rifling twist on a .223
i have a savage 110e. how do i find out what the twist is on the rifling.
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They have twist info. on Savage website. 0 -
It is 1-9" 0 -
You could also take your cleaning rod, jag, and patch and push it down the bore. Mark the rod so you know when it has made one revolution. Measure the linear distance the rod traveled, i.e. 9 inches, and there you have it, 1 turn in 9 inches. If it measures 12 inches for 1 revolution, you have a 1/12 twist. 0 -
If it is the 1/9 twist find the 62 grain that is what works best.
1/12 twist use the 55 grain or less.0 -
Ted,
This is the second time that I've posted this for you. You need to read this as it is in direct opposition to what you are posting and it is from a major barrel manufacturer, whose business it is to establish twist rates and bullet performance. Merry Christmas!
Recommended Twist Rate - Courtesy of Shilen
The information below will help you select the best barrel twist for your specific needs, providing of course there are multiple choices. If you'll be shooting one bullet weight, choose a twist from the chart just fast enough to stabilize it. Too fast a twist simply overspins the bullet and may result in reduced accuracy. On the other hand, a twist too slow for any bullet will likely produce instability, keyholing and rotten accuracy. So if you're going to be using several bullet weights, be sure to select a twist that will stabilize the heaviest one, since lighter bullets will also be stabilized.
By way of explanation, the numbers in the "Twist" column indicate how far the bullet must travel through the bore to make one full revolution. This is determined by the rate of rotation of the rifling. For example, a 9"-twist barrel spins the bullet one full turn when it passes 9 inches through the bore. In a 16"-twist barrel, the bullet makes one revolution in 16 inches. So at the same bullet velocity, the 9" twist is faster (spins the bullet faster) than the 16" twist. Consequently, as the chart reflects in the .224 CF section, the 9" twist is necessary for stabilizing heavier bullet weights.
Again looking at the .224 CF section, if you're planning to shoot 55-grain bullets, the 14" twist is ideal. This twist is also the best choice for 52- and 53-grain match bullets driven at moderate velocities. But if you're also contemplating shooting a 60-grainer, go with the 12" twist, since it will stabilize all the bullets you'll be using. As you can see from the 15" and 16" twists, higher velocities also spin the bullet faster and may enable a slower-than-recommended twist to stabilize a marginally overweight bullet. However, this is tricky stuff best left to those who are highly experienced in operating at the ragged edge of stability and sanity.
The basic principles just outlined apply to all the calibers below. But, if you have questions or need a recommendation, let us know.
.224 CF
8" For bullets heavier than 70 gr.
9" For bullets up to 70 gr.
12" For bullets up to 63 gr.
14" For bullets up to 55 gr.
15"* For bullets up to 55 gr. driven 4,100 fps or more
16"* For bullets up to 55 gr. driven 4,300 fps or more
http://benchrest.com/sst/shilentwist.html0
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