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Thread: Hornady #6615 ballistic coeff estimate?

  1. 11-23-2021, 04:10 PM #1
    gareth96
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    Hornady #6615 ballistic coeff estimate?

    Buddy just came over and shot his muzzleloader.. He was using old Hornady 325 gr 45cal bullets (#6615).. solid lead with 4 lube bands. I thought we might be able to use my labradar to get velocity, but I guess the smoke got in the way. He'd like to get a speed, and we know the drop.. about 8.5" at 130yds when zero is 50yds.

    Anyone have a BC estimate for a bullet like this? With that I can zero in on the speed using JBM ballistics..

    THanks
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  2. 11-25-2021, 11:42 AM #2
    tazman
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    NOE has a very similar boolit and lists the BC as .2400.
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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check