Can a bullet be overstabilized??
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Re: Can a bullet be overstabilized??
I tried to shoot some 110gr Vmax in my 300 win mag 1:10 twist barrel and they came apart on exiting the barrel and I saw dust about 25 yards out. It was load data from a manual but a call to Hornady said that it wasn't a good idea as that can happen.
ETA: Meant 110gr
I tried to shoot some 110gr Vmax in my 300 win mag 1:10 twist barrel and they came apart on exiting the barrel and I saw dust about 25 yards out. It was load data from a manual but a call to Hornady said that it wasn't a good idea as that can happen.
ETA: Meant 110gr
Re: Can a bullet be overstabilized??
I asked this same question to my go to guy for reloading questions and he says no, but some thin jacket light weight bullets will come apart and not make it to the target due to the excessive friction from the barrel. If you are punching clean holes you are ok. Your 120 amax should have no problems with a 1:8.5 twist. I shoot a lighter hornady in a 6br with a 1:8 twist.
I asked this same question to my go to guy for reloading questions and he says no, but some thin jacket light weight bullets will come apart and not make it to the target due to the excessive friction from the barrel. If you are punching clean holes you are ok. Your 120 amax should have no problems with a 1:8.5 twist. I shoot a lighter hornady in a 6br with a 1:8 twist.
Re: Can a bullet be overstabilized??
CWPINST and Cpt. KA are both correct. I don't think that twist you mentioned is too fast for a 120 grain bullet though.
I've shot M1 carbine 90 grainers from my 1:10 26" barreled 06 and they make it about 30 yards at most, usually less than 25. That's a more common side effect of "over stability"
CWPINST and Cpt. KA are both correct. I don't think that twist you mentioned is too fast for a 120 grain bullet though.
I've shot M1 carbine 90 grainers from my 1:10 26" barreled 06 and they make it about 30 yards at most, usually less than 25. That's a more common side effect of "over stability"
Re: Can a bullet be overstabilized??
i shoot 55 grain V-max bullets to 500 meters from a 1-7" Hart .223 barrel with decent accuracy. that twist is about double the suggested twist for that bullet. they don't quite hang with the 75 A-max but they don't do to bad if the wind isn't howling.
i shoot 55 grain V-max bullets to 500 meters from a 1-7" Hart .223 barrel with decent accuracy. that twist is about double the suggested twist for that bullet. they don't quite hang with the 75 A-max but they don't do to bad if the wind isn't howling.
Re: Can a bullet be overstabilized??
Yep, Captain Kick Ass is correct. From what I have read and a small amount of experience, overstabilization mainly effects when the bullet should "nose over" at the peak of the trajectory. The gyroscopic stabilization will keep the bullet from nosing down and it will start to fly in a nose up trajectory even though it's falling. This will definitely change the profile of the bullet as it's flying through the air and effect the BC. From what I have read, it causes a slight pressure differential because the air traveling over the bottom of the bullet is moving faster than the top of the bullet. Supposedly this results in the bullet having just a bit of lift, and can result in your bullet hitting higher than what the expected data should be. Anyway, in my little bit of experience with it, this does hold true out at longer ranges.
Yep, Captain Kick Ass is correct. From what I have read and a small amount of experience, overstabilization mainly effects when the bullet should "nose over" at the peak of the trajectory. The gyroscopic stabilization will keep the bullet from nosing down and it will start to fly in a nose up trajectory even though it's falling. This will definitely change the profile of the bullet as it's flying through the air and effect the BC. From what I have read, it causes a slight pressure differential because the air traveling over the bottom of the bullet is moving faster than the top of the bullet. Supposedly this results in the bullet having just a bit of lift, and can result in your bullet hitting higher than what the expected data should be. Anyway, in my little bit of experience with it, this does hold true out at longer ranges.
Re: Can a bullet be overstabilized??
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Tomcat088</div><div class="ubbcode-body">Supposedly this results in the bullet having just a bit of lift, and can result in your bullet hitting higher than what the expected data should be. </div></div>
And a little to the right in RH twist barrels.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Tomcat088</div><div class="ubbcode-body">Supposedly this results in the bullet having just a bit of lift, and can result in your bullet hitting higher than what the expected data should be. </div></div>
And a little to the right in RH twist barrels.
Re: Can a bullet be overstabilized??
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Tomcat088</div><div class="ubbcode-body">From what I have read, it causes a slight pressure differential because the air traveling over the bottom of the bullet is moving faster than the top of the bullet. Supposedly this results in the bullet having just a bit of lift, and can result in your bullet hitting higher than what the expected data should be.</div></div>
If the air beneath the bullet is moving faster, that area will have lower pressure, causing drop rather than lift.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Tomcat088</div><div class="ubbcode-body">From what I have read, it causes a slight pressure differential because the air traveling over the bottom of the bullet is moving faster than the top of the bullet. Supposedly this results in the bullet having just a bit of lift, and can result in your bullet hitting higher than what the expected data should be.</div></div>
If the air beneath the bullet is moving faster, that area will have lower pressure, causing drop rather than lift.
