best load for a .338 win mag?

Discussion in 'Ammunition & Reloading' started by cakesterkiller, Apr 2, 2012.

  1. cakesterkiller

    cakesterkiller New Member

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    I'm about to start loading my own for my rifle and just looking to see what everybody else loads?

    from what I've seen so far most people are saying the 225gr is the way to go with this caliber

    i don't need a 1000 target gun but I do take shots out past 600 yards so I'm looking for a very predictable flight path
     
  2. Model70

    Model70 Member

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    I don't have much experience with .338's, but, a couple of years ago we took my uncle elk hunting, he was shooting a 338 win mag. He was shooting federal premium 250 grain noslers. He was taking about 500 yard shots, in about a 5 mph crosswind, and we could see were he was hitting pretty good. (He is a pretty terrible shot and hunter, but trying to get him half way close was a nightmare--long story.) I really like the old nosler partition load, if I had a 338 I'd start with trying to match that. I hope this helps!
     

  3. cakesterkiller

    cakesterkiller New Member

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    just more research and trial and error i guess :) thanks for the direction

    any idea how fast they were moving?
     
  4. Model70

    Model70 Member

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    The only info I can find online says 250 gr nosler partitions at 2660 fps. Seems kinda slow, but with the higher BC and higher weight it evens out. I was hoping if I answered your post it would bump it up and get someone more knowledgeable in 338's to answer. Sorry if I'm not much help. :(
     
  5. Gonzilla

    Gonzilla New Member

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    They're probably hunting, be patient, they'll be back....be careful what ya wish for. :D
     
  6. Durangokid

    Durangokid New Member

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    The .338 Win Mag is a very popular hunting rifle in the Rocky Mtns. It will put down elk or moose. It is also carried as protection in case of a Grizz encounter. Most everyone will be shooting 250 Grs. bullets. As for slow the 45-120-550 Sharps is a long range killer lumbering along at 1,200 FPS.;)
     
  7. Model70

    Model70 Member

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    Wrong thread?
     
  8. cakesterkiller

    cakesterkiller New Member

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    well i just got a couple hundred hornady 225gr SST as soon as I get a free day I'm gonna load a few up and see where my rifle likes it at
     
  9. Model70

    Model70 Member

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    SST's have shot really well in everything I've tried them in.
     
  10. cakesterkiller

    cakesterkiller New Member

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    any guidelines for how fast I can push em without ruining my barrel?
     
  11. Model70

    Model70 Member

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    As a general rule, if you shoot smaller bullets at a higher velocity it will be harder on your barrel. My dad zipped 140 partitions out his 7mm at 3200 fps and just had to rebarrel it, only got maybe 1000 rounds through it. He did run a .264 WM down it once, but thats another story. Bigger slower bullets should help it last longer.

    Also letting your barrel cool between shots helps with that. When things start heating up is when a lot of your throat erosion will occur.
     
  12. cakesterkiller

    cakesterkiller New Member

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    what do ya think bout running those 225s at around 2800 fps? too fast to make the barrel last?
     
  13. Model70

    Model70 Member

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    How close is that to your max?
     
  14. cakesterkiller

    cakesterkiller New Member

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    according to the books I've seen with a 225gr the fastest they pushed em out at max load was just under 2900 fps with the powder i have (imr4350)

    i saw on an old TV show somewhere that if the bullet has a BC of .5 and a muzzle velocity of 2800 fps that in theory the drop and flight path of the bullet will line up with the dots on a mil dot scope every hundred yards.... have ya ever heard that before?
     
  15. Model70

    Model70 Member

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    According to my Hornady reload book, a 225 SST max load is 68.6 grains of IMR 4350 going 2800 fps. I'd be careful with that and work up to it slowly.

    I never heard of the mil dot thing.
     
    Last edited: Apr 6, 2012
  16. cakesterkiller

    cakesterkiller New Member

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    just put together six different OAL loads gonna take em out and see which one puts down the best groups

    each cartridge is loaded with federal magnum primers 71.5 gr of imr 4350 and topped off with a 225g hornady SST