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Sierra Load Data for .223 question

TopkickTopkick Member Posts: 4,452 ✭✭
I am looking for data specifically for the 69 gr HPBT Match bullet.

I have IMR 4895, but will look for another powder if need to.

I am trying to load a 500 yard round for a match.
I'm shooting a Ruger MK II Target Grey w/ 26" heavy barrel.
I have a 6x24x50 on top.

Some direction requested as to data specific to the Sierra bullet.

I have the Lyman #48 manuel, but it's not specific to the bullets I have.

Thanks!

Comments

  • AmbroseAmbrose Member Posts: 3,002 ✭✭✭
    edited November -1
    I'm thinking you'll need a tight twist for that bullet--probably 1 in 9". I don't believe the standard Ruger MK II is that quick. But I might be wrong. 60 gr. Hornady v-max will just stabalize in my 1-12" Sako.

    EDIT: As my Dad said when he was 94 years old: "Sometimes I'm wrong!"
  • nononsensenononsense Member Posts: 10,934 ✭✭✭✭
    edited November -1
    Topkick,

    "I'm shooting a Ruger MK II Target Grey w/ 26" heavy barrel."

    According to Ruger's website, you have the correct twist rate for this bullet:

    Caliber: .223 Rem.
    Capacity: 5 Rounds
    Finish: Target Greyr
    Stock: Brown Laminate
    Barrel Length: 26"
    Groove: 6
    Twist: 1:9" RH
    Overall Length: 46"
    Weight: 9 3/4 lbs
    California Approved: N/A
    Massachusetts Approved: N/A
    Front Sight(s): None
    Rear Sight(s): None
    Other Features: Three-Position Manual Safety
    Suggested Retail Price: $ 935.00
    Miscellaneous: N/A

    From Hodgdon's website:

    69 GR. SIE HPBT Hodgdon Varget .224" 2.235" 24.0 2784 39,200 CUP 26.0C 3010 50,200 CUP
    69 GR. SIE HPBT IMR IMR 4320 .224" 2.235" 23.0 2673 43,500 PSI 24.8 2873 53,100 PSI
    69 GR. SIE HPBT IMR IMR 4064 .224" 2.235" 22.5 2690 42,200 PSI 24.0C 2872 50,900 PSI
    69 GR. SIE HPBT Winchester 748 .224" 2.235" 24.5 2870 51,500 CUP
    69 GR. SIE HPBT Hodgdon BL-C(2) .224" 2.235" 24.5 2833 40,600 CUP 26.5 3029 50,100 CUP
    69 GR. SIE HPBT IMR IMR 4895 .224" 2.235" 23.3 2783 44,600 PSI 24.8C 2953 53,600 PSI
    69 GR. SIE HPBT Hodgdon H335 .224" 2.235" 22.0 2801 42,400 CUP 24.0 2960 49,500 CUP
    69 GR. SIE HPBT Hodgdon H4895 .224" 2.235" 24.0 2870 41,100 CUP 26.0C 3069 49,700 CUP
    69 GR. SIE HPBT IMR IMR 3031 .224" 2.235" 21.0 2707 42,900 PSI 22.5 2906 52,800 PSI
    69 GR. SIE HPBT Hodgdon Benchmark .224" 2.235" 21.5 2770 39,700 CUP 23.5 2970 49,700 CUP
    69 GR. SIE HPBT Hodgdon H322 .224" 2.235" 21.0 2746 40,500 CUP 23.0 2932 49,400 CUP
    69 GR. SIE HPBT IMR IMR 4198 .224" 2.235" 18.3 2706 46,300 PSI 19.5 2818 52,300 PSI

    Your IMR-4895 will work O.K. but personally I prefer AA-XMR-2015 or V V N-140 for better results. You need to find an accuracy node at the very upper end of the scale since failing to do so will result in the bullet falling into the transonic range at 500 yards. Accuracy will suffer at the longer ranges.

    This is my data based on my 2015 load with a 300 yd. zero:

    Range = 500
    Velocity = 1680
    Energy = 432
    Drop = -34.4
    Drift (in.) = 30.8
    Drift (MOA)5.89
    Total Drop = 71.5
    Clicks = +27.6
    MOA = +6.59

    Pray for calm weather since these little bullets at this low velocity get pushed pretty far left and right.

    Best.
  • 243winxb243winxb Member Posts: 264 ✭✭
    edited November -1
    Load data for Sierra bullets is here, both bolt & auto data. Click the Sieraa logo. http://www.6mmbr.com/223Rem.html Go to Sierra website, some of the heaver bullets have the barrel twist listed. Click on the bullet number to see this.
    [url] https://saami.org [/url]
  • TopkickTopkick Member Posts: 4,452 ✭✭
    edited November -1
    Thank you for all the replies!
    I will C&P all of them and will check it out.
    I know 500 yards is pushing it , but I have done a lot of shooting at 650, just dialing up high!

    The mildot scope I have is irreplacable in this scenario.

    Thanks again!
  • dcs shootersdcs shooters Member Posts: 10,969
    edited November -1
    Sierra's accuracy load for the 69gr is 25.5gr. of Reloader 15, Winchester 205M primer, 2.26 OAL.
    this is what I'm using in my custom Rem.700 with 1-8 twist bbl.
    It does 1/4in. at 100yds.
  • TopkickTopkick Member Posts: 4,452 ✭✭
    edited November -1
    Thank you DCS!
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