Smokeless
New member
Originally Posted By: VarminterrorOriginally Posted By: SmokelessOriginally Posted By: EasternPredHunterWhat bullet weights stabilize properly out of a 1:8 twist 223 barrel? I would like to shoot everything from 55-77 grain. I was told 1:8 would be perfect for this and 1:7 was an overkill. What do you guys think?
That's fine, but this was you original post. I was just trying to clarify. It says nothing about barrel length.
With a -8 twist you will be fine. Regardless of barrel length, to a point.
Not just trying to argue here, but I think barrel length is a fair consideration to mention when it comes to AR twist selection. Most rifles don't have such a wide range of barrel lengths available, and we all know how much barrel length effects the 223/556. A guy doesn't HAVE to go with a one-size-fits-all rule for AR's, because in my experience, one rule doesn't apply for all barrel lengths.
I'd personally say that a 1:8" in a 24" tube is just robbing you of velocity, whereas a 1:8" in a 16" tube is next to necessary if you're planning on using 70-77grn pills. There's just so much difference in the cartridge between 2750fps and 3400fps, it's definitely fair to mention it. My "ideal" twists would be 16-18" in 1:8" or 22-24" in 1:9". Rather I suppose a 1:8.5" would suit quite well for any length, but personally, I'm cutting the tube to a certain length with a certain MV in mind and the barrel length isn't going to change thereafter, so why not match the twist rate specifically to the anticipated MV from that tube?
The question from the OP was about bullet stability, not velocity.
1-8 will stabilize to 77gr. just fine or 1-7 also. Barrel length has little to do with that in this case.
That's fine, but this was you original post. I was just trying to clarify. It says nothing about barrel length.
With a -8 twist you will be fine. Regardless of barrel length, to a point.
Not just trying to argue here, but I think barrel length is a fair consideration to mention when it comes to AR twist selection. Most rifles don't have such a wide range of barrel lengths available, and we all know how much barrel length effects the 223/556. A guy doesn't HAVE to go with a one-size-fits-all rule for AR's, because in my experience, one rule doesn't apply for all barrel lengths.
I'd personally say that a 1:8" in a 24" tube is just robbing you of velocity, whereas a 1:8" in a 16" tube is next to necessary if you're planning on using 70-77grn pills. There's just so much difference in the cartridge between 2750fps and 3400fps, it's definitely fair to mention it. My "ideal" twists would be 16-18" in 1:8" or 22-24" in 1:9". Rather I suppose a 1:8.5" would suit quite well for any length, but personally, I'm cutting the tube to a certain length with a certain MV in mind and the barrel length isn't going to change thereafter, so why not match the twist rate specifically to the anticipated MV from that tube?
The question from the OP was about bullet stability, not velocity.
1-8 will stabilize to 77gr. just fine or 1-7 also. Barrel length has little to do with that in this case.
