Using Strelok's zero offset to correct for no muzzle brake - Page 2
Page 2 of 2 FirstFirst 12
Results 11 to 19 of 19

Thread: Using Strelok's zero offset to correct for no muzzle brake

  1. #11
    Distinguished Member racer88's Avatar
    Join Date
    Dec 2009
    Posts
    9,795
    Quote Originally Posted by bttbbob View Post
    Here is a fact. Barrel harmonics has nothing to do with it. No two barrels will have the same change in barrel harmonics and no two barrels have the same barrel harmonics off the lathe.
    What is the mechanism or forces in play that cause the POI to shift so much with / without the muzzle brake? I expected some, just because anything on the barrel is going to affect ballistics. Like the guy I saw at the range, resting his barrel on the rifle rest he was using.

    But, I didn't expect that much shift from a muzzle brake.
    NRA Certified Pistol Instructor
    NRA Certified Range Safety Officer
    NRA Life Member

    "Dances with guns."

  2. #12
    Distinguished Member Caleb's Avatar
    Join Date
    Sep 2011
    Location
    Earth
    Posts
    5,478
    Quote Originally Posted by racer88 View Post
    I'm trying to remember... I believe 9:00 wind at 10-ish mph for the first stage. Then the rain came through and wind went to nearly zero. The POI was 2 MOA higher than Strelok calculated (based on my zero with the brake. The change was all elevation. 2 MOA UP.

    But, at the 100 yard range this Sunday, wind wasn't a factor at all. With the rifle zeroed WITH the muzzle brake, when I removed the muzzle brake, the POI went up 1-1/2 MOA. Straight up.
    Just ruling it out because, if it was a 12 or 6 full value wind...... it could of played a role in elevation. Your test on Saturday pretty much ruled that out tho.


    Sent from my iPhone using Tapatalk
    __________________________________________________ _

    **FIGHT WHEN YOU FEEL LIKE FLYING**


    COTEP 717

  3. #13
    Distinguished Member racer88's Avatar
    Join Date
    Dec 2009
    Posts
    9,795
    Quote Originally Posted by Caleb View Post
    Just ruling it out because, if it was a 12 or 6 full value wind...... it could of played a role in elevation. Your test on Saturday pretty much ruled that out tho.


    Sent from my iPhone using Tapatalk
    True about head / tail winds at the longer distances. But, yeah... I have to admit I was surprised (and relieved) that when I removed the muzzle and shot a group that it went a full 1-1/2 MOA up!
    NRA Certified Pistol Instructor
    NRA Certified Range Safety Officer
    NRA Life Member

    "Dances with guns."

  4. Remove Advertisements
    FloridaConcealedCarry.com
    Advertisements
     

  5. #14
    Distinguished Member Caleb's Avatar
    Join Date
    Sep 2011
    Location
    Earth
    Posts
    5,478
    Quote Originally Posted by racer88 View Post
    True about head / tail winds at the longer distances. But, yeah... I have to admit I was surprised (and relieved) that when I removed the muzzle and shot a group that it went a full 1-1/2 MOA up!
    Well, at least you can add this to your DOPE book .


    Sent from my iPhone using Tapatalk
    __________________________________________________ _

    **FIGHT WHEN YOU FEEL LIKE FLYING**


    COTEP 717

  6. #15
    Distinguished Member racer88's Avatar
    Join Date
    Dec 2009
    Posts
    9,795
    Quote Originally Posted by Caleb View Post
    Well, at least you can add this to your DOPE book .


    Sent from my iPhone using Tapatalk
    I just looked at my DOPE book, and all I saw was your picture!
    NRA Certified Pistol Instructor
    NRA Certified Range Safety Officer
    NRA Life Member

    "Dances with guns."

  7. #16
    Super Moderator
    BeerHunter's Avatar
    Join Date
    Dec 2013
    Location
    PBC
    Posts
    25,161
    Quote Originally Posted by racer88 View Post
    I just looked at my DOPE book, and all I saw was your picture!
    -BH

    Member: Florida Carry, COTEP 766, SAF, GOA, NRA Endowment Life
    FFL 03, NRA CRSO & CI: P-R-S-PPITH
    Former USAF NCO 1980-1984, DoD 1987-Present
    Please consider joining NRA at www.nra.org and Florida Carry at www.floridacarry.org

    “The greatest danger to American freedom is a government that ignores the Constitution.”
    -- Thomas Jefferson, Third President of the United States

    "Those who 'abjure' violence can only do so because others are commuting violence on their behalf."
    -- George Orwell


    "The ultimate result of shielding men from folly is to fill the world with fools."
    -- Herbert Spencer

  8. #17
    Distinguished Member Caleb's Avatar
    Join Date
    Sep 2011
    Location
    Earth
    Posts
    5,478
    SMH


    Sent from my iPhone using Tapatalk
    __________________________________________________ _

    **FIGHT WHEN YOU FEEL LIKE FLYING**


    COTEP 717

  9. #18
    Distinguished Member racer88's Avatar
    Join Date
    Dec 2009
    Posts
    9,795
    Quote Originally Posted by Caleb View Post
    SMH


    Sent from my iPhone using Tapatalk
    Heh heh heh! Your emoji didn't come through, though. I figured it was a "middle finger" emoji?!?
    NRA Certified Pistol Instructor
    NRA Certified Range Safety Officer
    NRA Life Member

    "Dances with guns."

  10. #19
    Distinguished Member Caleb's Avatar
    Join Date
    Sep 2011
    Location
    Earth
    Posts
    5,478
    No but it can be.!!!! Lol


    Sent from my iPhone using Tapatalk
    __________________________________________________ _

    **FIGHT WHEN YOU FEEL LIKE FLYING**


    COTEP 717

Sposors

Posting Permissions

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