LR Accubonds too good to be true?

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Engineering101, Feb 15, 2013.

  1. Engineering101

    Engineering101 Well-Known Member

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    I was looking at the new Nosler Long Range Accubonds. They expand all the way down to 1,300 fps minimum terminal velocity and with the huge BCs, they should be impressive. In particular, the 30 cal, 210 grain looks amazing. Nosler lists the BC at 0.730, but since Nosler uses ICAO standards as opposed to standard metro conditions to establish their BCs, I have to multiply their published BC by 1.018 for use with my ballistics program. This results in a BC of 0.743!

    Taking this a bit further, I’m thinking I can get that bullet moving around 3,100 fps when fired out of my 26” barrel 300 RUM. Assuming that 1,500 ft lbs is needed to kill elk and 1,000 ft lbs for deer, that gives effective ranges where I hunt (5,000 ft and above) of 1,550 yards for elk and 2,060 yards for deer. I’m definitely going to have to get a new range finder.

    But then again, I’m having a hard time believing that BC which is right up there with the 300 grain SMK. Anybody got any inside info on this bullet and is it to be believed?
     
  2. mhiltz

    mhiltz Well-Known Member

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    I wish they would make in a 140-150 grain 25 caliber, those are awesome BC's for the 30 cal.!
     

  3. Capt Academy

    Capt Academy Well-Known Member

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    Only time will tell......
     
  4. .284

    .284 Well-Known Member

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    I personally have a hard time believing that the nosler bc's are going to be even close.
    I think that like most manufacturers they are more focused on telling people what they think they want to hear rather than the truth in order to sell products.
    But I guess we will see.....
     
  5. Joe King

    Joe King Well-Known Member

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  6. Nomosendero

    Nomosendero Well-Known Member

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    And .645 would be quite good if the on impact performance is what we expect. It does bother me thou if Nosler is intentionally overstating the BC's to gain intro. attention. It does appear they overstate BC's more than anyone & I use their bullets more than any other, thou Horn. A-Maxes & V-Maxes are cutting into that. I would just prefer to see stated BC's by any company to be accurate.
     
  7. Joe King

    Joe King Well-Known Member

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    I believe that Nosler generates the BC's by a calculator which seems to always generate a high BC, no doubt though that Nosler uses that as a sales pitch. Berger's BC's, though I know at least some are (if not all) generated by rounds fired down range, using (I think) 2 Doppler radar units to track them.

    To high light the difference between the 2 methods you can look at 168gr 7mm Matrix VLD and the static BC VS. the BC generated by Brian Litz using the Doppler method

    Matrix advertised static BC (calc generated) 0.7136

    Brians BC (rounds down range) 0.611 <-- this one is spot on I've tried these bullets
     
  8. barnesuser28

    barnesuser28 Well-Known Member

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    I am pretty sure he uses mics that detect the sound of the bullet flying by and he measures the BC by looking at flight time between mics at set ranges.
     
  9. phorwath

    phorwath Well-Known Member

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    Rumor has it that Nosler's sales' staff define ICAO to mean Inter Continental Altitude Operations. The air is thinner up there...
     
  10. Joe King

    Joe King Well-Known Member

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    Could be, I'd have to look in the book. But since it's at home and I'm at work..... :rolleyes: