New Hornady 6.8 SPC 120gr SST

[valvesinmyhead]

This will be a great hunting round. On the shelves now.

http://www.cheaperthandirt.com/72039-1.html

[Cheesehead]

Looks like a perfect deer round. I wonder if the bullet is available as a reloading component. That would be nice.

Cheese

[john keyes]

Jim Zumbo will not approve   

[HogFan]

Jim Zumbo will not approve   

I think ole' Jim learned his lesson about three years ago on this subject.

[valvesinmyhead]

Name: 6.8 SPC 120gr SST 150yds
Ballistic Coeff: 0.400
Bullet Weight: 120
Velocity: 2460
Target Distance: 150
Scope Height: 1.500
Temperature: 70
Altitude: 500

Ballistic Data
~~~~~~~~~~~~~~~
  Range  Elevation  Velocity   Energy     ETA         Drop      Max Y  10mph Wind Deflect
  0 yds   -1.50 in  2460 fps  1612 fpe  0.000 sec    0.00 in  -1.50 in    0.00 in
 25 yds   -0.25 in  2409 fps  1546 fpe  0.031 sec    0.18 in  -0.55 in    0.02 in
 50 yds    0.62 in  2358 fps  1481 fpe  0.062 sec    0.73 in  -0.41 in    0.19 in
 75 yds    1.10 in  2308 fps  1419 fpe  0.094 sec    1.68 in  -0.17 in    0.50 in
100 yds    1.17 in  2258 fps  1358 fpe  0.127 sec    3.04 in   0.19 in    0.95 in
125 yds    0.81 in  2209 fps  1300 fpe  0.161 sec    4.83 in   0.66 in    1.52 in
150 yds   -0.00 in  2161 fps  1244 fpe  0.196 sec    7.07 in   1.26 in    2.22 in
175 yds   -1.27 in  2113 fps  1189 fpe  0.231 sec    9.77 in   1.99 in    3.04 in
200 yds   -3.02 in  2066 fps  1137 fpe  0.267 sec   12.94 in   2.85 in    3.98 in
225 yds   -5.25 in  2019 fps  1086 fpe  0.303 sec   16.61 in   3.86 in    5.03 in
250 yds   -8.05 in  1973 fps  1037 fpe  0.341 sec   20.83 in   5.04 in    6.29 in
275 yds  -11.31 in  1927 fps   989 fpe  0.378 sec   25.52 in   6.36 in    7.57 in
300 yds  -15.19 in  1882 fps   944 fpe  0.418 sec   30.84 in   7.87 in    9.10 in
325 yds  -19.74 in  1838 fps   900 fpe  0.458 sec   36.81 in   9.59 in   10.84 in
350 yds  -24.97 in  1795 fps   859 fpe  0.499 sec   43.47 in  11.52 in   12.79 in
375 yds  -30.91 in  1753 fps   819 fpe  0.542 sec   50.83 in  13.69 in   14.93 in
400 yds  -37.57 in  1711 fps   780 fpe  0.586 sec   58.92 in  16.08 in   17.26 in
425 yds  -44.96 in  1671 fps   744 fpe  0.631 sec   67.75 in  18.73 in   19.77 in
450 yds  -53.12 in  1631 fps   709 fpe  0.676 sec   77.33 in  21.63 in   22.44 in
475 yds  -62.05 in  1591 fps   675 fpe  0.723 sec   87.69 in  24.79 in   25.26 in
500 yds  -71.76 in  1553 fps   642 fpe  0.770 sec   98.83 in  28.23 in   28.24 in
525 yds  -82.25 in  1515 fps   611 fpe  0.818 sec  110.75 in  31.95 in   31.36 in
550 yds  -93.91 in  1478 fps   582 fpe  0.869 sec  123.84 in  36.07 in   34.83 in
575 yds -106.47 in  1442 fps   554 fpe  0.920 sec  137.82 in  40.51 in   38.45 in
600 yds -120.20 in  1408 fps   528 fpe  0.972 sec  152.99 in  45.36 in   42.37 in
625 yds -135.13 in  1375 fps   503 fpe  1.027 sec  169.34 in  50.62 in   46.54 in
650 yds -151.23 in  1343 fps   480 fpe  1.082 sec  186.87 in  56.31 in   50.94 in
675 yds -168.52 in  1312 fps   458 fpe  1.139 sec  205.59 in  62.43 in   55.55 in
700 yds -186.99 in  1282 fps   438 fpe  1.197 sec  225.49 in  68.98 in   60.35 in
725 yds -206.65 in  1253 fps   418 fpe  1.255 sec  246.57 in  75.98 in   65.32 in
750 yds -227.98 in  1226 fps   400 fpe  1.316 sec  269.33 in  83.55 in   70.62 in
775 yds -250.78 in  1200 fps   384 fpe  1.378 sec  293.57 in  91.66 in   76.15 in
800 yds -275.14 in  1176 fps   368 fpe  1.441 sec  319.35 in 100.32 in   81.91 in

[valvesinmyhead]

Jim Zumbo will not approve   

I think ole' Jim learned his lesson about three years ago on this subject.

What? He doesn't think it is a good hunting caliber?

[valvesinmyhead]

Exit. Been working for me. Both were Hornady 110gr V-Max.






Exit

[Cheesehead]

At one time, 6.8 SPC ammo much more expensive then 308 or 30.06 ammo. Now it is close to the same cost. The cartridge continues to grow in popularity with more factory ammo options and firearms chambered.

Cheese

[john keyes]

externally it looks a lot like some of the old necked up 223 wild cats, but the shoulder is a little further back.

[yooper77]

externally it looks a lot like some of the old necked up 223 wild cats, but the shoulder is a little further back.

The parent cartridge for the 6.8mm Rem SPC is the old .30 Remington, which is essentially a rimless .30-30. Left to right: .30 Remington, 6.8mm Rem SPC, .308 Winchester, .223 Remington.

http://www.rifleshootermag.com/ammunition/remington_0303/

Nosler offers a .277 diameter in 100 and 110 grain Accubond for the 6.8 Rem SPC. I am going to try some in a 270 Winchester reduced load for my wife.

http://www.nosler.com/Bullets/Accubond.aspx

[FW Conch]

? What twist is needed to shoot the 120's in the 6.8 SPC ? - Thanks - Jim

[SHOOTALL]

Twist rate is a good ? I have seen rates from 9.5 to 11 . mine is 10 in 1 . If you read alot the 11 in 1 is all the rage now . One would think a faster rate would be better as bullets get more weight. BTW my gun likes the 110 hornady bullet and shoots the remington 115 fmj poorly.

[FW Conch]

Thanks SHOOTALL-the rifle barrel I'm thinking about getting for my Contender is 1 in 10. I could drop all the way back to the 80gr Barnes if it won't handle long bullets, & any Barnes bullet seems to do the number on whitetail. - Jim

[helotaxi]

Twist rate is a good ? I have seen rates from 9.5 to 11 . mine is 10 in 1 . If you read alot the 11 in 1 is all the rage now . One would think a faster rate would be better as bullets get more weight. BTW my gun likes the 110 hornady bullet and shoots the remington 115 fmj poorly.

Unless you're going way over SAAMI max OAL it isn't an issue.  The 1:11 was paired with the Spec II chamber to keep pressures down.  The 1:10 is standard with the .270 because it can run much longer bullets, and it doesn't need that extra bit of twist until you're in the 150gn range.  Even then it's a bit of overkill.  The 6.8 originally had a 1:10 twist because they built them off blanks meant for the .270Win.  Makes sense because there are so few .277 cal cartridges out there.

The 6.8 is handicapped with heavy bullets by two things 1) OAL 2) velocity.  OAL is an issue because of chamber length and magazine length.  Velocity is an issue because of bullet terminal performance.  With the limited muzzle velocity being even more limited by a heavy bullet, bullets that were meant to expand simply aren't going fast enough to do so when they get to their target.  Hornady discusses this to some extent in the 6.8SPC section of the 7th and 8th ed. manuals.  They mention the InterBond bullet working OK (though over length and only suitable for single loading) because it is a soft bullet.

The Speer 130gn flat base Hot-Cor is the heaviest bullet that can be loaded to magazine length and it has no problems with a 1:11 twist.