190gr SMK and 308 win... load development

190gr SMK and 308 win... load development

This is a discussion on 190gr SMK and 308 win... load development within the Cartridges & Calibers forums, part of the Sniping Related category; I might join a 1000yd range at which point I'm going to upgrade from reloading 168gr SMKs to something heavier(work good at our 600yd range) ...

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Thread: 190gr SMK and 308 win... load development

  1. #1
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    190gr SMK and 308 win... load development

    I might join a 1000yd range at which point I'm going to upgrade from reloading 168gr SMKs to something heavier(work good at our 600yd range)

    Reason I am thinking 190gr is because our local gun shop has boxes and boxes of them and they aren't moving.

    I have heard of people using 208 a-max with great results... but they are always out of stock so I figured I'd try 190gr'ers.

    I'm currently shooting a savage 10FP 1:10 twist with 24" of barrel (lands length)

    I can get a 168gr moving 2825 fps without any pressure signs(could probably move them faster)

    I'm shooting for 2500-2600fps with the 190gr (or faster)

    I currently am using IMR-4064 but have found people recommending using a slower powder like RL 17 or 19 if I'm going above 175gr in weight.

    Has anyone developed a load that works?

    Thanks,

    MIke.

  2. #2
    Senior Member Stormrider's Avatar
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    Re: 190gr SMK and 308 win... load development

    I use 190g Berger bullets. The powder is Varget and the primer is Wolfe standard. I get about 2600 or so with no pressure signs. I would recommend you start at 41g and evaluate your results. I have a 26in bbl.
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    Re: 190gr SMK and 308 win... load development

    i use 43 grn imr4064 with the 190smk right at 2600 in my 26inch barrelback off some and try it
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    Re: 190gr SMK and 308 win... load development

    If it were my horse to ride I would run N150 or similar speed powder with those 190 grain bullets. With that said I have never heard anyone complain about Varget, RL15 or TAC.
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    Senior Member ddd oo7's Avatar
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    Re: 190gr SMK and 308 win... load development

    I have two boxes of 190g hornady bthp match bullets that i got given to me. will they stabilize in a 1:12 factory remington barrel or should i save my powder and buy some 175-178's?
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    Re: 190gr SMK and 308 win... load development

    I got really good results using 40.5 grains of IMR-4064 behind a 190 SMK, as a matter of fact, that's Sierras recommended "accuracy" load and they tested it using a Savage rifle too. It may not be the speed that you're looking for, though.
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    Senior Member landcbeitner's Avatar
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    Re: 190gr SMK and 308 win... load development

    If you developed an accurate load with 190's you'd be good for 1K but I'd look at other bullets with better BC's for their weight (like the 208's you mentioned). I find 155 scenars to be very accurate to 1300yds at modest velocities (just under 2900fps). I'm not trying to discourage you from using heavier bullets that would no-doubt buck the wind better at 1000, but don't altogether disregard your 168gr load, or even trying lighter bullets (with good BC's for their weight). One load may look better on paper, and may in fact have less drift, but accuracy often wins in the field.

  9. #8
    Senior Member BAS402's Avatar
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    Re: 190gr SMK and 308 win... load development

    Adam,
    Try the new Hornady 178 BTHP, they have a BC of .530 and shoot very well. I load the same charge as my 175 SMK's.
    Sorry to the OP, didn't mean to change the subject.
    Sully

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    Quote Originally Posted by landcbeitner View Post
    If you developed an accurate load with 190's you'd be good for 1K but I'd look at other bullets with better BC's for their weight (like the 208's you mentioned). I find 155 scenars to be very accurate to 1300yds at modest velocities (just under 2900fps). I'm not trying to discourage you from using heavier bullets that would no-doubt buck the wind better at 1000, but don't altogether disregard your 168gr load, or even trying lighter bullets (with good BC's for their weight). One load may look better on paper, and may in fact have less drift, but accuracy often wins in the field.
    I realize this is a very old thread but I've recently done load development with Berger 190 Juggernauts and they have a G1BC of over .600. I shoot at a 1000 yard range with electronic targets. The sensors need the round to be well into supersonic speeds to register the shots. I was shooting 178g ELD Match bullets with varget loaded pretty hot at about 2780 muzzle velocity. When they reached the 1000 yard target they were moving at 1220 fps. The 190g Bergers with a 2615 Muzzle velocity were still moving at 1350 fps @ 1000 yards. This was a real eye opener moment for me about how much B.C. and weight affects velocity. I was really surprised by how much velocity the 190s retained!

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    Quote Originally Posted by Brutalwarpig View Post
    I realize this is a very old thread but I've recently done load development with Berger 190 Juggernauts and they have a G1BC of over .600. I shoot at a 1000 yard range with electronic targets. The sensors need the round to be well into supersonic speeds to register the shots. I was shooting 178g ELD Match bullets with varget loaded pretty hot at about 2780 muzzle velocity. When they reached the 1000 yard target they were moving at 1220 fps. The 190g Bergers with a 2615 Muzzle velocity were still moving at 1350 fps @ 1000 yards. This was a real eye opener moment for me about how much B.C. and weight affects velocity. I was really surprised by how much velocity the 190s retained!
    You should developed an accurate load with 190's you'd be good for 1K but I'd look at other bullets with better BC's for their weight (like the 208's you mentioned). I find 155 scenars to be very accurate to 1300yds at modest velocities (just under 2900fps). I'm not trying to discourage you from using heavier bullets that would no-doubt buck the wind better at 1000, but don't altogether disregard your 168gr load
    Martino1 likes this.

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