Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Hunting
Elk Hunting
264 win mag for elk?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Jud96" data-source="post: 2168557" data-attributes="member: 69478"><p>The 156 Berger requires a 1-8 twist for full stability, even in a .264 Win Mag. Use Berger's stability calculator and it will show that a 1-9 twist is marginally stabile. The popular belief that speed can overcome twist rate is thrown around too much and is mostly a myth. In reality 300fps isn't going to change your twist rate. It takes a significant velocity increase like 2000fps+ in order to have 1" less twist be able to stabilize the 156gr Berger. Same with your 308 vs .30-06 claim. The .30-06 is 50-150fps faster than a 308 with equal barrel length. It's impossible for a 308 to need a twist rate thats 2-3" faster than a 30-06 just to stabilize the same weight bullets. They'll require nearly identical twist rates to achieve the same level of stability. I suggest messing around with Berger's stability calculator to get a better understanding of twist rates and just how little velocity affects whether a bullet is stable in a barrel or not. Twist rate and velocity and their combined affect on a bullet's RPM is way more of an issue than bullet velocity changing the twist rate required with the same given bullet.</p></blockquote><p></p>
[QUOTE="Jud96, post: 2168557, member: 69478"] The 156 Berger requires a 1-8 twist for full stability, even in a .264 Win Mag. Use Berger’s stability calculator and it will show that a 1-9 twist is marginally stabile. The popular belief that speed can overcome twist rate is thrown around too much and is mostly a myth. In reality 300fps isn’t going to change your twist rate. It takes a significant velocity increase like 2000fps+ in order to have 1” less twist be able to stabilize the 156gr Berger. Same with your 308 vs .30-06 claim. The .30-06 is 50-150fps faster than a 308 with equal barrel length. It’s impossible for a 308 to need a twist rate thats 2-3” faster than a 30-06 just to stabilize the same weight bullets. They’ll require nearly identical twist rates to achieve the same level of stability. I suggest messing around with Berger’s stability calculator to get a better understanding of twist rates and just how little velocity affects whether a bullet is stable in a barrel or not. Twist rate and velocity and their combined affect on a bullet’s RPM is way more of an issue than bullet velocity changing the twist rate required with the same given bullet. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Elk Hunting
264 win mag for elk?
Top