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Normal Topic Subsonic 308 Load (Read 215 times)
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Subsonic 308 Load
Nov 29th, 2018 at 2:14pm
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I've been mucking around making a subsonic load for my 308 for hunting over my dog.
Here's a look at the terminal ballistics on goats.

https://youtu.be/LN_AM5VqkyY

  
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Micky Duck
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Re: Subsonic 308 Load
Reply #1 - Dec 1st, 2018 at 7:26pm
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interesting how trail boss loads seem to break all the rules compared to other powders..... eg a 150grn subsonic loading in .308 seems to be around the 7-8grn of powder range yet the 200grn around 10grns

supersonic with normal powders the weight of powder goes down as weight of projectile goes up.....
  
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Re: Subsonic 308 Load
Reply #2 - Dec 3rd, 2018 at 7:23pm
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Very cool, have a mate wanting to do the same but with his 7mm08.

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Re: Subsonic 308 Load
Reply #3 - Dec 4th, 2018 at 8:32am
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Micky Duck wrote on Dec 1st, 2018 at 7:26pm:
interesting how trail boss loads seem to break all the rules compared to other powders..... eg a 150grn subsonic loading in .308 seems to be around the 7-8grn of powder range yet the 200grn around 10grns

supersonic with normal powders the weight of powder goes down as weight of projectile goes up.....

Yes, but with normal supersonic loads you are trying to keep pressure within safe limits, so you need to reduce powder charge as bullet weight goes up. Subsonic you don't have high pressure issues, so you can add more powder to keep velocity the same (heavier bullet needs more push to achieve the same speed)
  
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