RBROS 300 Win Mag - Berger load data

Discussion in 'Long Range Hunting & Shooting' started by live2huntelk, Nov 2, 2018.

  1. live2huntelk

    live2huntelk Member

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    Oct 29, 2017
    I am interested in seeing what others load data for RBROS 300 Win mag rifles. Looking to compare load data.

    Looking for 210 & 215 Berger load information....

    - Brass (manufacturer and prep)
    - powder (brand and grains)
    - seating depth
    - primer
    - velocity
    - group size

    I currently have a Carbon Hunter
    - Norma brass (fire formed - using Redding comp dies)
    - Berger 215
    - 0.015 off lands
    - H1000 76.5 g
    - CCI250
    - 2900 ft/s
    - ~0.5 MOA
     
  2. trhall

    trhall Well-Known Member

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    Aug 10, 2010
    R-Bros LWLRH
    - Win brass (fire formed, neck turned - using Redding comp bullet seating die)
    - Berger 215
    - 0.020 off lands
    - H1000 76.7 g
    - CCI250
    - 3050 ft/s
    - ~0.25 MOA (sub 1/2'' @ 200 yds) Mod 70 with 76.5gr H1000 & Berger 215 Hybrid.jpeg
    12 one shot kills on antelope and elk 132 yards to 647 yards 528 Yard goat.jpg #2 @ 353.jpg Doe 512 yards.jpeg IMG_20181027_180500.jpg
    1 2 shot kill 6 point bull elk @ 629 yards
     
  3. live2huntelk

    live2huntelk Member

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    Thanks for posting....
    Looks like you have it dialed in and lots of animals to validate it. I need to get more trigger time at longer distances.
     
  4. trhall

    trhall Well-Known Member

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    Broz started a revolution when he started developing hunting data with the 215 and H100 a few years ago. I have found as he did that there is simply not an easier combo to develop a load for the 300 win mag than the 215 hybrid and H1000. I've developed loads for 4 different rifles with this combo so far and every one has been a /12 MOA or better performer.
    Continue the journey. It's allot of fun. I have 2 doe antelope to kill in Wyoming in the next couple weeks and I'm hoping to get at least one in the 700 yard range.
     
  5. live2huntelk

    live2huntelk Member

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    Hopefully the stars align and you get to tag one 700+...
    I am new to the long range game ....it is additively challenging. Sam Millard and Broz have helped me get started with the 300WM/Berger 215 journey. I have limited options to shoot 400+ yrds in Ohio....was looking into trying to find some PRS or shoots to get more trigger time in different shooting positions at longer distances.
     
  6. trhall

    trhall Well-Known Member

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    2 things that really helped me alot to develop much better shooting skills. The first was plenty of bench time shooting at 200 yards until I had my load and rifles capable of sub 1/2 MOA groups repeatable. For me I was lucky enough to have 2 rifles that I could shoot 1/2" groups with at 200 yards once I got everything dialed in. Many people have different opinions about shooting from the bench but for me it helps me eliminate many variables from the equation when I'm trying to optimize my rifle or load.Once I'm satisfied with them I move to field shooting positions from there on out to practice.

    The other thing that really helped me alot was I starting shooting clay pigeons from field positions out in the hills. I started at 400 yards and over time eventually moved them out to 600 yards. They are a small target, about 3 1/2 inches and you get instant feedback. I'm now about 85 - 90% first shot hit on them at 600. I use them to "warm up" when I want to shoot at 1000 and it really helps me mentally.

    Best of luck buddy, if you train yourself to shoot small targets at 400 when you do get an opportunity to stretch it out you'll be a lot more successful...