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Thread: Has anyone done any long range testing on 300 AAC?

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    Has anyone done any long range testing on 300 AAC?

    Of all the stuff I have read on 300 AAC, I have never seen a thread on hit probability at 600 yards and beyond so was wondering how they would do on say a Rattle Battle Course of Fire?

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    Quote Originally Posted by Humpy70 View Post
    ..... on say a Rattle Battle Course of Fire?
    Can you extrapolate on this? Sounds like my kinda fun.

    at 600 yards that round will be dropping like a brick. It's a ~120gr projectile that only starts life at 2,100 FPS.

    For reference the 7.62x39 is a very similar round. I dont consider it anything more than minute of hillside at that distance.
    Tactical Nylon Micro Brewery

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    Rattle Battle is a course of fire conducted in the military phases of National Championships. This will tell you all about how it is conducted.

    https://www.bing.com/search?q=Rattle...6F860EAD2758C4

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    300 Blk would be a poor choice IMO, I’ve shot steel to 350+- but a 110/120 gr has a severely shitty BC/SD.
    I recall seeing a Travis Haley vid years back where he was lobbing 300 Blk rds at distance, 600 yds or so. In the video he was making consistent hits. :-)
    I assumed a lot of rds were fired with a lot of editing.
    A true "Gun Guy" (or gal) should have familiarity and a modicum of proficiency with most all firearms platforms.

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    Agreed but if you have a Sierra Infinity Five program run a 175 gr. Sierra Match King at 1700 FPS and set your zero at 300 yrds and you will find that holding center mass on a silhouette target you will get 100% hits up to 350 yards. That should be about identical to a 173 gr. mil spec match bullet and it should have around 1275 impact velocity at 350 yards.

    You could do a Rattle Battle Match variation at 300, 200 and 100 yards for fun.

    As you say at 600 it is going to be coming in running down hill for sure.

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    Just speaking for me; I have no trouble making hits to 300 using the light (110 gr. Barnes) Supers.
    At extended range (certainly 600) my problem is- a ranging error of 20 yds+- results in being short, or long. An experienced Spotter would be mandatory in my case.
    It would be a fun exercise however.
    A true "Gun Guy" (or gal) should have familiarity and a modicum of proficiency with most all firearms platforms.

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    Pull up the Sierra website and do a search for 300 AAC Blackout load data.

    Scroll down to the 175 to 180 grain bullet data and take a look at energy in ft lbs. The 175 Sierra indicates 1155 ft lbs launched at 1700 fps which would be quite effective. The 173 Military Match bullet should be very close to the 175 in flight characteristics.

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    Will do.

    Using the Ballistic AE program and plugging in a 175 gr TMK @ 1700 FPS looks like you go subsonic just past 540 yds and lose only 91 FPS to 700 yds.
    So, like a freight train- once you get it moving, it doesn't want to slow down very quickly. A BC of .495 (per Sierra, below 1800 FPS) is a good thing.
    Last edited by gaijin; 01-19-22 at 07:59. Reason: Typo's
    A true "Gun Guy" (or gal) should have familiarity and a modicum of proficiency with most all firearms platforms.

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    Sierra came out with 175 MKs as their 168s shot from 308 will start to tumble past 900 yards when they went subsonic and the 173s would remain stable all the way into the ground at maximum flight range. The 175 was loaded into M118 ammo for sniper ammo starting back in 80s and the project manager at Picatinny was Jim Hettle a long time friend. He was a ammo engineer at Picatinny Arsenal when I was there. Below is where you can buy it.

    Go to Midway and do a search for M118 Long Range ammo 175 grain.

    Sierra made the 168s primarily for 300 meter shooting but still did well at 600 yards.

    HOT DAMN was looking at Sierra Data and a 150 gr FMJ BT will fly at 1700 fps with only 11.3 gr. of N105 and I just happen to have about 3 pounds of it and I think I have about 500 150 FMJBT Bullets but not Sierra. Think I got them from Midway many years ago.
    Last edited by Humpy70; 01-19-22 at 08:55.

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    Quote Originally Posted by gaijin View Post
    300 Blk would be a poor choice IMO, I’ve shot steel to 350+- but a 110/120 gr has a severely shitty BC/SD.
    I recall seeing a Travis Haley vid years back where he was lobbing 300 Blk rds at distance, 600 yds or so. In the video he was making consistent hits. :-)
    I assumed a lot of rds were fired with a lot of editing.
    Totally agree. I remember that stupid Haley crap. We've tried shooting a 10.5 5.56 to 1000 yards with irons. But it got the the point where after 5-10 misses, a hit would just be dumb luck. Shooting 300 at that range would be more of a fun gimmick, which we do all the time... so I'm all for stretching beyond a round's realistic ability.

    For predictable hits beyond 300 yards, hell no for 300 worthless.

    We don't shoot regularly with anyone who has 300, but the range we have now is much better. We could give it another try. But the one time we had a 300 out with us, the round was anything but impressive.
    Last edited by markm; 01-19-22 at 09:16.
    "What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v

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