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What rate of Twist do you guys prefer for the .280 Remington. I have been doing some reading and I have seen everything from 1/10", 1/9.5", 1/9.25", 1/9". Some seem to thing the 1/9.25" is the Sweet spot for 140-160gr projectiles. What say you?


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1-9" or 1-9.25", no slower.

MM


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IIRC the SAAMI standard for the cartridge is 10". My rifle has a custom barrel with 9" twist.

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1-9" will give you options.



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Originally Posted by jasonkjasonk
1-9" will give you options.



Can you explain, for the ballistically retarded? confused
fast or slow, which is good for what?


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Fast or 1-8"-for 160 thru 180, 1-9" good for bullets ranging 140-160-175-and even 180 Berdgers,slower twist like 10" tru 14" 120 thru 140 gr bullets, a 9" works pretty good with most .284 bullets the longer the bullet the faster you need to twist it most of the time!

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I have always wondered why a 1 in 10 twist is the accepted twist on a 270 by nearly everyone but hardly anyone thinks it is the proper twist for a 280. Even more puzzling is two of the twists often mentioned for the 280 are 1 in 9 and 1 in 11. confused

I had a 280 once with a 1 in 10 Hart barrel and it was a good shooter with bullets up through 160 grain and was outstanding with 140s. If I was ever to own another 280, I won't for personal reasons, it would have a 1 in 10 twist if at all possible.


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All Remingtons in 7mm are 1-9.25" regardless of chambering........

Makes for a bit more flexibility; Sako's used to be 1-10" and they worked too, though.

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Originally Posted by MontanaMan
All Remingtons in 7mm are 1-9.25" regardless of chambering........

Makes for a bit more flexibility; Sako's used to be 1-10" and they worked too, though.

MM


Remington list 1-10" for .280.

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You're right, Lou I doubled checked and they do list the 280 as 1-10".

The 280 is an exception in Remington's line......hard to know why.

Unless the intent is to use bullets > 160 grains on a regular basis, the 1-10" works........after all, 270's are 1-10".

I imagine they've got some +/- in the spec too.

MM


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I noticed Remington did 1-10" for .280 a while back and looked up other makers. Browning, Remington, & Weatherby all do 1-10" for .280. Ruger is the only one that does 1-9.5" for .280.

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I noticed in The Nosler Reloading manual 4 or 5. That All the 7mm test barrels had a 1:9" twist. From 7-30 waters to 7mm Weatherby.

It's almost like the gun manufactures, and the bullet manufacturers have a different opinion.

Last edited by MarkG; 01/10/08.

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All Remingtons in 7mm are 1-9.25" regardless of chambering........


That is a rather broad statement! smile My gunshith told me that depending on what year it was made, you could get Remmy's in 1~9:; 1~9.25", and 1~9.5

I once owned a European rifle in 7mm Mag. It had a 1~11" twist. It would not shoot anything above 140's worth a hoot. frown I hated it. smile

If one is concerned about optimum twist rate, one would be well advised to get a copy of Speer #8 manual. They have a chart in there specifying optimal twist.

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1-9"; for me anyway.




The 280 Remington is overbore.

The 7 Rem Mag is over bore.
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I have to agree with all the manufacturers on this one, and give me a 1 in 10" all day long.

It will spin everything but 175`s.


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Originally Posted by Grasshopper
Quote
All Remingtons in 7mm are 1-9.25" regardless of chambering........


That is a rather broad statement! smile My gunshith told me that depending on what year it was made, you could get Remmy's in 1~9:; 1~9.25", and 1~9.5

Grasshopper


Check the current catalog........

The 280 is the only exception I can find. And I really see no reason for that to be any different than a 7-08, for example, as the 280 is equally, or more likely to shoot bullets on the heavier side of the scale.

When in doubt, I'll err to the faster side.

Can't be certain how long it's been that way, just know how it is now.

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Tim: Had 10"'s. Not for me. Fast twist is a good thing... smile

Besides,a good bullet will still shoot well with a faster twist.The way bullets are built today(longer due to monolithic copper construction, or heavy copper jackets)the faster twist is likely to be more flexible,and shoot well with a broader range of bullets. Think this is why Nosler uses 9" twist in all the 7mm's as posted above.

Last edited by BobinNH; 01/11/08.



The 280 Remington is overbore.

The 7 Rem Mag is over bore.
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Thankfully, I have more than 1 rifle.


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Ditto, Tim.

I have a 1 in 9 for 175s...

Wondering if a 1 in 11 wouldn't turn in slightly higer speeds for 120s--generally speaking.


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Yes..............and lower pressures. A 1 in 11" will spin up to 150`s.

Monolithics excluded.

I have no input on something I do not use.


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