.223AI



  • Got some forming happening. Shooting pretty good too. :)

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  • that the one you were waiting on during the class?



  • Nope. This is the other barrel for my 300BLK setup. I've had it for a while.



  • What bullet and powder are you using?

    Just curious, could you run the 223AI through an AR, or does the steep shoulder mess with feeding?



  • 80gr berger. Yes you can set AR's up for AI.



  • @orkan Sweet looking rifle,Did Travis put it together for you? I love the 223AI and the 75 gr amax slugs are about as good as it gets.What powder and slugs are you using.I have been using RL15 and H335 with very good results in the 223AI.



  • Was that group shot with case forming loads?

    You cannot by reason change the ill opinion of a man, which by reason was not obtained.

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  • @ericbc7 Yes.



  • @steelbanger said:

    @orkan Sweet looking rifle,Did Travis put it together for you? I love the 223AI and the 75 gr amax slugs are about as good as it gets.What powder and slugs are you using.I have been using RL15 and H335 with very good results in the 223AI.

    Yes, Travis built it. I'm using varget and 80gr bergers. I've tried hornady bullets a lot. They just don't seem to ever shoot as well as something else. Always more fliers.



  • I hate forming brass. It seems like it just won't let you get a good group!!!! 5 shots each at 100yds... and there's always got to be one or two that misbehave. :expressionless:

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  • Got 100pcs formed and worked up a load today with the once fired newly formed set. Goodbye flyers, hello little knots. I shot the 5 on the left, then added a click and killed a couple dots. Well, I winged them good anyway. Gonna need to come a click right yet... but there's plenty of time for that. ;)

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  • Proofed the load a bit and it's shooting real good.

    Lapua brass
    CCI-450 primer
    80gr Berger target
    25.5gr Varget
    1.900 BTO (.010 off lands)
    2.400 OAL
    2750fps (16" 8-twist Benchmark 5R)



  • Now to come up with a friendly .223AI battle...



  • @brittel No fair, you've got 4 more inches of barrel. ;)



  • Yours isn't losing much, I "only" have 89 fps on you with my 75gr Berger. :smirk:

    1000 yards, 10mph 9 o clock
    80gr VLD @ 2750
    9.8/2.8

    75gr VLD @ 2839
    9.4/2.9

    Though something tells me I could be using a 7LRM and wind flags and still not be able to call the wind like you do :smiley:



  • @orkan I've got 3 more inches yet!



  • @tscustoms cheaters abound!



  • I should probably sling some 90's too!



  • It's like you want somebody to make a joke!

    A bunch of dudes talking about how theirs is longer....

    Really?!?!

    RLTW
    (This space for rent)

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  • Oh look, I found a shirt for @ragnarnar

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  • It's just that everyone knows contour is more important.

    Just saying....

    RLTW
    (This space for rent)

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  • Although my .223 is vanilla cased, the barrel is 24" and #9 HV thick LOL.

    99% of the Lawyers make the rest look bad.

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  • Grabbed a dedicated .22cal Ultra-7 for this barrel. Got another 100 rounds loaded up so I can get this barrel past the 200rnd point and confirm the load is going to hold.

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  • @orkan Outstanding group orkan.Please let me know when you take that 16" barrel out to 500 yds or more.I got Travis building me a 16" 223ai and I am wondering how the short barrel will do at 500 or better.I take my 20: barrel 223ai to 400 yds and smake the shit out of golf balls with it. Is that a TT 315P on that rifle?



  • @steelbanger said:

    Is that a TT 315P on that rifle?

    Yes, that's a TT315P GenIIXR.

    Should do plenty good at range... especially after it's broken in a bit and speeds up.

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  • @orkan
    Greg what was the muzzle velocity for this^^^^^?
    My come ups mirror this to at least 600 yards; I have not shot the .223 further.
    I am using 24.0 RL15 and CCI #41 primers in LC16 cases with 80 SMK or Nosler CC.

    99% of the Lawyers make the rest look bad.

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  • @mamalukino said:

    Greg what was the muzzle velocity for this^^^^^?

    2750fps.



  • Decided to get off the bench and go lay down today and finish working this setup out.

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    Fired these 5 @100yds first. Forgot to come a click right from the last session.
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    Tacked that click on and then fired 10 shots @ 100yds. Of course I just HAD to let that one get out the bottom on me. :rage:
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    Then I moved to 300yds to confirm, and just HAD to let one get out the top. In my defense, I wasn't very sheltered in this position and there was a 12-22mph gusty wind getting a hold of me... so I'll take it I guess. My 5 shots are by my finger there. I was too lazy to go paint before I started shooting.
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    I declare this .223AI project a success. :)



  • Is that the KMW stock?



  • @hypo Yup, Sentinel in mcmillan camo. Got it from OTM. Good folks there. :)

    I enjoy the stock. Extremely friendly ergo's.

    Not to mention it looks about as snipery as a traditional rifle gets. ;)



  • SvVx5ddh.jpg

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    5 shots at 593yds. It was windy today, but I only dropped one.
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    Fired 8 shots at 1111yds. Once I found the plate with one, I was able to land them out there.
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    Nothing supernatural on my part... but the rifle shoots well and my firing solutions were spot on.



  • Very Nice!

    99% of the Lawyers make the rest look bad.

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  • Is the magazine an MDT?

    99% of the Lawyers make the rest look bad.

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  • @mamalukino said:

    Is the magazine an MDT?

    Yes.



  • I am now in the "rinse & repeat" phase of the .223AI project. Otherwise known as the make ammo expend ammo and smile portion of my work with a rifle. :)

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    Nice shiny new rice in the tumbler. :)



  • Cleaned the rifle. Loaded up 20 to foul back in.

    First two groups. Shot top, then bottom.
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    Second two groups. Shot right, then left. Storms rolling all over the place and nasty wind pounding on me so yeah, whatever. It's doing fine. ;)
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    Loaded up the rest of the brass after confirming with the first 20. Ready to roll! I'm interested to see how long these 100 pieces of brass last me.
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  • @orkan I am impressed, that is some fine shooting.And all that with a 16" barrel.You gotta love the 223 AI.



  • Shot the first 10 then went inside, had a sandwich, came back out and shot the last 10. Clearly rushed it after pounding down some food. That far low left dot... yeah, that sure as hell wasn't me. Shot broke clean perfectly intersecting that dot and my crosshair didn't leave it by more than a tenth high. Not sure what went on there. I haven't had a piece of brass misbehave by that much... so it could have been an oddball bullet. That sure is rare... but it happens.
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  • @orkan said:

    SvVx5ddh.jpg

    gdztX9Hh.jpg

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    5 shots at 593yds. It was windy today, but I only dropped one.
    J6J6pIhh.jpg

    Fired 8 shots at 1111yds. Once I found the plate with one, I was able to land them out there.
    ocppMmNh.jpg

    Nothing supernatural on my part... but the rifle shoots well and my firing solutions were spot on.

    I must have skimmed over this post last night... and people say you BRAG!?!

    Allow me to do that for you. First target at 593, were @orkan 's first 5 shots of the day. I watched him set up, range, compute firing solution and dope his rifle and off he went.

    1111 yards he was on in 3 shots and I was calling his impacts after he was done shooting. I was worried I was going to confuse him since he was launchin 80s out there faster than they would make the trip. Once his first round hit the plate he had 2 rounds in the air until his 8th shot. The wind was left to right then right to left at 7-13mph. Might not be supernatural on his part, but I sure was in awe.



  • @brittel said:

    ... and people say you BRAG!?!

    Allow me to do that for you.

    ... well no one believes me when I tell it how it is. Maybe they'll believe you? ;)



  • Trending a tenth or a bit more high right off the start and stayed there the entire target. I held center dot on the first 3 shots, then adjusted poa for the remaining dots. We'll see whether this is just this barrel's new zero now that it's not a teenager anymore, or whether it was me or not on tomorrow's target. Cold bore has been trending a bit high too. Maybe a tenth, maybe a bit less, but that will require more paper to confirm.

    Bottom row, that miss high left... no idea where that came from. I was holding a full tenth + low just as all the previous dots. There are also some unexplained flyers still hanging around like that which will need working out.

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  • @orkan
    Looking good overall!

    Do you think the few fliers are brass or bullets?



  • @dddoo7 said:

    Do you think the few fliers are brass or bullets?

    I should know within the next firing.



  • Well I confirmed the barrel's new zero. Fired the first shot, hit high, fired the 2nd shot holding low and smashed it, fired the 3rd shot holding center and hit high. So I came down a click and ran the rest. Pretty good... but the horizontal fliers are still present. This will take some doing.

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  • So is the barrel is still stress relieving itself as you heat cycle it?
    Can the bedding move too?

    I am intrigued.
    Most shooters never reach the skill level to notice such inconsistencies.
    The quality of the machine work and assembly is not a worry.
    The care put into the ammunition removes almost all of the variables there.

    The entire shooter/rifle/optic/ammunition system has proven 1/4 MOA Ability.

    Putting the barreled action into a CMM Coordinate Measurement Machine would be cool if you had data from the first day it was assembled and after each trip to the range.

    Maybe a V Block fixture like a giant cartridge run out gauge.



  • I've heard that some barrels can have some runout as a result of the drill walking before the rifling machine does its thing.
    If the eccentricity is to the left could that account for the round getting thrown that way?

    It's probably not really as much of an issue on a premium barrel. Would that be something Travis would check when installing the barrel?

    I'm intrigued as well, and curious as to what the steps are to diagnose the actual issue and fix this type of thing.

    RLTW
    (This space for rent)

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  • Seeing you guys shooting that 1100 yards with the 223AI gave me the inspiration to try 900 yards yesterday with my 223.
    I have to say I was quite thrilled as I had never shot a 223 that far.:smile:

    99% of the Lawyers make the rest look bad.

    5


  • Well, looks like we got the problem figured out. It seems to have been an ignition timing issue. I experienced some cock-on-close with this rifle since it's inception. It was about the only thing I could point the finger at as to why this was happening... and I realized it could have been hidden behind the extra recoil of the 300BLK. This .223AI however couldn't hide anything from me. I knew for certain which flyers were caused by me and which weren't. Travis could have fixed it for me at the time he built the rifle, but I was rushing him on the build so I told him to just leave it as it was back then. My mistake. Got the rifle to Travis tonight and he grabbed some measurements and got the cocking piece straightened out.

    Here's the target. Mind you, the first shot, cold, was after the optic had been removed and re-installed. That's happy. First two shots drilled, I then intentionally muscled the rifle for the next three. I moved to row 2 and set up honest shots on the first two again, and then intentionally muscled the next 3. Row 3 was all honest shots... just to make sure the top two weren't flukes. I milked the bag a bit on shot 2, but otherwise all right in there. Row 4 was two honest shots, an intentional muscle, then two honest shots. Note the direction and consistency of POI shift.

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    This action has been a real turd since day one. Must have been built on a friday. So happy to be running Lone Peak's from here on out. Though I'm happy that I finally addressed it. I just didn't realize something so subtle could have such a drastic impact on performance. Well... drastic for me anyway. Most people would be damn happy with how it was shooting before.

    This rifle is sub-1/4moa capable. No question about it. Next target, I aim to clean it.

    Those of you with further questions, please try to make them pointed and specific. This is VERY advanced subject matter and isn't for those with only a rudimentary understanding of lock time, harmonics, and NPA. As I've always said, shooting 1/2moa isn't very difficult. Shooting 1/4moa or better off a bipod and rear bag is hard... and this is just another thing to stack onto the hundreds of other things to consider when playing at that level.

    Someone snagged a pic while I was shooting this target.
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  • I'm glad you explained what you were doing when we went down to grab your target. I kept wondering why you had a great looking npa and then on some shots you were rolling your hips a bit.



  • @brittel I was doing science. :)



  • @orkan

    Is this one of the Surgeon from Brownell. If so the one I got about three years ago was a turd and had to go back before my smith would even touch it.


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