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.30-cal-Barrel-Twist-question

 
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  #1  
Old 03-23-2007, 07:59 PM
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.30-cal-Barrel-Twist-question

Hey-guys;-I-have-a-question-regarding-what-twist-rate-would
-work-best-for-.30-cal-using-110grn-&-125grn-Bullets.
-I-will-be-using-a-300-WSM-.333-tight-neck-throated-for
-the-110grn-V-Max-and-125grn-Ballistic-Tip-bullets.
-I-will-only-be-shooting-those-bullets;-so-I-am-thinking
a-1-14-twist-will-work-perfect.-Please;-I-need-some
advise-on-what-twist-rate-would-be-best.-I-know-I-wont-be-able-to-shoot-the-VLD-bullets
but-that's-ok.-I-have-a-1-10-twist-barrel-right-now;
but-I-am-thinking-a-slower-twist-would-work-better
for-the-110-and-125-grn-bullets.-This-rifle-will-be-strictly
for-100-to-1000-yard-varmint-shooting.-It-will-shoot-the
110grn-V-max-at-4150-fps-and-the-125grn-Ballistic-Tip-at-4050-fps-out-of-a-30"-pipe.-This-will-be-a-flat-shooting
rig.-I-am-thinking-the-125grn-BT-will-be-the-bullet-I
will-use-because-it-has-a-pretty-good-BC-for-a-poly
tipped-bullet-and-traveling-at-over-4000-fps-will-be-a-
real-varmint-buster-out-to-1000-yards.

Wildcat
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  #2  
Old 03-23-2007, 08:49 PM
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Re: .30-cal-Barrel-Twist-question

I think that alot of guys are using 1-15 and 1-16 twist barrels for shooting short range BR comps with the 30 bench rest caliber. I have heard alot about Koystien (sp) barrels and that they have a big following in the 30 BR caliber crowd , might be worth a call to them or haunt some of the BR boards and ask their what twist they use.

I know most of those guys are shooting custom bullets in the 100-150gr class.

But I would say that a 1-15 would be plenty.

Have you run the numbers for those light pills at that speed and ant long range? I was kinda wondering about that myself. I heard about a guy shooting 155gr Palma bullets out of a big 30 mag at around 4000 fps and doing well at informal "sniper" comps out to 1000yds
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  #3  
Old 03-23-2007, 09:04 PM
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Re: .30-cal-Barrel-Twist-question

Know-haven't-heard-anything-about-the-155grn-Bullets.
-Will-Krieger-do-a-1-15-twist-barrel?
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Old 03-24-2007, 05:39 PM
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Location: Wilmington NC
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Re: .30-cal-Barrel-Twist-question

Go to richards stocks in VA. H advertises on www.6mmbr.com He is shooting exactly what you are talking about. it is a 300 WSM shooting the 125 Btips at around 4000 fps. I think he is using a 15 twist.

A cut rifled barrel mftr can make any twist.

The 30 BRs are shooting 17 twist with the 118 FB bullet and 115/16 twist with the 125s. However you cannot go by that. The FB tend to go one twist slower than the boattail.

I have a 17 twist Kostyshen barrel with 118 BIBs and it is a one holer at 100.

BH
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  #5  
Old 03-24-2007, 07:07 PM
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Re: .30-cal-Barrel-Twist-question

BountyHunter-that's-were-I-got-the-idea-to-build-this-rifle.
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  #6  
Old 03-24-2007, 10:24 PM
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Re: .30-cal-Barrel-Twist-question

I-did-some-reserch-on-Noslers-and-Bergers-bullets-site.-I-can-shoot-any-of-their-bullet-from-110-to-150grns-out-of-
a-1-15-twist-barrel.
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  #7  
Old 03-25-2007, 07:44 PM
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Location: Wilmington NC
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Re: .30-cal-Barrel-Twist-question

I will make one recommendation. Go to a .336 neck. Saves lot of neck turning and no need to go any tighter.

My comp guns are .336

Think I would go with whatever twist Richard is using on his 300 WSM and 125s. He seems to have it worked out and smoking.

BH
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