200gr SMK for .308

200gr SMK for .308

This is a discussion on 200gr SMK for .308 within the Reloading forums, part of the Sniping Related category; So i decided to try the new 200gr SMK part #2231, says it needs a 1-9 twist. So my rifle has a 1-10 twist 26" ...

Page 1 of 7 123 ... LastLast
Results 1 to 10 of 67
Like Tree8Likes

Thread: 200gr SMK for .308

  1. #1
    Senior Member Gunguy308's Avatar
    Join Date
    Sep 2015
    Location
    Phoenix Arizona
    Posts
    720

    200gr SMK for .308

    So i decided to try the new 200gr SMK part #2231, says it needs a 1-9 twist.
    So my rifle has a 1-10 twist 26" barrel
    Using Lake City brass trimmed to 2.006 and Varget I did a load test from 38.5-39.5gr
    They are very long, single feed only.
    Looking at the holes in the target they appear to be perfectly round and show no signs of key holes


    Sent from my VS995 using Tapatalk

  2. #2
    Junior Member
    Join Date
    Jan 2019
    Posts
    14
    I can't imagine what that would look like set to touch the lands on a Remington

    Sent from my SM-G930P using Tapatalk

  3. #3
    Senior Member straightshooter1's Avatar
    Join Date
    Jul 2017
    Location
    Arizona
    Posts
    506
    Quote Originally Posted by Gunguy308 View Post
    So i decided to try the new 200gr SMK part #2231, says it needs a 1-9 twist.
    Hmmmm??? So . . . it's a redesigned part# 2230 (200gr SMK)???

    Looks like it's more of an ELD design. What is the bullet's length?

    Quote Originally Posted by Gunguy308 View Post
    So my rifle has a 1-10 twist 26" barrel
    Using Lake City brass trimmed to 2.006 and Varget I did a load test from 38.5-39.5gr
    That seems like a pretty light load of Varget. . .??? Do you think it'll work for extreme distances?

    Quote Originally Posted by Gunguy308 View Post
    They are very long, single feed only.
    I'm curious. . . what was you're COAL?

    I've got a mag where I can get out to 2.940 or so.

    Mr RPR also has a really deep throat where I have to load them really long to get out to the lands.

  4. Remove Advertisements
    SniperForums.com
    Advertisements
     

  5. #4
    Senior Member Gunguy308's Avatar
    Join Date
    Sep 2015
    Location
    Phoenix Arizona
    Posts
    720
    Bullet is 1.583"
    The recommend OAL is 3.15", I have to load to 3.1" as thats my chamber dimensions and im .013" from the lands
    Im getting 2450fps at 39.3gr and according to the Strelok app and of course the weather it should stay sonic out to 1600 yards as it has a BC of .715
    But since this is an experiment, we shall see if the real world data lines up.

    Sent from my VS995 using Tapatalk

  6. #5
    Senior Member straightshooter1's Avatar
    Join Date
    Jul 2017
    Location
    Arizona
    Posts
    506
    Thanks for your reply.

    When I run the numbers through QuickLoad with Sierra's 200 gr SMK (not this new one), it shows that same MV of around 2450 fps with a pressure at a low end (something like 46,000 psi, as I try to recall).

    While you didn't see any keyholing effect, I wonder if it will hold true out at 1000 yds with this load. . . .??? Guess that'll have to be tested, huh?



    Sent from Tapatalk
    Gunguy308 likes this.

  7. #6
    Senior Member straightshooter1's Avatar
    Join Date
    Jul 2017
    Location
    Arizona
    Posts
    506
    [QUOTE=Gunguy308;697916]Bullet is 1.583"
    /QUOTE]

    Interesting that it's .192" longer than the old SMK.

    Now my curiosity is peaked about OTB difference as well as bearing surface. On Sierra's website the pic of this new bullet appears like the bearing surface is less and the boat tail angle significantly changed. Just looking at it, one can see how the BC is so much more than the old one (which has a BC of .565).

    Seems Sierra is trying to compete with Hornady's 208 gr ELD Match and looks a bit like a Berger???

    It's a very intriguing bullet.
    Last edited by straightshooter1; 05-11-2019 at 02:54 PM.

  8. #7
    Senior Member Gunguy308's Avatar
    Join Date
    Sep 2015
    Location
    Phoenix Arizona
    Posts
    720
    Here is the 175gr SMK and 200gr SMK

    Sent from my VS995 using Tapatalk
    straightshooter1 likes this.

  9. #8
    Senior Member straightshooter1's Avatar
    Join Date
    Jul 2017
    Location
    Arizona
    Posts
    506
    At the tip of the 200 gr SMK, looks like there's a definite change in the angle of the slope. The reflection of the light brings it out as you compare that reflection to the 175 SMK.

  10. #9
    Senior Member Gunguy308's Avatar
    Join Date
    Sep 2015
    Location
    Phoenix Arizona
    Posts
    720
    Quote Originally Posted by straightshooter1 View Post
    At the tip of the 200 gr SMK, looks like there's a definite change in the angle of the slope. The reflection of the light brings it out as you compare that reflection to the 175 SMK.
    It definitely had a different angle at the tip

    Sent from my VS995 using Tapatalk
    Last edited by Gunguy308; 05-11-2019 at 05:37 PM.

  11. #10
    Senior Member SatCong's Avatar
    Join Date
    Oct 2014
    Location
    Arizona
    Posts
    869
    Don't know if you ever read this before.
    https://www.accurateshooter.com/ball...or-long-range/

Page 1 of 7 123 ... LastLast

Ads

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Similar Threads

  1. WTT .308 SMK 168 for SMK 175
    By Banshee8 in forum Classifieds - Ammunition
    Replies: 0
    Last Post: 11-22-2013, 06:07 PM
  2. 168gr SMK or 175gr SMK?
    By Shocktroop0351 in forum Cartridges & Calibers
    Replies: 10
    Last Post: 10-17-2008, 08:52 PM
  3. 175 SMK vs 168 SMK
    By Ringo1508 in forum Cartridges & Calibers
    Replies: 23
    Last Post: 01-24-2008, 07:16 PM
  4. 200gr bullet for .308 uses
    By chase007 in forum Cartridges & Calibers
    Replies: 1
    Last Post: 08-09-2006, 06:20 PM
  5. 6.5mm 200gr bullets, do they exist?
    By We7det_el_qetal_ra3d in forum Cartridges & Calibers
    Replies: 5
    Last Post: 03-15-2005, 09:41 PM