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Thread: Help with 338-06AI

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    Member bigswede358's Avatar
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    Default Help with 338-06AI

    Last weekend i worked up a load for my 338-06 AI with 22" barrel. I am using RL 15, cci 200 primers, and Hornady 200 grain bullets. It is a very accurate load. It averages right at 2800 fps. I was wondering if this is all the more velocity I can expect from this bullet/barrel combination? I know this will still be a great hunting load, I was just hoping for a little more velocity. Would a faster powder improve the velocity? I have some IMR 4895 on hand, has anybody used this powder for the 338-06 with good results? Thanks for any help.
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    Member nrc's Avatar
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    I believe the velocities you are getting are good enough for just about anything you'd want to shoot with that bullet

    If you wanted to try 4895, it should work well, but don't expect much appreciable difference in velocity as its not that far off from RL15 in its burn rate.

    A slower powder could get you a higher velocity (within limits), I wouldn't go much further than H3831 in 338-06.

    Nate

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    Member pinehavensredrocket's Avatar
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    happy trails.
    jh

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    Member bigswede358's Avatar
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    Do you think IMR 4320 o H4350 would make a difference?
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    Member nrc's Avatar
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    Slightly. I'd be suprised if it was more than 100 fps or so. Only way to find out is to try some, and chrony the lot.

    Rather than speed up that 200 gr bullet, if you are looking for more power, have you considered going to a 225 or even a 250 grain .338 bullet? A 225 @ 2600 or a 250 @ 2450 fps is big medicine.

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    Member bigswede358's Avatar
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    Quote Originally Posted by nrc View Post
    Slightly. I'd be suprised if it was more than 100 fps or so. Only way to find out is to try some, and chrony the lot.

    Rather than speed up that 200 gr bullet, if you are looking for more power, have you considered going to a 225 or even a 250 grain .338 bullet? A 225 @ 2600 or a 250 @ 2450 fps is big medicine.
    Yeah, but I have a lot of 200 grainers, so i think i'll try them first. And I think i will try some more powders, it'll give me something to do this winter.
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    Moderator Paul H's Avatar
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    From my experience with the 35 whelen AI, I'd say that the ackley is only good for another 50 fps over the parent chambering. All increases of greater than 50 fps are achieved by opperating at pressures higher than 65,000 psi.

    2800 to 2850 sounds like a prudent max for 200's in the 33-06 AI. I'd expect that RL 15 or Varget would be your best choices for 200 and 225 gr bullets, 4350 I'd think would be a bit on the slow side unless you're using 250 gr or heavier bullets.

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    Member bigswede358's Avatar
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    Well i found a powder that worked a little better. Its on the post 338-06 AI load data.
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    Member 1Cor15:19's Avatar
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    I'd expect more than 50 fps at equal pressures, mainly because you can use more of the slower powders, but I've no experience with the 338 in AI guise. I'd give RL 19 a try in the 338/06 AI. It is an excellent powder in the parent cartridge and a little more capacity has to be more better.
    Foolishness is a moral category, not an intellectual one.

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    Moderator Paul H's Avatar
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    True, most people exceed parent cartridge specs by 100-150 fps when they go to an ackley improved chamber, but when those loads are pressure tested they are running over 70,000 psi. There is no free lunch, the extra capacity of the ackley is good for 50 fps, if you want 338 win mag performance, just get a 338 win mag.

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    Bigswede I have two loads worked up for this fine cartridge. The first one, which you will probably be interested in, uses a 200gr Nosler bt with 57.0 gr of IMR 4320. It chronographs @ 2850 and is very consistent and accurate. The second uses a 225 gr Hornady Interbond with 61.0 gr of H4350. It clocks in @ 2725 also with consistency and accuracy. Cheers and good luck.

  12. #12
    Member bigswede358's Avatar
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    I tried H4350 and IMR 4895 today. Great results from the 4895. I published all my data on another post "338-06 AI Load data", check it out. I was surprised and impressed with its performance.
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