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Joined: Jun 2006
Posts: 20
New Member
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OP
New Member
Joined: Jun 2006
Posts: 20 |
My current .338 Win Mag has a 1:11 twist. Is that fast enough to handle 225 gr Barnes TTSX or am I going to have to drop down to 210s? Thanks...
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Joined: Jan 2001
Posts: 10,897
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2001
Posts: 10,897 |
Gary, not sure if exactly what twist is needed, but if this is of any help... We're running 225 TTSX 's in my wife's Win. Model 70. using RL 22. Getting decent accuracy (around 1 to 1 1/4 3-shot groups), and very good velocity 2950 (according to my Chrony). I hope that might have been of some use! Good Luck memtb
You should not use a rifle that will kill an animal when everything goes right; you should use one that will do the job when everything goes wrong." -Bob Hagel
“I’d like to be a good rifleman…..but, I prefer to be a good hunter”! memtb 2024
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Joined: Jul 2001
Posts: 60,049
Campfire Kahuna
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Campfire Kahuna
Joined: Jul 2001
Posts: 60,049 |
While I'm pretty sure the 225's will stabilize, especially in Colorado, you might try JBM's twist-rate formula ( www.jbmballistics.com) which includes a factor for plastic tips.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
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Joined: Jun 2006
Posts: 20
New Member
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OP
New Member
Joined: Jun 2006
Posts: 20 |
Thanks for the input. It will be 225s until proven otherwise...
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Joined: Feb 2012
Posts: 743
Campfire Regular
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Campfire Regular
Joined: Feb 2012
Posts: 743 |
1:10 will do it... spins 225 accubonds and 250 accubond and partitions just right. I know I didn't help in answering your question on 1:11, but wanted to at least define a control limit. Shoot some 225's and see how they group, then you'll know. Sorry for the limp answer.
God Bless America!
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