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Thread: 7mm-300 win mag

  1. #1
    Paid Member calib's Avatar
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    7mm-300 win mag


  2. #2
    Nice! I like that round.

  3. #3
    Registered User davemuzz's Avatar
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    I dislike being beside a guy at the range with a muzzle break. But, I do like the way that muzzle break looks. Nice rifle....how does it shoot??

  4. #4
    Paid Member calib's Avatar
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    Quote Originally Posted by stangfish View Post
    Nice! I like that round.
    do you have experience with the round? i am going to be loading for it soon to get a load working

  5. #5
    Paid Member calib's Avatar
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    i have not shot it yet, soo much going on rite now, trust me i am anxious

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    Ok,I'll bite. What's the difference and/or advantage over a Rem 7 mag.?
    12 LRP 243 AI.McGowen bull,200 action,Shaw 308 HB,.116 action,Shaw 6mmAI ,110 6.5x55,CBI varmint.All with SAV-2's

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    Paid Member Jamie's Avatar
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    Quote Originally Posted by 243LPR View Post
    Ok,I'll bite. What's the difference and/or advantage over a Rem 7 mag.?
    150-175 fps and still fits in a magazine with 180 grain Bergers.

    Calib, I currently own one and have shot it to 1200 yards. I was unable to make it out today to shoot it at 1 mile but it will happen. I settled on H1000 for th powder. Simple to load for and no unexplained issues so far. A Swedish Dr. (PHD kind not MD kind) has nicknamed it the 7mm Dingato.
    More shooting, less typing.

  8. #8
    do you have experience with the round? i am going to be loading for it soon to get a load working
    No sir. I like all things 7mm and that is a little more than a 7RM.

    What is the muzzle velocity Jamie?
    Last edited by stangfish; 07-08-2013 at 12:39 PM.

  9. #9
    Paid Member Jamie's Avatar
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    The load I settled on ran 3094,3098 and 3091 fps respectively over the chrono. My shooting buddy using the same powder and bullet combo in his 7mm Rem Mag Sendero was getting low to mid 2800's . EDIT--Make that low to mid 2900s fps.
    Last edited by Jamie; 07-09-2013 at 10:42 AM.
    More shooting, less typing.

  10. #10
    Paid Member calib's Avatar
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    Quote Originally Posted by Jamie View Post
    150-175 fps and still fits in a magazine with 180 grain Bergers.

    Calib, I currently own one and have shot it to 1200 yards. I was unable to make it out today to shoot it at 1 mile but it will happen. I settled on H1000 for th powder. Simple to load for and no unexplained issues so far. A Swedish Dr. (PHD kind not MD kind) has nicknamed it the 7mm Dingato.
    what kind of load data could you share with me?

  11. #11
    Paid Member calib's Avatar
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    what length barrel? i have a 29" 8.4:1

  12. #12
    Paid Member Jamie's Avatar
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    Mine is a 26" so you could/should hit 3250 fpseasily. Around there is where your speed kinda hits a wall without jumping up big amounts of powder. I will PM you some info.
    More shooting, less typing.

  13. #13
    Paid Member calib's Avatar
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    you shooting the 180 berger?

  14. #14
    Paid Member calib's Avatar
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    well another learning phase working with this rifle. i have 21 rounds through the barrel which mean little to nothing, because i got a wrong reading of oal length using just a sized down 300 win mag gauge for the hornady set up. my first 9 shots where jammed about 100 thousands, came home with a zeroed gun at least, did some measuring and talked to bill about what is going on, brass was fine, but bullets were going in too far, so i put a bullet in a fired case and shoved it in being all marked up with sharpie i could see where it was pushing it to, so i measured that and got 100 thousands less so i went 103 thousands shorter, took those out and fired them off and still had some issues, came home talked to bill about the gauge and then got a hold of brad and asked him to machine out one of my fired cases to make a clean gauge for me, got that done found out over all i was about 150 thousands jammed with the first 9. now i have a baseline to work from, but even with a sized piece of brass once fired i get resistance closing the bolt, so now we are thinking head space/ shoulder bump which i have never bumped any cases so this is all new. i also sent an e mail to where the reamer came from to try to get a diagram for measurements of my chamber. hope to get this all figured out with in the next few weeks and out shooting again. this gun doesn't kick any more than a 243 liking it so far.

    in my pressure test which i am sure numbers are not worth much i went from 73-77 grains with no real pressure problems with velocities ranging from 3050-3222fps, with all 9 shots within 3" at 200 yards.

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    There is a good thread going on in the wildcat reloading section right now about 7mm/.300 wildcats. Nice looking rifle by the way, how about a build sheet?

    Bob
    It's better to shoot for the moon and hit the fencepost than to shoot for the fencepost and hit the ground!

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