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9mm Bullet Diameter .355 or .356 ? Help!

Discussion in 'Reloading' started by FyreCalG17, Aug 20, 2011.

  1. fredj338

    fredj338

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    Only if you jack pressures up to near max. Obturation doesnt really happen in low pressures with an undersized bullet. I see it every weekend, 9mm minor loads tumbling on target, usually plated, sometimes coated, all 0.355-0.356" bullets.
     
  2. fredj338

    fredj338

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    If you have more than 2 diff pistols, this can be problematic. I have never slugged a bore. I just start 0.001" over jacketed. If accuracy is good & no leading, gtg. If not, bump up 0.001". Then i just shoot that in all of the diff pistols. I like to keep it as simple as possible.
     

  3. DWB57

    DWB57

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    I'm shooting .356 coated bullets out of my glocks and sigs with good results ,1-3/8" ten shot groups at 15 yds with a rest. I've never slugged my barrels I'm with Fred if they shoot good I don't see a need.