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Post by Deleted on Nov 2, 2016 18:35:36 GMT -5
I have researched the specifics of 5R but I'm curious if the same twist rate in 5R would stabilize better than same twist rate in a standard rifled barrel.
Reason I ask is I have 1-10" 7 mag with 5R rifling and want to try the 150 Barnes long range bullets or the Nosler long range AccuBond bullets. Just curious if the 5R would have a better chance of stabilizing them than standard rifling?
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Post by Hank on Nov 2, 2016 20:10:45 GMT -5
No it won't have a better chance , a 1-10 is a 1-10,, but I think you will be ok shooting 150 grainers from your 1-10 twist barrel... give them a try and see what happens...
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Post by hillbill on Nov 2, 2016 20:36:16 GMT -5
yes I think you will be fine with 150s
I really don't know if there is a real advantage to 5 R or if it's just a selling point but without a doubt most 5 Rs shoot very well, some say they foul less and clean easier but?
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Post by Deleted on Nov 2, 2016 21:22:23 GMT -5
Thanks guys, I been researching a lot and it's mixed reviews.
I wanted to try some of the newer long range bullets but I've been reading that they take a 1-9.5" or faster to stabilize. I'd like try Nosler long range AccuBond 150, 162, and 175 just didn't want to buy them and find out it won't stabilize.
Thanks again.
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Post by Hank on Nov 2, 2016 22:22:21 GMT -5
Your original post said 150 grain bullets, once you go above that you might indeed need more twist.. start out with the 150's and see what happens. If they shoot good go to the 160's and so on... I would start with factory loaded offerings if available and if good results are found move to some hand loads....
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Post by deadeye on Nov 3, 2016 22:51:00 GMT -5
I agree with the above post about 5r & bullet stability. the 5r will not stabilize any better...this was also tested by bryan litz & documented in his applied ballistic's books.
here is some help on bullet twist calculating & such.
riflebarrels.com/support/faq/#twist rates
www.bergerbullets.com/twist-rate-calculator/
the berger link imo is very good tool as you can input the specific's like bullet length, fps & el & such to check for the stability chart to keep it up above 1.5 for your conditions.
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Post by rallyzcamaro on Dec 13, 2016 20:39:12 GMT -5
I have read about 5R rifling in custom barrels and the claim is there is less jacket distortion with less (slightly wider) grooves. Also, the odd number of grooves disperses the pressure more evenly on the bullet. i.e.there is no opposing pressure at any of the grooves. I have a Bartlien 5R barrel in 6.5×47 and love it.
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