Use .311 bullets in a .308??

5mmgunguy

April 22, 2014 08:58

Title says it all. I just got a lot of .311 bullets.

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  Ray Boone

  April 22, 2014 09:20

  I'd suggest a swaging die to narrow them down the .003" or shoot them in one of those Ruger barrels set-up for .311".

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  XXCross

  April 22, 2014 09:24

  Stick with moderate loads and you won't know the difference.

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  p3skyking

  April 22, 2014 09:24

  If they're cast bullets, go ahead. Won't hurt anything.

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  beantownshootah

  April 22, 2014 12:03

  quote:Originally posted by 5mmgunguy
  Title says it all. I just got a lot of .311 bullets.
  There was just a whole thread on this very topic:
  
  http://forums.GunBroker.com/topic.asp?TOPIC_ID=629916
  
  Bottom line, its not optimal, but as a matter of practice, people do this all the time.
  
  Assuming the gun and loads are otherwise OK, another 0.03" isn't going to "blow up" your gun. I think you'll probably see some decrement in potential accuracy, and you may (or may not) see slightly increased wear to your barrel, but that's about it.
  
  If you're really worried about this, just think of it as an excuse to get another rifle! [;)]

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  dfletcher

  April 24, 2014 09:16

  quote:Originally posted by 5mmgunguy
  Title says it all. I just got a lot of .311 bullets.
  
  
  "Got alot of .311 bullets" - assume that means you're reloading, putting them into a case neck sized for a .308 bullet? Hopefully they're boat tails .....[;)]
  
  I'd be curious to know how the reloading goes. I have a CZ 527, it uses .311 sized bullets. But, I'm thinking of getting a T/C Encore barrel and pretty much every maker does .308.
  
  I don't think the increased case neck tension or "barrel as bullet swager" will cause problems, but I'd wonder if reloading them becomes kind of a PITA.

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  v35

  April 28, 2014 16:34

  I shot a lot of Remington 32-20 SP bullets from a 6"- 30 Luger with no high pressure indications.
  In the beginning I used a Lee bullet sizer to reduce bullets to 308 but found it didn't make any discernible difference.
  The Lee sizer made easy work of sizing the 100 gr bullets.

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  chiefr

  April 29, 2014 18:56

  When you mention .311 and .308, I assume you are dealing with a rifle. Most modern .308 bolt guns operate with pressures around 45.000PSI, so do .311 rifles. Some pressures are higher.
  If your bore is a true .308, I would not do it. You are asking for trouble.

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