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Thread: Velocity?

  1. #1
    Boolit Buddy Plinkster's Avatar
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    Aug 2010
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    Oregon
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    Velocity?

    I'm not sure if this is the correct place for this post so please move it if needed. I have a Mossberg 810b that I'll be hunting with this year and I didn't have a chance to chrono the load that I'll be using. Not sure if I have enough data for quick load but here goes: RP cases, Winchester magnum large rifle primers, 70.0grs H1000 powder, Sierra 170gr round nose bullets seated to a COAL of 3.300, hope that's enough but I'm not sure. I'd just like to know how far out I can hit with this before it drops 4", I have it zeroed to hit 1" high at 100yds right now and was printing clover leaves at this distance. Thanks guys.
    Is this a......what day is this??

  2. #2
    Boolit Buddy Plinkster's Avatar
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    Aug 2010
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    Oregon
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    I knew I'd leave something out 7mm Rem Mag and BC is .280 above 2500fps and .317 between 2000 and 2500. Thanks
    Is this a......what day is this??

  3. #3
    Boolit Buddy
    Join Date
    Jul 2008
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    Imperial County, CA
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    Your best source for your inquiries regarding ballistics is a Sierra Reloading Manuel. For just about any load you choose to use, there is more information in there than you can mentally digest/retain. I've even used it as a reference for other brands of J-words.

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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