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Thread: The perfect Big 7.

  1. #1
    Member chainsaw's Avatar
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    The perfect Big 7.

    Probably been asked before but thinking about a custom "big 7" & rather than list various cartridges I thought I'd start by describing my Wishlist of performance & attributes and see what u smart chaps have to suggest.
    What I want :
    1. Muzzle velocity 100 - 200 fps faster than 7mm RM. ie launch 162 AMAX at 3150 - 3200 fps or higher.
    2. Barrel length 22 or 23 in max
    3. Short or medium action ( not interested in RUM or STW) - if possible want cartridge shorter than Rem Mag.
    4. Barrel life same or better than Rem mag.
    5. Bare rifle weight 6lb or 6.5 max (will be carbon fibre stock)
    6. Accuracy 0.5 Moa

    I guess you could say I'm thinking about a stretched SAUM or WSM type cartridge (about same length as 284) with 100 - 200 fps over rem mag.
    I love 7mm's and already own a few including those mentioned above.
    What ya reckon?
    Does the perfect big 7 exist ?

  2. #2
    Member BRADS's Avatar
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    Yup the 7/375 fits all your needs.

    https://r.tapatalk.com/shareLink?url...6&share_type=t

    7-375 Ruger

    Sent from my SM-G950F using Tapatalk
    chainsaw likes this.

  3. #3
    MSL
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    Plenty of big sevens but not likely to match or better a rem mag for barrel life.
    chainsaw likes this.

  4. #4
    If your not fast your last Shootm's Avatar
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    Quote Originally Posted by BRADS View Post
    Yup the 7/375 fits all your needs.

    https://r.tapatalk.com/shareLink?url...6&share_type=t

    7-375 Ruger

    Sent from my SM-G950F using Tapatalk
    Yep 7-375 worked well for me this morning.

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    P38, veitnamcam, Kiwi Greg and 1 others like this.

    I Have Sexdaily. I mean Dyslexia! Fcuk!

  5. #5
    Member Cartman's Avatar
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    7mm practical.

    Sent from my SM-G930F using Tapatalk

  6. #6
    Member Ryan_Songhurst's Avatar
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    28 Nosler

  7. #7
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    7mm fat max :-) or one of the lazzaroni cartridge. And the Dakota?

  8. #8
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    Quote Originally Posted by chainsaw View Post
    Probably been asked before but thinking about a custom "big 7" & rather than list various cartridges I thought I'd start by describing my Wishlist of performance & attributes and see what u smart chaps have to suggest.
    What I want :
    1. Muzzle velocity 100 - 200 fps faster than 7mm RM. ie launch 162 AMAX at 3150 - 3200 fps or higher.
    2. Barrel length 22 or 23 in max
    3. Short or medium action ( not interested in RUM or STW) - if possible want cartridge shorter than Rem Mag.
    4. Barrel life same or better than Rem mag.
    5. Bare rifle weight 6lb or 6.5 max (will be carbon fibre stock)
    6. Accuracy 0.5 Moa

    I guess you could say I'm thinking about a stretched SAUM or WSM type cartridge (about same length as 284) with 100 - 200 fps over rem mag.
    I love 7mm's and already own a few including those mentioned above.
    What ya reckon?
    Does the perfect big 7 exist ?
    Don't want much, what about the perfect woman???
    gadgetman and chainsaw like this.

  9. #9
    Member BRADS's Avatar
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    Quote Originally Posted by Friwi View Post
    7mm fat max :-) or one of the lazzaroni cartridge. And the Dakota?
    Do you realise the effort it takes to make one fat max case?

    Sent from my SM-G950F using Tapatalk
    Shootm and Smiddy like this.

  10. #10
    MSL
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    I like the fatmax but it is a far cry from 7mm rem mag in terms of barrel life/throat erosion.

  11. #11
    Member camo wsm's Avatar
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    I had and a few of my mates still run the 7 lrm which is a similar version to the 7/375 but with a longer neck you can get brass and dies from Deadeyes out of a 24 inch tube it will do an honest 3k with 180's or a bit more and 3100 plus with 162's all using adi powder there is no free lunch though more powder in a small hole means less barrel life
    gadgetman likes this.

  12. #12
    Terminator Products Kiwi Greg's Avatar
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    The 7mm Blaser Magnum is an incredible cartridge, punches way above its weight, only a wee way behind the 28 Nosler if at all with 10 + grains of powder less.

    Brass is easy, dies...not so much, the only downside I have seen so far.

    The 6.5-7mm Blaser goes pretty well too

  13. #13
    Member camo wsm's Avatar
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    Quote Originally Posted by Kiwi Greg View Post
    The 7mm Blaser Magnum is an incredible cartridge, punches way above its weight, only a wee way behind the 28 Nosler if at all with 10 + grains of powder less.

    Brass is easy, dies...not so much, the only downside I have seen so far.

    The 6.5-7mm Blaser goes pretty well too
    So what length barrel and what speeds out of what projectiles have you been getting?
    chainsaw likes this.

  14. #14
    Terminator Products Kiwi Greg's Avatar
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    Quote Originally Posted by camo wsm View Post
    So what length barrel and what speeds out of what projectiles have you been getting?
    3000 fps + is easy enough with 180s given a sensible powder & barrel length choice from only 70-71 grains of powder

  15. #15
    Member Cartman's Avatar
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    Quote Originally Posted by Kiwi Greg View Post
    3000 fps + is easy enough with 180s given a sensible powder & barrel length choice from only 70-71 grains of powder
    Surely you'd get that from the practical also? Easy brass dies ect

    Sent from my SM-G930F using Tapatalk

 

 

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