Sionics Extreme Reduced Gas Port Barrel, Range Report

[WS6]

Yea I think so few people have appropriate optics for distance, no for shooting tight groups on 11.5 and below. That's red dot land. But have done it before and will pop something on it Sunday just for the record.

Shorter barrels are not inherently inaccurate.

PB

I understand that. I need at least 3x to shoot moa at 100+ yards. I'm an LPVO convert though after a few carbine courses. Debating which one to out on the 12.5 I'm getting. NX8, Atacr, etc.

[Pappabear]

I understand that. I need at least 3x to shoot moa at 100+ yards. I'm an LPVO convert though after a few carbine courses. Debating which one to out on the 12.5 I'm getting. NX8, Atacr, etc.

Those are some good options, id love 1-8 NF scope , one day ...

PB

[Iraqgunz]

As I recall the FBI barrel was around .070/.071 ish range. I think someone posted it elsewhere here.

[WS6]

As I recall the FBI barrel was around .070/.071 ish range. I think someone posted it elsewhere here.

That's the same as CRANE's 10.3". How much difference in "function" does another 1" or so of barrel make? I mean, if you had to equate a 0.065" ported 11.5 to a 10.3", what is that equivalent to?

For example "0.065" in an 11.5" is like 0.070 in a 10.3" due to less dwell." or something

[markm]

I mean, if you had to equate a 0.065" ported 11.5 to a 10.3", what is that equivalent to?

For example "0.065" in an 11.5" is like 0.070 in a 10.3" due to less dwell." or something

In my experience, .065 in 11.5 would be like .067-.068 in a 10.3". Both gassed on the lean side of unsuppressed functionality.

[WS6]

In my experience, .065 in 11.5 would be like .067-.068 in a 10.3". Both gassed on the lean side of unsuppressed functionality.

So on a 12.5, it would be like a 0.062-0.063?

[markm]

So on a 12.5, it would be like a 0.062-0.063?

I've never messed with a 12.5". But I'd estimate .063-.064" would be close. Between 10.3 and 11.5, I haven't notices a real difference in porting function. (i.e. a .068" runs very similar in both) But stretching that dwell out to a 12.5" might start making more of a difference.

[scooter22]

So on a 12.5, it would be like a 0.062-0.063?

I believe Centurion’s 12.5 is 0.0625


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[Clint]

Grant measured the 11.5" FBI barrel at .069"

This is equivalent gas drive to the CRANE 10.3" at .071"


The timing ratios are different, of course.

As I recall the FBI barrel was around .070/.071 ish range. I think someone posted it elsewhere here.

That's the same as CRANE's 10.3". How much difference in "function" does another 1" or so of barrel make? I mean, if you had to equate a 0.065" ported 11.5 to a 10.3", what is that equivalent to?

For example "0.065" in an 11.5" is like 0.070 in a 10.3" due to less dwell." or something

[Furbyballer]

I believe Centurion’s 12.5 is 0.0625


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Yea, so is hodges 12.5 gas port.

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