AR 17 Rem Sunday Data Dump

[Jkoch]

So I finally got to do some more shooting with my newly made AR 17 Remington
With a Shilen 26” Drop in barrel.

Using 223 range brass.
yes it’s a tiny bit short but seems to be doing just fine. I do see extreme spreads that are a little bit high yet I’m using very mixed range brass right now nothing is sorted nothing is really checked for head stamp or if it is 223,or 5.56!
it’s formed, annealed, sized and neck turned, load and shoot.

I realized once you start getting further out that’s where the different variants in speeds caused by the great variance in brass I’m shooting (some are 5.56,223 and all different head stamps) rears its ugly head.
But all things considered pretty amazing it shoots what it does with what I’m using right now.

The 25 Grain pills are going faster than my 20 grain so either I’ll lower one or raise the other with the powder I’m finding this is a very forgiving Caliber. My Extreme spread was large but yet my groups were small.

Again this brass was very beatup. when I took a sample of about 20 almost every single one of them were of a different headstamp!

So far this beats out my A.R. 15 with a rainier 20 inch barrel. I will have to do more comparisons with both having all same brass.
If I burn out this barrel, I will probably do a 17-223 to replace it but that’s too far to really think about right now.

I really like the barrel it doesn’t seem foul and so far it doesn’t seem like it has any accuracy degradation, after sustain fire.

I don’t have anything bad to say right now about it

 

[Jkoch]

100 yards
Best groups measured.
1 flier

 

[Jkoch]

some of them I measured
there’s one flyer on one of the better groups that I think was from a previous range day because the hole looked weathered.

 

[Coyotefurharvester]

I back off the Hodgdon loads slightly for my Shilen barreled 17 rem when using 556 brass. Great velocities from the cfe, I should probably try it.

 

[Jkoch]

not sure what happened on this one would’ve been probably the best group of the day.
The target was blowing back-and-forth and I’m not sure if this is truly a keyhole or if it was caused by like an odd angle of the target being blown around but it looked like it was going dead center even though it’s perfect shape of the bullet kind of funny but hopefully not concerning.

One of my cases went in funny and caused the bullet to be really off-center and I put bent it back straight and chambered it and shot it ...
it looks like a 25 grain because of the length/shape
1/10 twist approx. shilen does not do a 1/9 in 17’s caliber

 

[Coyotefurharvester]

Mine is 1/10, doesn't care for any of the 30's. Marginal with the 25 gr vmax.

 

[JSH]

Surprised of how well it does with what your feeding it.

FYI, Shilen does make a 1-9” 17 barrel, I have two of them.

 

[Jkoch]

Surprised of how well it does with what your feeding it.

FYI, Shilen does make a 1-9” 17 barrel, I have two of

Surprised of how well it does with what your feeding it.

FYI, Shilen does make a 1-9” 17 barrel, I have two of them.

Ahh, must be on the “made to order” section?
The 1:9 is it a Ar15 barrel? Or bolt action?

 

[Jkoch]

Mine is 1/10, doesn't care for any of the 30's. Marginal with the 25 gr vmax.

Not shot past 100yrds. With this.
When you say marginal, are you talking about accuracy or longer shot instability?

 

[JSH]

Shilen 1-9” twist is a bolt gun. Right there on their barrel list, dunno why they wouldn’t make an AR.

 

[Coyotefurharvester]

Both accuracy and longer shot(300 yards) instability. I would see at 100 yards occasionally a hole that looked more 20 cal size. Worse in the winter, below freezing temps. I stick to 25 gr hp. Lucky I have some Woodchuck den and Berger match target 25's.