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20 VT twist rate
I’ve read a bunch of threads on this. I plan to use a barrel in the 18”-20” range.
Is there any downside/accuracy loss going with a 11 twist instead of 12 twist for the 32 vmax to 40 vmax bullets? Is there any downside/accuracy loss going with a 10 twist instead of 11 twist for the 32 vmax to 40 vmax bullets? Edited to add: What about an 9 or 8 twist if I want to play with 55 bergers in addition to the 32-40’s? Best, Shaun Last edited by shaun1826; 05-19-2022 at 03:19 PM. Reason: Adding info |
#2
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If you can get one or the other in the contour and manufacture you like that would be the one I bought first. |
#3
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This has been hashed and rehashed numerous times over the past few years.
Generally the 1/12 twist will not stablize and 20 cal bullet over 39 grains. The majority of 20 cal users go with the 1/11 twist, however if you want a 1/10 it would serve you well also. |
#4
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I agree with Bill K. Both of mine are 10 twist and handle 40 grainers without issue.
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#5
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I contacted Hornady and they said between 10 and 14 twist is good for the 32 and 40 vmax. I wonder if there is a bit of margin of safety built in on the fast end spec and if 9 twist would work on the 32? That would open up the possibility of playing with the Berger 55.
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#6
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A 9" twist barrel should allow for the use of the 55 grain bullets. -BCB
__________________
I miss mean Tweets, competence, and $1.79 per gallon gasoline. Yo no creo en santos que orinan. Women and cats will do as they please. Men and dogs should relax and just get used to the idea. Going keyboard postal over something that you read on the internet is like seeing a pile of dog crap on the sidewalk and choosing to step in it rather than stepping around it. If You're Afraid To Offend, You Can't Be Honest - Thomas Paine |
#7
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I doudt it would even stabilize a 32 grain 20 cal bullet |
#8
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Shaun: The 20 Vt is one fine cartridge and with a 1/11 or even a 1/10 will work wonders with the 32-40 grain bullets, into the 400yrd range.
Now, really, if you want to start shooting heavier one's up in the 50 grain or more class, then move up to a different cartridge. Something like the 204 R or maybe a 20 PPC. |
#9
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The only 20 caliber I've considered them in is my 20-250, and that's with an 11" twist barrel. I actually bought a small stash of the Hornady heavy for caliber bullets when they had them available. I doubt that the barrel will outlive them. The 50 works ok to iffy for it, and it's much easier for me to just use a 22-250 with 50-52 grain .224" bullets. So far the only thing that has impressed me about the 20-250 is how quickly it eats barrels. Yikes......!! I played with swaging a shorter heavy 20 caliber bullet but I never got into it very hard. It messed big time with my 38 grain hp bullet die settings so I gave it up. -BCB
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I miss mean Tweets, competence, and $1.79 per gallon gasoline. Yo no creo en santos que orinan. Women and cats will do as they please. Men and dogs should relax and just get used to the idea. Going keyboard postal over something that you read on the internet is like seeing a pile of dog crap on the sidewalk and choosing to step in it rather than stepping around it. If You're Afraid To Offend, You Can't Be Honest - Thomas Paine Last edited by Bayou City Boy; 05-19-2022 at 11:13 PM. |
#10
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I thought about a 20-250, but then again, I thought no, it is somewhat overbore and would eat the throat out too fast.
I stick with the 20 VT, 20-223ai and just have fun. If I do move into the 250 case, I will stick to my old tried and true 22-250, which has served me for many a year. |
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