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Author Topic: Fun with a .243  (Read 1686 times)

Fenris

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Fun with a .243
« on: September 06, 2010, 08:18:08 pm »
I am toying with handloads for an AR10 in .243.  I want a good, explosive projectile that i can still get good accuracy with.  I am currently shooting my way through a mess of Hornaday 58 grain v-max.  Next up are Nosler 55 grain bullets.  I am also looking really hard at Barnes 62 grain V.G.s  I was seriously underwhelmed by the 22 cal V.G.s But I had a very hard time finding data for the 36 grain bullets with any powder that I was familiar with.  Can I goose the load enough in the .243 to get truly tremendous performance out of an AR? 
UtahThought I had a nickel’s worth of wisdom. Turns out I’m a buck and a half short.

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    RandySBreth

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    Re: Fun with a .243
    « Reply #1 on: September 09, 2010, 09:15:47 pm »
    How long is the barrel? That will be the deciding factor, especially with lightweight bullets. I've shot plenty of the .243 55-grain Noslers out of 26- and 22-inch barrels, but I don't know what you'd get out of something shorter.
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    Fenris

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    Re: Fun with a .243
    « Reply #2 on: September 13, 2010, 10:36:13 am »
    It's a 20" barrel with a 1in 10 twist.
    UtahThought I had a nickel’s worth of wisdom. Turns out I’m a buck and a half short.

    RandySBreth

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    Re: Fun with a .243
    « Reply #3 on: September 13, 2010, 10:21:56 pm »
    I shot plenty of the lighter "screamers" in my .243's but eventually realized it was easier to get bullets in the 70- to 87-grain range to shoot tiny groups, and the added weight outperforms the .22 centerfires on everything from 'chucks to coyotes. In a 20-inch barrel you most likely won't get the same velocity you see in load data as most test barrels are 26" for some reason. But the velocity loss is less for those midweight bullets.

    If you are just looking for "blow them up" performance for prairie dogs I had the best luck with those .243 55-grain Nosler Ballistic Tips and 50-grains of Hodgdon H380 set of with a CCI BR2 (Large Rifle Match) Primer. If I remember right this load was 1 grain under max, but shot 3/4" (three shot) groups in the Winchester Model 70 Featherweight. I only chronographed that load for one group (borrowed chrony at the time) and got right around 3900 fps out of the 22-inch barrel. Performance on Crows or Woodchucks is devastating.
    For very long range I still prefer the heavier bullets, but for under 200-yards the 55 grainers are amazing. It seems like they arrive "on target" at the same millisecond the trigger breaks!
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