7mm Rem Mag 175gr “Realistic Velocity”

Discussion in 'Reloading' started by Ingwe, Sep 29, 2018.

  1. Ingwe

    Ingwe Well-Known Member

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    I am working up a load for my 7mm Rem Mag 26” 1:8 barrel. Of course accuracy is my 1st priority but I am wondering what velocity you guys think I should be happy to attain....what is the most that I should expect to get.

    I am using RL33 and I have a quick load print out but I’m not sure where to start and what I should be happy getting out of it

    Thanks Fellas!
     
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  2. jwing

    jwing Well-Known Member

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    My 7 rem 28 inch proof. 195 berger 3000 rl33- n570 I shoot n 570, 180 hyb 3050 h 1000.
     
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  3. Ingwe

    Ingwe Well-Known Member

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    Wow that's FAST!

    I Just don't know where to start with the quick load....
     
  4. lancetkenyon

    lancetkenyon Well-Known Member

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    2950-3050 should be fairly easily attainable in a 7RM pushing 175s depending on your rifle and powder choice.

    I shoot a 180 Hybrid over H1000 (not the fastest powder, but ridiculously accurate and stable) @ 2996fps into the low .2s.

    I also shoot the 184 Hybrid over RL26 @ 3055fps. That load is still in development stages, but in the .3s so far.

    I loaded for a buddy's Lane Precision 7RM pushing the 175 Berger Elite Hunter over H1000 @ 2975fps that shoots in the low .2s.
     
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  5. Ingwe

    Ingwe Well-Known Member

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    THANKS for the reply Lance!

    I have a ton of RL33 in a 26" 1:8 barrel and a quick load chart so I would like to try it but I don't know where I can safely start.

    I don't know if I should start at the 1st "Near Maximum" or lighter powder charge....all liability aside;)
     
  6. lancetkenyon

    lancetkenyon Well-Known Member

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    I would start middle of the road and work up.
     
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  7. BallisticsGuy

    BallisticsGuy Well-Known Member

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    Punching above 3k fps just adds heat and pressure and barrel wear. Once you're around 3k, call it a day. 100fps isn't going to give you anything magical. 2950-3050 is plenty.
     
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  8. thatguyshm

    thatguyshm Well-Known Member

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    I shoot mine at 2920 with H1000 and the 180 Berger. I shoot consistently under half MOA. Last trip out I shot a 1.25" 300 yard three shot then a 1" CTC at 450. I have to rechrono just to verify but I'm waiting for cooler weather closer to hunting season. My 450 group was about .75 MOA high, but my 300 yard was spot on.

    I see no reason to really push the 7 RM once you get about 160gr bullets, the bullet design slips through the air so much better, I'd rather get a few more loadings on my brass. Just my thoughts.
     
  9. mallicoat

    mallicoat Member

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    All depends on pressure signs and of course accuracy. My 7MM rem mag with a 175 grain bullets start to show pressure signs around 2950FPS. That's with the chronograph about 15 ft from the end of the gun. With that said use your chronograph and watch for pressure signs and play around with the load development. Start low and work up your load by development. At the end of the day a LOW SD is what you want to achieve. Personal my sweet spot for 175 grain bullets is around 2925 FPS.