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Originally Posted by Steelhead
Oregonians have always suffered from reading comprehension.



I'm a Virginian there Senior Chief...

just happen to live in Oregon...

my reading comprehension is just fine...

my mind reading not so much....

on the other hand, how's your communication capabilities?


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My 1 in 9 twist on my factory Savage BVSS had no problem stabilizing any 80 grain bullet put thru it...so don't let that handicap ya if that is what yours has...

but if you are going to do a barrel, a 1 in 8 cost no more than the one in 9.... so go with the 1 in 8...or you can do what I did with my first 223 fast twist and go with a one in 7... I did that since that is what some of the military AR barrels where twisted at...so I thought what the hell...

The rifle got given away, but kept the barrel and had it rechambered to a 22.250....

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Originally Posted by HawkI
What he said, except the obvious...

I have a 1-9, but would do a 1-8 every time over the 1-9; I've never had issues with the 75 A-Max shooting great, but would hedge even more.
At the time, I barreled it for 69 grainers.

Sako used a 1-12 on their .223's and 222 Mags, not that it gains anything over a 1-14. Remington used the 1-14.



I didn't know that about Sakos...and I have noticed a difference between the 1 in 12 and the 1 in 14....

Likewise the 1 in 10 I mentioned that I loved was built with 68 and 69 grainers in mind....which it shoots well indeed.


But again...the 1 in 8 digests everything I put in it.....


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Yeah, but take your 1-12 to Texas with those 68-69'ers and you won't! I think 60-65grs. is about all the universal goody a 1-12 gets here.

At my present eles, temps and density, I've had NO issues with my 1-9 and bullets up to 77 grs; some of which can spin easier than the 75 A-Max.

I don't think .478 cases can do much better with bullets heavier/slicker than the 75 A-Max, unless we're talking maybe a 5.5x50 Magnum (I wish those cases weren't dodos)....meaning I'd not go faster than 1-8 unless a 22-250 case or larger. Even then Ive seen the 1-8 Rocket cluster 1/2 MOA at 300 yards with the 90 VLD.

Always hedge on the twist....

Last edited by HawkI; 10/24/14.
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Hedge on the twist is probably sound advice. But odd you mention Texas. Don't know about the temps and density but the last time Steelhead gave me crap about altitude I checked it. Where I was hunting in Texas ( both places) was higher in Elev. than I am here!


Oh, and the 68-69 grainers get shot in the 1 in 10....Though I had a 1 in 12 that shot them REALLY GOOD.....even I was confused at that....

Last edited by ingwe; 10/24/14.

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I just wonder if it would make more sense to take a 204 Ruger reamer and run it in far enough that a 223 case could be sized to fit. The Practical seems a little short in the neck to me.
Maybe grind down a set of 204 dies?
I am getting a 204 custom reamer for a conventional re-do of a problem child Ruger 204, maybe when I am done with that I will conduct the experiment on another rifle.


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6x45 is just the .223 necked up to .243 correct?


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Tom,

Not that it makes any difference in this thread, but I keep wondering wonder what references you use for finding altitudes.

Sonora, Texas is at 1825 feet, which is only 5 feet higher than the LOWEST place in Montana, where the Kootenai River flows into Idaho. Even the highest point in Texas, Guadalupe Peak, is only slightly higher than Fort Benton on the Missouri River.

You also once posted that the Prickly Pear shooting range is at 4000 feet, but the Helena airport, down on the valley flats, is at just under 3900 feet, and the range is a noticeable drive uphill into the mountains. The USGS topographic map puts the shooting range's elevation at just about 5300 feet.


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I checked Sonora and Van Horn Texas on google and it had them both over 4000 ft! cry

You mean I can't even trust the innanet???? shocked

Last edited by ingwe; 10/25/14.

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I just checked again today John, Sonora has risen..Instead of your 1825 ft. It is now at 2129....significantly down from the 4023 I first found it at...but its trying to get better.... grin


Maybe we should go down just to see the ebb and flow of things.... wink



Van Horn is still at 4000 ft. which explains why when I aimed at the javelinas eyeball, I hit him in the eyeball....

Last edited by ingwe; 10/25/14.

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Originally Posted by Mule Deer


You also once posted that the Prickly Pear shooting range is at 4000 feet, but the Helena airport, down on the valley flats, is at just under 3900 feet, and the range is a noticeable drive uphill into the mountains. The USGS topographic map puts the shooting range's elevation at just about 5300 feet.




Prickly Pear was a WAG...the top of Mac pass is only 6500...so I took a shot at it grin


Last edited by ingwe; 10/25/14.

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Well, that explains a lot.

As a matter of fact I just rechecked the highest point in Texas, and one Internet source gives it in feet and one says its exactly the same in meters. Apparently it's actually over 8000 feet--but it's a long way from Sonora.

I do know the highest "peaks" in the Hill Country are around 2500 feet--but that's from being there with a GPS. The really low places are in East Texas. A few years ago I hunted near Cuthand, a tiny town in the northeast part of the state, not far from Texarkana, and the elevation was under 1000 feet. Of course, some parts of Texas are at sea level!


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Originally Posted by Mule Deer
Well, that explains a lot.

As a matter of fact I just rechecked the highest point in Texas, and one Internet source gives it in feet and one says its exactly the same in meters. Apparently it's actually over 8000 feet--but it's a long way from Sonora.




Same in feet as in meters.....I think you should check your source tomorrow and see if the numbers change! laugh

Anyway...Im gonna shoot some pigs in Florida come February ...in two different places...but I think there I can personally measure the elevation with my dial calipers wink


If it aint under water, it'll be above see level.




Gotta say though, if figures are correct I was surprised with Van Horn.


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Originally Posted by teal
6x45 is just the .223 necked up to .243 correct?


Correct


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Originally Posted by Steelhead
Originally Posted by teal
6x45 is just the .223 necked up to .243 correct?


Correct


Thank you - wanted to make sure I wasn't confusing it with some version of the 6.5x47 Lapua.



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Originally Posted by ingwe
Originally Posted by Mule Deer


You also once posted that the Prickly Pear shooting range is at 4000 feet, but the Helena airport, down on the valley flats, is at just under 3900 feet, and the range is a noticeable drive uphill into the mountains. The USGS topographic map puts the shooting range's elevation at just about 5300 feet.




Prickly Pear was a WAG...the top of Mac pass is only 6500...so I took a shot at it grin



This is exactly why I've been telling you to hedge....you are being deplorable.

And I hope you're still not contemplating ruining perfectly good 222 cases...

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And 8 twists spin 40's just fine.


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ingwe Offline OP
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Well...Im taking the 8 twist to Florida at sea level + 6 ft. or so...


To eliminate any possible problems....


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Originally Posted by Mule Deer
Tom,

The .20/.222 is also known as the .20 VarTarg Turbo, which may or may not make you feel like it's something special.


No offense, but they're not the same and the .20/.222 is not known as the VarTarg. They are different cartridges, though load data is prolly close to identical. To form the .20-.222, you just neck it down with a bushing die, load and fire. Its kind of an odd looking cartridge 'cause the neck and bullet are so long, but there's no brass forming involved and its a flat shooter. I have one, but have never fired it; just repeading what I've read. With the VarTarg Turbo, you have to trim .100 off the mouth and blow the shoulder out a tad (change the angle).

Jordan

Last edited by RobJordan; 10/25/14.

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I think JBs post was tongue in cheek...


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