6.5x284 Tejas

[IdahoCTD]

A .308 with 155gr Palma bullets (.505 BC) isn't far behind a 6.5x284, Creedmore, 6.5x47 Lapua. A long barrel 308 will get 3000fps pretty easily with a 155. The smaller 6.5's will shoot 130gr (.550 BC) bullets 2900ish and a 6.5x284 will shoot .600+ BC 140gr bullets in the 2900 to 3000fps range. I would bet the 308 barrel would outlast all of them too.

 

[linuxfreak003]

just to chime in on this...The 6.5 is not really cheap for as other ammo goes. The cost of brass is about like buying weatherby brass. After that initial hump then it may be cheap. A 308 would be much cheaper to shoot I would think. Both will do the 1000 yards but one shoots a lot flatter has better BC's. I have the 6.5 and love it. I'm not nocking the tejas rounds but I think it would be more in the long run if you are having to fire form brass unless it possible to just resize the brass. Or if it is custom brass than its a whole different game. After looking at the 6.5 tejas velocity I would think it will cost more per round than the 6.5x284 norma, but it would have some smoken speed out of the 140VLD's. I would think the barrel will also wear out a lot faster as well. Just my 2$.

Yeah, I was kind of thinking just going with the 6.5x284 would be more practical, without the modification. They are advertized as coming out pretty smoking fast, but after thinking for a while I'm thinking the velocity of the 6.5x284 is just fine. I understand the initial brass starting out cost. I'd actually rather pay more for brass, and have cheaper bullets... specially since they would be shooting flatter. Thanks for your 2$, 'tis appreciated

 

[Michael Courtney]

A .308 with 155gr Palma bullets (.505 BC) isn't far behind a 6.5x284, Creedmore, 6.5x47 Lapua. A long barrel 308 will get 3000fps pretty easily with a 155. The smaller 6.5's will shoot 130gr (.550 BC) bullets 2900ish and a 6.5x284 will shoot .600+ BC 140gr bullets in the 2900 to 3000fps range. I would bet the 308 barrel would outlast all of them too.

We've measured BCs of lots of .308 bullets in the 150-155 grain range. Highest BC we've measured was .435, in spite of claims of much higher BCs. We've also failed to get anywhere near published velocities without excessive pressures.

A rare .308 might actually push a bullet with a .500 BC at 2900 + FPS, but I doubt that you'll get anywhere near that with a factory Savage. A 155 grain bullet is more likely to give 2700 fps with a BC of .435. This is marginal at 1000 yards and far less promising than a 140 grain bullet (BC = 0.600) at 2900+ fps.

 

[Truc]

I pushed the 7mm, but I am building a 6.5 Rem Mag, only going in this direction because I got a Tikka T3 for a very good price and didn't want or need a 264 Barrel burner for under 300 yds. Since I own a 350 mag I have lots of brass plus form dies I can make brass from any standard Mag case

 

[MudRunner2005]

If you want to know anything about the Tejas calibers, contact Brad Stair in Ogden, Utah. He's the creator of them. He's a really nice guy. I talked to him a couple months back, about a 7mm STW Tejas, and he's a really cool guy.

Accurate Long Range Hunting Rifles - Cross Canyon Arms

 

[IdahoCTD]

I've had a couple 28-30" barreled 308's that would shoot over 3000fps with 150/155gr bullets. I also have a shooting buddy that has a 308 now with a 30" barrel that also shoots 155's over 3000fps and has had numerous others that would do the same thing. Why you cant seem to get that velocity I don't know but I've seen it numerous times.

I haven't tested the BC of all of the 155gr 308 bullets but I find it hard to believe that none are over .435 when there are numerous bullets with stated BC's well over that. While many companies inflate BC's I find it hard to believe that there are that many with the wrong BC especially when a Nosler BT is relatively close to .435.

 

[emn83]

We've measured BCs of lots of .308 bullets in the 150-155 grain range. Highest BC we've measured was .435, in spite of claims of much higher BCs. We've also failed to get anywhere near published velocities without excessive pressures.

A rare .308 might actually push a bullet with a .500 BC at 2900 + FPS, but I doubt that you'll get anywhere near that with a factory Savage. A 155 grain bullet is more likely to give 2700 fps with a BC of .435. This is marginal at 1000 yards and far less promising than a 140 grain bullet (BC = 0.600) at 2900+ fps.

just a note on the 155gn Sierra Palma 308, I use Litz data from the shooter app, and the listed BC there is 447, and I'm shooting 2975 out out of a 26in bbl with no pressure signs. The drops are right on, using that BC and velocity

 

[Michael Courtney]

I've had a couple 28-30" barreled 308's that would shoot over 3000fps with 150/155gr bullets. I also have a shooting buddy that has a 308 now with a 30" barrel that also shoots 155's over 3000fps and has had numerous others that would do the same thing. Why you cant seem to get that velocity I don't know but I've seen it numerous times.

I haven't tested the BC of all of the 155gr 308 bullets but I find it hard to believe that none are over .435 when there are numerous bullets with stated BC's well over that. While many companies inflate BC's I find it hard to believe that there are that many with the wrong BC especially when a Nosler BT is relatively close to .435.

Independent measurements consistently show manufacturers' BC claims to be exaggerated for .308 bullets in the 150-155 grain range. A few examples:

155 AMAX Hornady BC 0.435; Litz BC 0.424
155 Palma Sierra BC 0.504; Litz BC 0.417
150 NBT Nosler BC 0.435; Litz BC 0.406; Courtney BC 0.381
150 TSX Barnes BC 0.428; Courtney BC 0.349
155.5 FBBT Berger BC 0.464; Courtney BC 0.430

Can you cite any independent verifications for BC claims above 0.500 for .308 bullets in this weight range?