Welcome guest, is this your first visit? Create Account now to join.
  • Login:

Welcome to the NZ Hunting and Shooting Forums.

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed.

Night Vision NZ Ammo Direct


User Tag List

+ Reply to Thread
Results 1 to 12 of 12
Like Tree1Likes
  • 1 Post By Larskramer

Thread: Interesting concept

  1. #1
    Member
    Join Date
    Apr 2019
    Location
    Rotorua
    Posts
    647

    Interesting concept

    So I watched a video on extreme long range shooting and the fella raised an interesting point which I will get to after a few replies but firstly can someone answer this.
    What would be the difference in wind drift as a percentage at 500m when comparing a 300wm vs a 6.5 cm shooting standard round for each of these. I am not familiar with these but this was his example.
    Cheers

  2. #2
    Member
    Join Date
    May 2018
    Location
    wellington
    Posts
    1,797
    What's a standard round ?
    ebf likes this.

  3. #3
    Member
    Join Date
    Apr 2019
    Location
    Rotorua
    Posts
    647
    Something factory I'm guessing about 140gr for cm and 180gr the win mag

  4. #4
    Member
    Join Date
    Dec 2014
    Location
    Palmerston North
    Posts
    90
    Both using the heaviest Hornady super performance for each round at the published velocity

    300WM 180SST at 3130 = 16.7in wind drift
    6.5CM 129 SST at 2950 = 18.0in wind drift

    A difference of 7%. Pretty minimal really and quite surprising as it was only a 129.

  5. #5
    Member
    Join Date
    Apr 2019
    Location
    Rotorua
    Posts
    647
    So if we took say 2 tika t3 let's suppress them both to keep it fair.
    So do you think with the 6.5 you could shoot consistently groups 7% better due to better gun control and reduced recoil? Could you shot moa rather than 1.07 or at 500m 5moa rather than 5.35 the negating the gainmade against wind with the heavier bullet?

  6. #6
    Member Walker's Avatar
    Join Date
    Dec 2011
    Location
    Mangawhai
    Posts
    633
    500 is short range, I'd take the WM over the 6.5 for a few reason's but then I've used magnums for 3 decades

  7. #7
    Member
    Join Date
    Aug 2019
    Location
    Waikato
    Posts
    214
    One shot and under no time pressure - no difference as you got time to read the wind and settle into the shot.
    One shot under pressure - in theory the 300WM as less wind drift if you got it wrong.
    20 shots in a row - I put my money on the 6.5CM for the better group.

    If both rifles weigh the same as this will make a big difference on how they kick...

  8. #8
    Member
    Join Date
    Dec 2014
    Location
    Palmerston North
    Posts
    90
    Quote Originally Posted by Remmodel7 View Post
    So if we took say 2 tika t3 let's suppress them both to keep it fair.
    So do you think with the 6.5 you could shoot consistently groups 7% better due to better gun control and reduced recoil? Could you shot moa rather than 1.07 or at 500m 5moa rather than 5.35 the negating the gainmade against wind with the heavier bullet?

    I’m almost certain I’d shoot better with the 6.5 than the 300. For me I hate recoil so I know my groups would open up on the 300 especially doing something like a gong shoot firing 30 odd rounds.

    In my mindset the wind could be further mitigated going heavy for caliber like the ELDM/ELDX line up in the 6.5, to be honest the biggest governing factor will be how you handle magnum recoil.

  9. #9
    Member Micky Duck's Avatar
    Join Date
    Apr 2015
    Location
    Geraldine
    Posts
    24,797
    huge difference will be WHAT you are trying to shoot way out long..... a gong...the 6.5 a big arsed stag/thar/pig/bull/other critter then the 300 will have more authority and better ability to CLEANLY put it in the non viable catagoury.

  10. #10
    Member
    Join Date
    Apr 2019
    Location
    Rotorua
    Posts
    647
    Yea obviously a few variables but I thought it was an interesting concept. Certainly if you can not be as precise with the bigger calibre the bigger bullet can make up for this I terminal ballistics. As a percentage I was surprised at how small the difference in wind drift was and that by being more precise could potentially make up for this drift.

 

 

Similar Threads

  1. The THLR Concept reticle is official
    By Norway in forum Firearms, Optics and Accessories
    Replies: 36
    Last Post: 13-01-2016, 04:11 PM
  2. THLR Concept reticle
    By Norway in forum Firearms, Optics and Accessories
    Replies: 13
    Last Post: 24-12-2015, 11:00 PM
  3. 1 week build - concept to completion
    By L.R in forum Firearms, Optics and Accessories
    Replies: 20
    Last Post: 11-04-2013, 11:43 PM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Welcome to NZ Hunting and Shooting Forums! We see you're new here, or arn't logged in. Create an account, and Login for full access including our FREE BUY and SELL section Register NOW!!