Is this safe


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jbech123
December 28, 2009, 12:14 AM
how are they doing this with a 308?
Seems it would be the best long range 308 load going? Heavier bullet going just as fast a 175's

http://www.midwayusa.com/viewProduct/?productNumber=878909

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scythefwd
December 28, 2009, 12:37 AM
I can get you load data that is 2543 fps and 4k psi under max SAAMI pressures. They are just pushing it a little bit faster, and probably still 2.5k psi under max pressures. Corbon has access to powders that home reloaders don't and it is possible they are easily below max pressures.

44.5 gr o BL-C(2)
190 gr jacketed bullet
2543 fps
58065 psi (max is 62000)

W.E.G.
December 28, 2009, 12:58 AM
Test it before you jump to any conclusions.

Its not the "best" load unless it shoots best in your rifle.

scythefwd
December 28, 2009, 01:55 AM
+1 w.e.g.

R.W.Dale
December 28, 2009, 02:03 AM
manufacturers also have a bad habit of either overestimating velocities or using overly long test barrels

scythefwd
December 28, 2009, 02:06 AM
Krochus - Wait.. you're telling me all of your rifles don't have a 26" barrel:D

USSR
December 28, 2009, 07:43 AM
The hands-down best powder for heavy bullets in the .308 is VihtaVouri N550.

Hornady Match brass
190gr Sierra MatchKing
Fed 210M primer
47.0gr N550
2.840" OAL

I get 2700fps out of my 26" barreled FN SPR. Quick Load says that this load remains within SAAMI pressure specs up to 47.5gr. Great long range load.

Don

dubbleA
December 28, 2009, 08:42 AM
USSR

What barrel are you running on your SPR as I am not aware they are available with a factory 26" tube?

USSR
December 28, 2009, 11:32 AM
My FN SPR is a 1st Generation model. They only made about 650 of them, before moving the manufacturing from Winchester's New Haven, Conn. plant to the new South Carolina FN plant. Barrel is just like the 2nd Gen. models (chrome-lined), only 26" long.

Don

Jim Watson
December 28, 2009, 11:41 AM
How is that chrome lined barrel doing for accuracy?
Friend of mine is crying as his stainless barrel's accuracy deteriorates.
I know the conventional wisdom is that a chrome lined barrel will not be as accurate as naked steel because of the added processing and combined tolerances, but we can hope. If it is good enough, it seems a natural for F-TR; plenty of practice without having to change out barrels every year or so.

jbech123
December 28, 2009, 01:14 PM
Test it before you jump to any conclusions.

Its not the "best" load unless it shoots best in your rifle.

of course, I just meant best external ballistics. hopefully my 5r with 11.25 twist will shoot shoot these heavy bullets well, but paper doesn't lie so the only way to know is to lob some downrange.

USSR
December 28, 2009, 02:17 PM
Jim,

FN has a proprietary method of applying the chrome. While it is true with most chrome-lined barrels, that you give up some accuracy, I have not found it to be true with the FN SPR's. I took great pleasure this year in beating guys with GAP-built sticks.

If it is good enough, it seems a natural for F-TR; plenty of practice without having to change out barrels every year or so.

Yep. With an estimated barrel life of 15,000 rounds, what's not to like?:)

Don

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