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Thread: 12.5 inch barrel vs 13.7 inch barrel velocity

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  1. #1
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    Quote Originally Posted by markm View Post
    We've run the 10.5 out to 750 yards... with a spotter. The only reason it's not a regular thing is because you don't put glass worthy of that distance on a 10.5 barrel. So it's irons or an RDS with crazy holdover.
    The real problem with SBRs isn’t distance (within reason); it’s estimating that distance accurately. The shorter you go, the less forgiving of range estimation errors. Or bad data entry in your ballistic calculator.

    Quote Originally Posted by JediGuy View Post
    Nice. Cut or MosTek? Unless someone is making a 13.5” now…
    MosTek.
    RLTW

    “What’s New” button, but without GD: https://www.m4carbine.net/search.php...new&exclude=60 , courtesy of ST911.

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  2. #2
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    Quote Originally Posted by 1168 View Post
    The real problem with SBRs isn’t distance (within reason); it’s estimating that distance accurately. The shorter you go, the less forgiving of range estimation errors. Or bad data entry in your ballistic calculator.
    Absolutely. When we shoot crazy shots like that it's just a "sling it" and correct effort. Without the spotter fixing the misses, I could should gobs of ammo and never have an idea if I was close at all.
    "What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v

  3. #3
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    I'm not sure I completely get the 13.7 length. I had one for a while. And, assuming you aren't going to SBR it, by the time you P&W it's the same overall length as the 14.5 P&W. Which is what I eventually sold it for. I do want to build a 12.5 SBR next and play with it along side my 10.3 and 11.5. I think the 12.5 is at the length where a compact LPVO might make sense.

  4. #4
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    Quote Originally Posted by Dutch110 View Post
    I'm not sure I completely get the 13.7 length. I had one for a while. And, assuming you aren't going to SBR it, by the time you P&W it's the same overall length as the 14.5 P&W. Which is what I eventually sold it for. I do want to build a 12.5 SBR next and play with it along side my 10.3 and 11.5. I think the 12.5 is at the length where a compact LPVO might make sense.
    i'm siding more to the 12.5inch barrel to be honest! i have the LMT for long range . Just intrigued when i saw that uk ranger rifle uses a 13.7inch barrel - but military contracts dont always make sense

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