Building a 16" Remington 700 in .223; Want help selecting barrel

ShooterPHD

ShooterPHD

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I'm in the process of a custom project. Its a Remington 700 in .223, at the end of it all, it will be sporting a 16" barrel. Keep in mind I've already spoken with the CFC about barrel lenght and overall length, etc, etc... so I don't need any advice in the regard.

What I do need to know is; what is the number of rifling to get for my .223 (What works best with 60gr+ bullets)?

*I'm going to be using a straight, no taper, Pac Nor super-match CM barrel blank with a 1:8 twist.

Has anyone done this before?

Thanks Shooter :)

**I WANT TO KNOW THE NUMBER OF RIFLING NOT THE TWIST RATE (I've already decided on 1 in 8)**
 
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Shilen's website:
- 7" for bullets heavier than 70gr.
- 8" for bullets heavier than 70gr.
- 8"* Ratchet rifled 4 groove
- 9" for bullets up to 70gr.
- 12: for bullets up to 63gr.
- 14" for bullets up to 55gr.

So what is the procedure for getting approval for a 16 inch .223 Remington 700?
 
guntech said:
Shilen's website:
- 7" for bullets heavier than 70gr.
- 8" for bullets heavier than 70gr.
- 8"* Ratchet rifled 4 groove
- 9" for bullets up to 70gr.
- 12: for bullets up to 63gr.
- 14" for bullets up to 55gr.

So what is the procedure for getting approval for a 16 inch .223 Remington 700?
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no special procedure just build it and call firearms centre and give them the new specs of the firearm as long as the overall length is 26 inches or more but you cant go making a barel under 4 inches that would put it prohib i think but the above is for bolt action semi auto is a diffrent case
 
Weight has nothing to do with bullet stabilization. It is bullet length and velocity. For 60 grain match bullets. go 1:9" twist in a short barrel.

Or speak with Pac Nor if you are buying from them.
 
I'm NOT asking what TWIST rate to use. I've already decided on the 1:8. However, Pac Nor also allows you to select the number of rifling in the barrel. I was thinking 5 or 6 for the .223 but unsure. I was wondering if anyone has built a similar rig?
 
I very much doubt if you would be able to notice any difference based on the number of grooves.
 
I've read something about 5R rifling being more accurate that rifling with an even number of lands and grooves because having a groove opposite a land provides a place for the bullet to deform to as the land "squishes" it. Not sure if any human would be able to tell the difference, but something to look into.
 
I've herad great things about PacNor's 3 groove, but I really can't see anybody noticing a difference in the real world. Having said that, I've got two Rock 5R's and I love them!
 
I have read (but can't recall where) that there have been tests done every now and again over the past 150 years to try to find an answer to what you are asking. So far no one has come up with a meaningful result.

The shape of the grooves as well as the number, has been experimented with and gain twist becomes popular from time to time. As far as I'm aware the jury is still out.
 
ShooterPHD said:
I'm NOT asking what TWIST rate to use. I
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If you are going for accuracy, then why a 1:8 twist? Velocity with very long/heavy bullets that need that twist is going to be very low. Lighter bullets will be over stabilized with that twist. Typically, best accuracy is the minimum twist needed to stabilize a certain length bullet.
 
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