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Subject Topic: 223 Rem 8" Twist Adventure Post ReplyPost New Topic
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hoghunter
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Posted: 15 November 2017 at 5:41pm | IP Logged Quote hoghunter

I broke down an bought a 223 Tikka T3X Lite in 223 Rem.
This rifle has an 8" twist. I have several 223 Rem all
with 12" twist so this was a new adventure for me using
the 8" twist.

The 50 and 55 Nosler BT's would not consistently group
after trying various powders and charges.

I tried the 60 grain Nosler BT and 60 grain Hornady V
max. It took some load development and I finally got some
acceptable groups averaging .721" at 100 yards. This
rifle seems to shoot more consistent at 2850 f/s than
with the higher velocity loads. I don't need to shoot
beyond 200 yards so this should work for me.

I really like the rifle. The trigger is great, the action
the smoothest I ever experience and it handles well for
field use. The feature I like the most is the Sako style
extractor, far superior to the Remington press fit
extractors.

Going to try it out on some predators this winter.

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Old Ranger
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Posted: 15 November 2017 at 10:06pm | IP Logged Quote Old Ranger

Through a lot of trial and error, found that most 55gr
stuff will not stabilize in a 1:8" bore. 60gr Hornady V-
Max is superb as is their 62gr FMJ. Heavier rounds with
IMR 3031 or 4320 really sang. Switched to Hornady 55gr
spire point boat tail with cannalure with either H335 or
Rx7 were real shockers. 20.5gr of Rx7 shot under an inch
with a five shot group from a 16" AR15 and a small 4x
scope. Figure the velocity in the neighborhood of around
3100fps.

Last post in a thread here on 223 twist rates has a site
listed for a formula to calculate twist business. The
abovementioned 55gr SPBT rated a 3.67 with my gear.
Anything above 1.5 is fair, but above 3 is good and
stable.

http://www.bergerbullets.com/twist-rate-calculator/

Edited by Old Ranger on 16 November 2017 at 11:55am


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hdwhit
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Posted: 12 December 2017 at 3:51pm | IP Logged Quote hdwhit

I have .223/5.56 rifles with barrels of 1:12, 1:10 & 1:9 twist. I had tried faster twist barrels, but when I got my Nosler 35 grain bullets above 3500 fps and my Hornady 50 grain SX bullets above 3000 fps in them, I started getting whisps of grey "vapor" at about 30-50 yards and no holes in the target, so I drew the line at 1:9.

My standard load is a Hornady 60 grain Spire point bullet (pre-dates the A-Max & V-Max bullets, but still being made) launched at about 2,850 fps out of an 18 inch barrel so 1:12 through 1:9 are fine for it.
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Old Ranger
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Posted: 13 December 2017 at 6:53am | IP Logged Quote Old Ranger

Sounds like we all need to use longer, more stable
bullets and leave the light, unstable short ones to the
.218 Bee and such. If this appears too simple an approach
to the solution, well perhaps it is. But again, most
successful ways to resolve things are.

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hoghunter
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Posted: 13 December 2017 at 6:14pm | IP Logged Quote hoghunter

The two powders that I tried were H4895 and Varget. Both
shot well enough, the 4895 a little better at 24.0 grain
with the 60 Vmax.

I'm fairly satisfied with this load. Did some field
practice shooting off my cross sticks and was able to keep
6 of 6 shots in an 1 1/2 circle at 100 yards. At 200 yards
I was hitting about an 1" low but 6 of 6 shoot all in a 2
1/2" circle which will work for me for predators this
winter.

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Buffalogun
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Posted: 15 December 2017 at 7:39am | IP Logged Quote Buffalogun

hoghunter,

You might want to try a box of Sierra's 65 gr. SBT Gameking bullets. Your rifle will thank you for it! Those lipstick bullets aren't the only accurate bullets out there.



Mike

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hoghunter
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Posted: 15 December 2017 at 6:56pm | IP Logged Quote hoghunter

Buffalogun wrote:
hoghunter,

You might want to try a box of Sierra's 65 gr. SBT
Gameking bullets. Your rifle will thank you for it! Those
lipstick bullets aren't the only accurate bullets out
there.



Mike


Yea, those look real interesting with a high BC. Sierra
bullets have always been good to me. Just might do that
later but for now I want to get into the field and start
hunting predators since I have something that will work.
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