HELP!!!! Bullet Diameter

instrumentofwar

April 13, 2005 17:18

Alright, maybe it's a good thing I havent had a chance to shoot my first rounds yet. If any of you reload 45-70 you will notice that most of the bullets are .458", with a few measuring .457". I used Laser Cast 405 gr bullets and followed the data in Lymans newest manual but the diameter of these bullets is .459". I followed the minimum load data to start off with, but how will this affect the pressure of the load. I have tried to find load data for these specific bullets but I am not having any luck.

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  FrancF

  April 13, 2005 20:48

  I think you will be ok, If I recall the bullet Dia. runs + -.002 on cast bullets with some mfg's. I have shot some out of my 45-120-3.25" that have been .459+ the pressure was ok. However I was was shooting mid range loads.
  
  
  NRA Life Endowment Member
  
  

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  Tailgunner1954

  April 14, 2005 02:47

  Cast/swedged lead bullets normaly run .001-.002 over groove diameter, while jacketed are normaly held to groove diameter.
  
  

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  Some guys like a mag full of lead, I still prefer one round to the head.

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  snowtigger

  April 15, 2005 23:20

  My Marlin 1895 likes bullets sized to .460. Those sized to .458 tend to keyhole at anything above about 1300 fps. Jacketed bullets? Do they make 'em for the 45/70???
  
  It ain't what you shoot, it's what you hit.

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  instrumentofwar

  April 17, 2005 22:08

  Thanks for the feedback, got back from the range yesterday. SWEET. Great shooting just feels that much better when you roll your own.
  
  

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