Rifle Chrono data

Discussion in 'Rifle Cartridge Data' started by Branth, Mar 12, 2016.

  1. Branth

    Branth Member

    6,275
    4
    I have amassed a sizeable base of chronograph data over the year or so I have had my chrono. Sometimes it's useful to have a guesstimate of how much velocity a load will give out of real world firearms instead of overly long ballistic test barrels, so here's some of my data. All data is an average of 10 shots unless otherwise noted.

    Obviously not all of these loads are safe in every firearm. I included data from all of my tests, even those loads I stopped using due to pressure signs. As always, work up your own loads in your own rifle and watch for pressure signs.

    If you have data you would like to contribute, shoot me a PM or post in this thread and I'll add it!

    Pistol chrono data is located here:
    http://www.hipointfirearmsforums.com/forum/f331/pistol-chrono-data-318146/#post2317348

    Loads marked with a "*" have been tested in a pistol in the pistol chrono data thread.


    AR-10, 16" chrome-lined barrel

    150gr Hdy SST, 43.0gr H4895, temp 42* -------------------------- 2735 fps
    150gr Hdy SST, 43.0gr H4895, temp 40* -------------------------- 2756 fps
    150gr Hdy SST, 42.5gr H4895, temp 45* -------------------------- 2670 fps
    150gr Hdy SST, 42.2gr H4895, temp 40* -------------------------- 2668 fps
    150gr Hdy SST, 42.1gr H4895, temp 60* -------------------------- 2681 fps
    150gr Hdy SST, 42.0gr H4895, temp 60* -------------------------- 2640 fps

    150gr Hdy FMJ, 41.0gr H4895, temo 45* -------------------------- 2530 fps

    168gr Hdy Match, 42.0gr H4895, temp 60* ------------------------ 2585 fps

    155gr Nosler Custom Comp, 41.2gr H4895, temp 60* ------------ 2533 fps
    155gr Nos CC, 39.0gr Re15, temp 86* ----------------------------- 2287 fps (avg of 4)
    155gr Nos CC, 39.5gr Re15, temp 86* ----------------------------- 2319 fps (avg of 5)
    155gr Nos CC, 40.0gr Re15, temp 86* ----------------------------- 2340 fps (avg of 5)
    155gr Nos CC, 40.5gr Re15, temp 86* ----------------------------- 2390 fps (avg of 5)
    155gr Nos CC, 42.5gr RE15, temp 60* ----------------------------- 2457 fps (avg of 5)
    155gr Nos CC, 43.0gr RE15, temp 60* ----------------------------- 2493 fps (avg of 3)
    155gr Nos CC, 43.5gr RE15, temp 60* ----------------------------- 2470 fps (1 shot)
    155gr Nos CC, 44.0gr RE15, temp 60* ----------------------------- 2532 fps (avg of 3)
    155gr Nos CC, 44.0gr RE15, temp 85* ----------------------------- 2571 fps
    155gr Nos CC, 44.0gr RE15, temp 75* ----------------------------- 2565 fps
    155gr Nos CC, 44.0gr RE15, temp 86* ----------------------------- 2586 fps
    155gr Nos CC, 41.2gr H4895, temp 90* ---------------------------- 2538 (avg of 8)
    155gr Nos CC, 41.2gr H4895, temp 78* ---------------------------- 2545 (avg of 9)
    155gr Nos CC, 41.8gr H4895, temp 78* ---------------------------- 2559 fps
    155gr Nos CC, 43.0gr H335, temp 40* ----------------------------- 2573 fps
    155gr Nos CC, 43.5gr H335, temp 39* ----------------------------- 2625 fps

    150gr Nos Ballistic Tip, 44.0gr Re15, temp 75* --------------------2624 fps
    150gr Nos BT, 44.0gr Re15, temp 78* ------------------------------2637 fps (avg of 5)
    150gr Nos BT, 44.0gr Re15, temp 80* ----------------------------- 2663 fps (avg of 5)
    150gr Nos BT, 44.0gr Re15, temp 90* ------------------------------2667 fps (avg of 14)
    150gr Nos BT, 44.0gr Re15, temp 40* ------------------------------2575 fps
    150gr Nos BT, 44.0gr Re15, temp 39* ------------------------------2563 fps
    150gr Nos BT, 41.4gr H4895, temp 90* ---------------------------- 2621 fps (avg of 7)
    150gr Nos BT, 42.5gr H335, temp 55* ------------------------------2596 fps (avg of 5)
    150gr Nos BT, 43.0gr H335, temp 55* ------------------------------2602 fps (avg of 5)
    150gr Nos BT, 43.5gr H335, temp 39* ------------------------------2639 fps
    150gr Nos BT, 43.5gr H335, temp 40* ------------------------------2589 fps (avg of 5)
    150gr Nos BT, 43.5gr H335, temp 40* ------------------------------2650 fps (different shooting session than above)
    150gr Nos BT, 43.5gr H335, temp 55* ------------------------------2640 fps (avg of 5)
    150gr Nos BT, 43.7gr H335, temp 40* ------------------------------2587 fps (avg of 3)
    150gr Nos BT, 44.0gr H335, temp 55* ------------------------------2686 fps (avg of 5)

    150gr Nos AccuBond, 42.0gr H4895, temp 73* -------------------- 2593 fps
    150gr Nos AB, 42.0gr H4895, temp 78* ---------------------------- 2561 fps
    150gr Nos AB, 44.0gr Re15, temp 86* ----------------------------- 2640 fps

    ZQI 147gr ammo, temp 55* ---------------------------------------- 2649 fps
    ZQI 147gr ammo, temp 40* ---------------------------------------- 2594 fps



    Interesting case:
    These same 5 shots were measured with both the Magnetospeed Chronograph and my Master Chrony. They were fired through the 16" AR-10.
    155gr Nos CC, 41.2gr H4895. 86* temp
    Magnetospeed----Master Chrony
    ----2539----------------2531
    ----2566----------------2485
    ----2513----------------2479
    ----2516----------------2520
    ----2558----------------2497
    ------------average----------
    ----2538----------------2502


    16" AR-15
    55gr Hornady SP W/C, 25.2gr H335, 73* temp ------------------------------2903 fps (avg of 20)
    55gr Hdy SP W/C, 25.2gr H335, 70* temp, LC headstamp ----------------- 2902 fps (avg of 20)
    55gr Hdy SP W/C, 25.2gr H335, 70* temp, FC headstamp ----------------- 2935 fps (avg of 8)
    55gr Hdy SP W/C, 25.2gr H335, 70* temp, KFA headstamp ---------------- 2926 fps (avg of 7)
    55gr Hdy SP W/C, 25.2gr H335, 70* temp, Mixed headstamp -------------- 2862 fps
    55gr Hdy SP W/C, 25.2gr H335, 70* temp, trimmed and crimped LC------- 2902 fps

    65gr Sierra Gameking, 25.2gr H335, 20* temp ------------------------------2746 fps
    65gr SGK, 25.2gr H335, 63* temp --------------------------------------------2794 fps (avg of 8)
    65gr SGK, 25.2gr H335, 70* temp --------------------------------------------2887 fps (avg of 20)

    69gr Sierra MatchKing, 24.0gr H335, 63* temp ------------------------------2625 fps

    Winchester Surplus M195 (55gr), '82 year, q3115, 65* temp ---------------3060 fps


    20" 30-30 carbine
    160gr Hdy FTX, 29.0gr H4895, 65* temp -------------------------------------2090
    170gr Rem Core-Lokt factory ammo, 65* temp ------------------------------2152

    22" .308 bolt-action
    150gr Nos BT, 43.5gr H335, 60* temp ----------------------------------------2714 (avg of 5)

    150gr Hdy FMJ, 41.0gr H4895, 68* temp ------------------------------------- 2735 (avg of 5)

    150gr Win PP, 40.5gr Benchmark, 72* temp --------------------------------- 2682 (avg of 5)
    150gr Win PP, 40.5gr Benchmark, 63* temp --------------------------------- 2675 (avg of 4)

    168gr Hdy Match, 41.0gr H4895, 63* temp ----------------------------------- 2658
    168gr Hdy Match, 41.3gr H4895, 72* temp ----------------------------------- 2676 (avg of 9)
    168gr Hdy Match, 42.0gr H4895, 65* temp -----------------------------------2762 (avg of 6)
    168gr Hdy Match, 42.0gr H4895, 68* temp -----------------------------------2704


    20" .357 magnum carbine
    158gr Hdy XTP, 16.3gr H110, 50* temp ---------------------------------------1715 fps (avg of 5)
    158gr Hdy XTP, 16.7gr H110, 50* temp ---------------------------------------1770 fps (avg of 5)
    158gr Hdy XTP, 16.7gr H110, 60* temp ---------------------------------------1789 fps

    Last updated 3-13-16
     
    Last edited: Mar 13, 2016
  2. Visper

    Visper AK = Automatic Killer!?! Supporting Member

    A chrono would be something good to have, thanks for sharing the info. It is definitely great to know. Like you said, you get to see "real world" velocities of your loads, compared to calcs.
     

  3. Branth

    Branth Member

    6,275
    4
    Thanks. Before I had a chrono, I scoured all over the internet for chrono data from similar firearms with similar loads to try and guess what kind of velocity I was getting. The more data that is available out there, the easier that is. Also, it may save someone else time in working up a load.

    For example, I estimated the amount of RE-15 it would take me to get to 2650 fps with the 150gr Nos BT bullet, based on my decrease in velocity with respect to published loads with other powders, and the min/max loads and corresponding velocities published in the Nosler manual for Re-15. I undershot it by quite a bit, and with the 4 data points I got from my 4 test loads, I was able to calculate the powder/velocity slope and estimate a much more accurate powder charge. If someone else is working up a load in a 16" .308 with Re-15 and 150gr bullets, they can use that same data to estimate the powder charge for their estimated velocity.
     
  4. 60ratrod

    60ratrod STFU CARL! Member

    chronies are definitely a valuable tool for reloading. I have one, and duster and I have ran several rounds past it's sensors.