300 weatherby mag load data?

D@D

January 07, 2014 06:47

A buddy of mine just bought one & he is looking for some suggestions on what powders to try out or what worked good for ya'll? He'll be using winchester LRM primers, weatherby brass & a sierra 175 gr hpbt match bullet. Mostly just need accurate target loads.

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  charliemeyer007

  January 07, 2014 08:44

  If it were mine I would try and use a ball powder like H1000.

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  guntech59

  January 07, 2014 09:04

  Alliant RL25, Hodgdon H1000, Ramshot Magnum.
  
  Those give the best velocities, according to their manuals.
  
  I have no actual experience, but I can read the hell out of a manual. [:D]

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  62fuelie

  January 07, 2014 15:09

  If he is willing to use heavy bullets (200gr +) look at the new Re-33. I have been using Alliant's recommended load of 89 grains with the Sierra 220 Match King. At 600 yd. it groups better than I can hold - a buddy of mine is printing near 1/2 minute groups. I haven't tried the Winchester mag primer. Years ago a Weatherby rep told me that the only primers they recommend were the Federal Mag Rifle and the CCI mag rifle. I've been using them since with no complaints. I anneal and trim every 5 loadings.

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  ChetStafford

  January 07, 2014 16:12

  Don't overlook Retumbo in a cartridge of that capacity.

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  Ray Boone

  January 08, 2014 21:46

  I don't use it for target, but it's been rebarreled with a short freebore, so loads are considerably less, more akin to 300 Win Mag, while chronographs show velocities similar to what I used to get with the original made in USA barrel; but I like 180 gr bullets with H4831 and Fed 215 primers.

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