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Thread: Heavy 308 loads

  1. #1
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    Default Heavy 308 loads

    Looking for bison legal 308 load. Regulations require a 30 caliber 180 grain bullet that generates 2800 foot pounds. Buffalo Bore sells 308 loads that make it so I know its possible. Does anyone have any info on handholds that will do it???

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    Looks like anything going around 2650 or a little better will do it according to my information.

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    Member coop22250's Avatar
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    The factory Federal Premium 180 partitions in the red box are close. If you could get a shade hotter you could do it.


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    Member coop22250's Avatar
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    https://load-data.nosler.com/nosler-...-Win-175gr.pdf


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    Looks like Ike you can do it.

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    Years ago, Lanche and I headed to the range running a gamut of 200 grain 308 bullets over the chronograph that met the legal requirement for bison on the Alaska side of the regs.

    Depending on barrel length, 2450-2550 fps was the norm for everyone running mr-2000 powder. 46-47 grains was the sweet spot for max loads for three different handloaders. MR-2000 gave less deviation in velocity over reloader 17 for some folks:

    http://forums.outdoorsdirectory.com/...-Results/page2

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    I just looked on the Delta Bison Hunter Orientation and it says a 200g bullet with 2000 FP. Where are you hunting?

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    Quote Originally Posted by Daved View Post
    I just looked on the Delta Bison Hunter Orientation and it says a 200g bullet with 2000 FP. Where are you hunting?
    In Yukon Territory the minimum load is a 180 grain bullet at 2800 ft pounds. Basically designed around the 30-06 as a minimum. 308 might make it loaded heavy and with a long barrel.

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    Got it. Much more simple then.

    180 TSX to near maximum. Get all the weight retention you can out of the bullet and go kill stuff.

    If you can't shoot those long TSX bullets, then get some Aframes and then go kill stuff.

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    If I was going to use a 308 for Bison in the Yukon I'd chronograph my loads on Video and present the information to the folks on Burns Road before venturing out. Arguing with enforcement 50 miles in about a very marginal caliber that can only make it by hot loading would possibly end up with a confiscated firearm, an ongoing dispute and a ruined hunt.

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    How the heck do you enforce such a rule?

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    Yukon,

    I sent you a PM. The load I sent isn't by any means a recommendation, it's just to show that it can be done. Work up to safe levels in your rifle.
    "Beware the man with only one gun; he may know how to use it."

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    Quote Originally Posted by yukon254 View Post
    Looking for bison legal 308 load. Regulations require a 30 caliber 180 grain bullet that generates 2800 foot pounds. Buffalo Bore sells 308 loads that make it so I know its possible. Does anyone have any info on handholds that will do it???
    You mean an 06 or a 300wm.... 😁

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    Quote Originally Posted by ptarmiganted View Post
    How the heck do you enforce such a rule?
    As no one carries a chronograph on a Bison hunt I believe it's more of a list thing. I'd be worried a 308 would cause trouble no matter how hot it was loaded while a 30-06 with a mild loading would generally pass muster. You might win in the long run but it could get ugly. Who needs it?

  15. #15

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    As mainer mentioned above we did some work ups with RL-17 and 2000-MR powders and 200 grainers.

    I found I got better velocity and accuracy with RL-17 and 200 grainers in my .308. Was able to get 2550 fps with my 20" barrel .308 with 200 grain partitions and RL-17 powder.

    But 2000-MR was better for 180 grainers in which I was able to get 2650 fps with the same 20" barrel.

    Hope that helps.

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    Member mainer_in_ak's Avatar
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    Quote Originally Posted by Alaska_Lanche View Post
    As mainer mentioned above we did some work ups with RL-17 and 2000-MR powders and 200 grainers.

    I found I got better velocity and accuracy with RL-17 and 200 grainers in my .308. Was able to get 2550 fps with my 20" barrel .308 with 200 grain partitions and RL-17 powder.

    But 2000-MR was better for 180 grainers in which I was able to get 2650 fps with the same 20" barrel.

    Hope that helps.
    half a decade later, seems we all smartened up a bit and simply sent our rifles off to become 358 winchesters. Nowadays a monthly phone and internet bill is more money than a rebore from Jesse Ocumpaugh.

  17. #17

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    Quote Originally Posted by mainer_in_ak View Post
    half a decade later, seems we all smartened up a bit and simply sent our rifles off to become 358 winchesters. Nowadays a monthly phone and internet bill is more money than a rebore from Jesse Ocumpaugh.
    Well yeah. When I can shoot 200s slightly faster with 4" less barrel length and still shoot 225s at 2400 fps given I don't shoot far enough for BC to matter its kinda a no brainer.....if you reload

  18. #18
    Member Float Pilot's Avatar
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    Model Seven Rem after re-stocking & bedding: 18 inch barrel. 308 Winchester


    200 grain
    Speer " Grand Slam" flat base soft point
    42.0 grains Reloader 15
    Federal once fired brass.
    CCI-200 primer
    COL: = 2.798 inch light crimp.
    Velocity at 15 feet = 2,395 fps average So the real muzzle velocity is over 2,400 fps from my short barrel
    Group at 100 yards = 1.0 inches.

    Muzzle energy 2,558 foot pounds. from my 18 inch barrel Retained energy at 100 yards = 2,179 foot pounds. LEGAL

    A 22 inch barrel would give you 2,800 foot pounds at the muzzle, or 2,370 ft lbs at 100 yards. using my same hand load.



    From the Fish and Game WEB site:
    Weapons Legal for Bison Hunting


    Bison may be shot with any centerfire rifle, handgun, muzzleloading rifle, bow-and-arrow or crossbow that meet the criteria listed below:

    • Rifle/handgun: must fire a 200 grain or larger bullet, which retains at least 2000 foot-pounds of energy at 100 yards. A .30-06 with a 220 grain bullet is about the minimal weapon that meets this specification.
    • Muzzleloader: muzzle-loading rifles must be .54 caliber or larger, or at least .45 caliber with a 300 grain or larger elongated slug. Further, for safety reasons, those hunting with muzzleloaders must also have within easy reach a smokeless powder rifle meeting the centerfire rifle requirements listed above.
    • Black Powder cartridge rifles: must fire a 400 grain bullet or larger loaded with a minimum of 70 grains of black powder or equivalent (.45-70 with a 400 grain bullet or a .44-90 with a 550 grain bullet).
      Not Legal .45-70 loaded with 55 grains of black powder, or a .45-70 with a 330 grain bullet.
    • Bow: longbows, recurve bows, or compound bows are permitted, but they must have a peak draw weight of 50 pounds or more. Arrows must be at least 20 inches in overall length, and tipped with unbarbed, fixed or replaceable-blade type broadheads. Arrow and broadhead together must weigh at least 300 grains total weight. ADF&G strongly recommends that bowhunters have a rifle close at hand.
    • Crossbow: must have at least 100 lbs. peak draw weight and at least 14 in draw length. The bolt must be 16 or more inches in length, tipped with unbarbed fixed, replaceable or mechanical/retractable blade. The bolt and blade together must weigh a total of 300 grains or more.
      No electronic devices may be attached to the crossbow.
    Floatplane,Tailwheel and Firearms Instructor- Dragonfly Aero
    Experimental Hand-Loader, NRA Life Member
    http://site.dragonflyaero.com

  19. #19
    Member Steven_JR's Avatar
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    All of this talk is making me think about loading up some rounds to try myself.

    Already have a Rem 7 in .308, 200gr Sierras, and some RL-17 on hand.

    Someday I'll find a project rifle to rebore to .358, but this might be the poor man's version until then!

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  20. #20

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    Quote Originally Posted by Steven_JR View Post
    All of this talk is making me think about loading up some rounds to try myself.

    Already have a Rem 7 in .308, 200gr Sierras, and some RL-17 on hand.

    Someday I'll find a project rifle to rebore to .358, but this might be the poor man's version until then!

    Sent from my SAMSUNG-SM-G930A using Tapatalk
    Only reason I didn't rebore my Model 7 .308 to .358 was because its my first big game rifle and my dad gave it to me so I wanna keep it as is.

    If you have 200 SGK on hand like you mentioned I was able to get over 2500 fps with those as well and the BC is pretty darn good actually.

    That said they are pretty long and depending on seating depth you will have a bit more room for powder with a shorter and tougher Nosler Partiion, Swift A Frame, or Woodleigh Weldcore (the shortest 200 bullet I could find).

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