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Very Hot Topic (More than 100 Replies) 308 Subsonic (Read 26387 times)
MarkJ
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Re: 308 Subsonic
Reply #150 - Jan 26th, 2011 at 11:37pm
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Time I started tinkering with the 308 rabbit load again now the pocket rifle has gone....

Last time I used the 220 grain subs I heard a light crack, just wondering if summer and winter temp differences can influence velocity ;  I mean loading in the winter, firing in the summer etc, anybody come across this ?

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Alex B
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Re: 308 Subsonic
Reply #151 - Jan 27th, 2011 at 9:00am
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Hi mark,
Its been a while since I looked at this thread, however I noticed a big difference in my 7.62x39 sub loads between summer and winter, I developed my load in winter and come summer they were "cracking" rather loudly.
Throw them over the chrony and compare the velocities to your previous load notes, I would be very interested to know just how much difference there is if any between summer and winter velocities.
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MarkJ
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Re: 308 Subsonic
Reply #152 - Jan 27th, 2011 at 11:36am
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Thanks Alex B, yes, I remember now, the last shooting session WAS over the chrony and although I didn't record the figures, I'm sure I was getting about 1040fps for a load that was supposed to go 950fps. Next time I'm out I'll confirm. 
If thats the case then I may have to look at 2 loads for subsonic, warm and cool temp loads.
May even have to experiment with load development with the chrony and a thermometer.

Seems I've read this before somewhere but wasn't paying much attention  Roll Eyes

cheers

  
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310cadet
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Re: 308 Subsonic
Reply #153 - Jul 14th, 2019 at 10:13pm
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A bit late getting to the party.
I put some 150g cast hollow points from TradeMe in front of 7grains of Trailboss in my Baikal .308 folder, got about 1000fps and 11 mm three shot group at 50 metres off sandbags on the bench.
Quiet and stunningly accurate so no excuses for not neck shooting a deer once you have sorted out how to hold over for various ranges.
Cheers PJ
  
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Micky Duck
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Re: 308 Subsonic
Reply #154 - Jul 15th, 2019 at 4:55pm
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yes you CAN neck shoot a deer etc with them but PLEASE TAKE NOTE......if you miss bone your deer will bugger off wounded and wary...you get NO shock effect at subsonic speeds.
  
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thebomb
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Re: 308 Subsonic
Reply #155 - Jul 15th, 2019 at 6:16pm
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Shoot them in the ear ...or crease of the shoulder and be prepar3d to track a lot..more like bow hunting.
  
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