to deal with not cheap but you get what you pay for hope this helps

They certainly do some great looking work, but then cost is a consideration.......sadly.

[Rburro2]

Brock and norris is worth a look aswell

[jock308]

Currently, my .308 is a Remington 700 SPS with a 20” barrel in an AICS 2 folding stock. I’d like to use it as my “1000 yard” gun. I’m not out to win competitions, I’d just like to be confident of getting them in the black, hopefully somewhere near the middle. quote]

A 20" SPS is more than capable of holding its own at 1k. Sure a longer barrel, tighter bore, Bartlein on the door will help but I suspect the problem / lack of consistency is more in the execution than that tool. Plenty of people shoot 20" SPS out that far with accuracy, albeit not F-Class winners. Personally, I wouldn't be using a Lapua 155 in a 20" but I know others that have made it work well for them.

I have a 20inch 308 PSS which gives me 2666fps over a chrono with lapua 155 and 44.4grn or N140, this could be increased but even with this moderate load it will have 150fps over transoinic at 1000 so should hold the black no problem, my advice is shoot some 1000 matches and see what others are using, also see if you can read the wind and enjoy shooting 1000.

Jim

[Laurie]

I have a 20inch 308 PSS which gives me 2666fps over a chrono with lapua 155 and 44.4grn or N140, this could be increased but even with this moderate load it will have 150fps over transoinic at 1000 so should hold the black no problem, my advice is shoot some 1000 matches and see what others are using, also see if you can read the wind and enjoy shooting 1000.

Jim

Pardon! I'm afraid you're nowhere near good 1,000 yard external ballistics with the 155gn Scenar at 2,666 fps. Bryan Litz's work produced an average long-range G7 BC of 0.236. Although that puts it amongst the leaders of .308" 155s, it needs a lot more than that MV to keep it supersonic, never mind out of the transonic zone.

Litz's / Berger Bullets PM Calculator II says 1,094 fps at 1K compared to the speed of sound at 1,126 fps under standard ballistic conditions. (59-deg F, 29.92 inches Hg atmospheric pressure). To be sure a bullet is above transonic speeds, you want ~1.2 MACH at the target, ie ~1,350 fps.

Theoretically, you need a minimum MV of 2,730 fps to see bullets supersonic at this distance. In practice, it may be rather more as different bullet designs cope with transonic speeds differently, some definitely better than others. There is a risk of buffeting / airflow turbulence around the bullet as it approaches the speed of sound, and an average BC value then becomes over-optimistic as the bullet suffers increased drag and therefore slows faster during the last 150 yards of flight and hits the sound barrier at an even shorter distance.

At 2,666 fps, the Scenar hits 1.2 MACH at ~830 yards from the muzzle, again under standard conditions. That'll be somewhat less at Bisley on a cold winter's morning during an anticyclonic high pressure episode, a bit further out at Diggle or Blair in a summer heatwave.

[Yogi GunKanobee]

Well, it’s a done deal. Just had an email back from Mik at Dolphin and my rifle, complete with new 30” barrel, with snazzy “interrupted fluting”, screw cut with invisible thread protector and duracoted, not to mention new blot knob and fettled action, should be ready for next week!

:shakeshout:

[Laurie]

Good choice - Mik does really good work.

[The Gun Pimp]

Well, it’s a done deal. Just had an email back from Mik at Dolphin and my rifle, complete with new 30” barrel, with snazzy “interrupted fluting”, screw cut with invisible thread protector and duracoted, not to mention new blot knob and fettled action, should be ready for next week!

:shakeshout:

A good result - after all the 'advice' you got!

[Yogi GunKanobee]

I'm looking forward to seeing it, but not so much the shoot, clean, shoot shoot, clean....etc., but it's a very small price to pay! I may take it to a little 100 yard private range for that, and maybe some test loads.