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-   -   lets disccuss rate of twist (https://www.huntingnet.com/forum/guns/316915-lets-disccuss-rate-twist.html)

bigbulls 02-09-2010 05:13 PM


so bigbulls, your saying that as velocity is increased centrifigul forces are greater.
Like a bicycle going 1 mph or 100 mph. the wheels still turn the same amount of rotations in 300 ft, but at 1 mph the bike wants to fall over but at 100 mph it would stay up without a rider .
I can buy that
Yes, that is correct. Except that the axis of the bullet is at 90 degrees from the axis of the wheel.


Does bullet weight have anything to do with it ?
No, bullet length is a factor but not bullet weight per given diameter.



LoL Like ol Larry or not he does liven things up.
That's akin to saying that an outbreak of food poisoning livens up the ER. :s11:

Sheridan 02-09-2010 07:54 PM

Didn't get it all, but thanks for that La$$y.


I won't tell anyone. Thanks again !

bigbulls 02-09-2010 08:02 PM

He's saying that it is far better to have more twist than you need than to have just enough. you can't have too much twist up unto the point that the bullet starts to come apart. It will allow you many more options in bullet weights, profiles, lengths, loading techniques and velocities when working up loads.

Cut'em Jack 02-09-2010 08:25 PM

In 2 barrels of all things similar except say 4" of length, will the extra length enhance the stability as well? Or only increase velocity? Or make no difference? Or both?

Sharpening my pencil......

Cut'em Jack 02-09-2010 08:51 PM


Originally Posted by Stabilized (Post 3573480)
4" of barrel length means less than dick,as far as projectile stability.

What chambering,which bullet,what twist rate?

7mm-08, 160 Barnes TSX, 9.25

Cut'em Jack 02-10-2010 04:39 AM

Funny....the guy is on here for 15 minutes, and people are posting as if there is no tomorrow to hear what he's got to say...

maybe someone should take notes.

bigbulls 02-10-2010 05:18 AM


In 2 barrels of all things similar except say 4" of length, will the extra length enhance the stability as well? Or only increase velocity? Or make no difference? Or both?
No. A bullet only needs 1-2 inches of barrel length to stabilize. Anything after that is just velocity.

What extra barrel length does is lessen the rigidity of the barrel. All other things being equal (Ie: quality cut chambers, quality barrel, crown, stock, etc... etc...)the shorter barrel will be more rigid and should be the more accurate barrel.



Funny....the guy is on here for 15 minutes, and people are posting as if there is no tomorrow to hear what he's got to say...
It's pretty much automatic at this point.

zrexpilot 02-10-2010 11:05 AM

whats up with manufactures not getting the correct twist rates on rifles
cz and rem and browning have a 1-16 twist rate for the hornet which we know is way to slow.
cz makes the 221 in a 1-12 = corect, the 222 in a 1-14 = ehh, and the hornet in 1-16= wrong all three of these need the 1-12 or faster even


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