Range Report  Testing the 7mm 190’s.

Steel head

Feral kitten
Minuteman
  • Aug 3, 2014
    14,267
    38,231
    Washington
    Does anyone know what speed to stay away from with the 180 ELD-M’s so they don’t blow up?

    I’ll soon be loading for one once my barrel comes in. 9 twist 26” straight, I only have h4350. From what I’ve read in the Aussie forums, people have been loading around 56g of AR2209/H4350 with them still being fine.
    With a 1-8 I downloaded them to 2800 and still had a few pop.
     
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    Steel head

    Feral kitten
    Minuteman
  • Aug 3, 2014
    14,267
    38,231
    Washington
    Damn!
    These 183 SMK’s are longer than my 190LRHT!
    They are in the lands at 3.122 vs 3.099 for the 190’s.
    Be inside to see what the BC works out as.
     

    Schw15

    Longrange
    Minuteman
  • Jul 21, 2019
    2,241
    340
    Colorado
    Damn!
    These 183 SMK’s are longer than my 190LRHT!
    They are in the lands at 3.122 vs 3.099 for the 190’s.
    Be inside to see what the BC works out as.
    When I measured mine in my 7mm saum the 183 was 3.115 But thank you for the info I needed to know the difference So if I do my special throat it wasn't too long for the either of them. They claiming .377 for agverage
     

    Steel head

    Feral kitten
    Minuteman
  • Aug 3, 2014
    14,267
    38,231
    Washington
    When I measured mine in my 7mm saum the 183 was 3.115 But thank you for the info I needed to know the difference So if I do my special throat it wasn't too long for the either of them. They claiming .377 for agverage
    My barrel has a fair among shots in it now.
    the throat has definitely moved forward.

    We’ll see if they are as consistent as the Berger.
     
    Last edited:

    Samegawa

    Private
    Minuteman
    Oct 29, 2012
    20
    2
    46
    Sweden
    Finally! New barrel in house.
    76 cm of unicorn steel (at least for us in Norway.) It`s a Bartlein 1-7.7" twist 5R.
    Chambered in 7 mm Blaser Magnum. So far I have only tested 190 gr A-tip with N570 and Fed 215.

    Results:
    69,0gr avg 911 m/s = 2989 fps
    69,5gr avg 925 m/s = 3034 fps
    70,0gr avg 934 m/s = 3064 fps
    70,5gr avg 946 m/s = 3103 fps
    71,0gr avg 951 m/s = 3120 fps

    And the good news is that all bullets made it to the target!!!

    I don`t intend to shoot the loads this hot, but rather provoke the Hornadys to breaking point. And so far they hold up well and groupings are around 1/2 moa. SD /ES are a bit high, so I`ll try another powder to see if there is improvement. N570 is great for getting speed up in a long barrel, but it is really dirty.
     

    Axel314

    Full Member
    Minuteman
    Feb 18, 2017
    478
    70
    Indiana
    Here's my testing from Saturday.

    I think the 190LRHT, 190ATIP, and 183SMK are all very excellent bullets and viable choices. From a statistical perspective, their performance is pretty much identical at the distance I test (1284 yards on paper). My performance measurement is vertical standard deviation.

    View attachment 7303492View attachment 7303493

    I will likely go with the 190LRHT as it looks like a safe bet. I had good results before with the 184F-open Hybrids, but now with the 190s there is no need to point them myself. The A-TIP is a clear leader in BC, but its interesting to note that the 183 SMK is not very far behind on drops when put in front of the same powder charge. Also, on the LRHT I sorted by length and SMK was sorted by weight and length. I did not sort the ATIPs, so I may be leaving a bit on the table with them - but for their cost and marketing - I shouldn't have to sort them.

    My velocity numbers are derived from BC. I found myself playing around too much with the labradar and magnetospeed to get inconsistent results - so I test on paper as the bullet tells the truth.

    I had one questionable shot that went into either of the 183SMK groups, the rest of the numbers I'm fairly confident in - although I'll need to re-check my zero with each of these bullets next time I go out to confirm drops.

    TargetPowderChargeShotsBulletDialedVertical OffsetActual Drop MOAVertical SDGroup Size InchesGroup Size MOAMean RadiusDAG7 BCEst. VelocityNotes
    2​
    H4831SC
    61.5​
    10​
    190 LRHT
    33​
    -0.723​
    33.723​
    0.257​
    13.5​
    1.006​
    0.309​
    3200​
    0.384​
    2897​
    3​
    H1000
    64.5​
    10​
    190 LRHT
    30.5​
    -1.338​
    31.838​
    0.238​
    12.633​
    0.94​
    0.27​
    4000​
    0.384​
    2954​
    4​
    H1000
    64.5​
    9​
    190 ATIP
    29​
    -0.364​
    29.364​
    0.382​
    16.23​
    1.207​
    0.405​
    4200​
    0.422​
    2993​
    5​
    RE23
    60.8​
    9​
    190 ATIP
    28​
    -1.253​
    29.253​
    0.26​
    11.825​
    0.88​
    0.317​
    3800​
    0.422​
    2998​
    6​
    RE23
    60.8​
    9​
    183 SMK
    29​
    -0.773​
    29.773​
    0.246​
    11.834​
    0.88​
    0.273​
    4000​
    0.377​
    3046​
    questionable shot
    7​
    RE23
    60.8​
    9​
    190 LRHT
    30​
    -0.643​
    30.643​
    0.28​
    13.778​
    1.025​
    0.261​
    4000​
    0.384​
    3003​
    8​
    H1000
    64.5​
    10​
    183 SMK
    30.5​
    0.034​
    30.466​
    0.276​
    18.632​
    1.386​
    0.432​
    3800​
    0.377​
    3017​
    questionable shot

    AveragesVertical SDGroup Size InchesGroup Size MOAMean Radius
    190 ATIP
    0.32​
    14.03​
    1.04​
    0.36​
    190 LRHT
    0.26​
    13.30​
    0.99​
    0.28​
    183 SMK
    0.26​
    15.23​
    1.13​
    0.35​

    *Load data here is over max book loads for 7 SAUM, I use TBN coating and have a custom throat to allow an OAL up to 3.2 - do not attempt to use these loads, I don't take any responsibility for your reloading practices - and would you really trust a guy that shoots MOA?*
    Have any pressure at 64.5 grains h1000. U must have a long throat. I ran 64.5 yesterday with 190 lrht and was compressed. And i have a long throat