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Old June 10, 2007, 07:37 PM   #1
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.243 Win handloaders, what to try first?

I only want to experiment with one bullet for the moment. I have 70gr Sierra BltzKings and 85gr HPBT Sierra GameKings. What do you suggest I should start with first. I have a Remington 700 BDL Varmint Special and intend to use it for woodchucks and target shooting. From what I have read IMR-4350 seems to be the #1 powder to start with, do you agree? I have IMR 4350, 4895, 4064, 4198, 4320, and 7828 on hand. Anyone have a load to recommend for one of the above bulllets with any of these powders? My new Winchester cases are re-sized, trimmed, tumbled, and primed just waiting for powder and a bullet. What should I try first?
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Old June 10, 2007, 07:52 PM   #2
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243 load

I use 46.5 grains of IMR 4350 under the 70 grain blitzking in my LSS BDL, be sure to seat bullet out to the rifling. Mine shoots very well. This load is a compressed load in Federal cases, and I have found will almost always shoot better than a non-compressed load IMO. You may also want to try the H380 powder. I have a 55 grain bullet compressed load that uses it and will go 4000 FPS.
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Old June 10, 2007, 09:02 PM   #3
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Right now I'm loading 37.0 of IMR 4895 over the 85 gr. Sierra BTHP with a RP lr primer. That is max. so work up. My son's M788 will shamrock them at 100 yds. I'm going to try 4320 in the near future, but he's pretty happy the way things are. Gets that from his mother I guess.
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Old June 16, 2007, 05:30 AM   #4
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I use 38 grs of 4064 behind the 85 gr HPBT in Federal brass with CCI 200 out of my Savage.
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Old June 16, 2007, 11:05 AM   #5
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85gr HPBT Sierra GameKings - if your rifle won't shoot these well, then your rifle just won't shoot.

I'm also in agreement with Dodge over the powder. IMR4064 is great. 37g's is my magic load, and it is relatively on the low side. I'd suggest starting around there and working up slowly.

My primers always show pressure signs with 4350 (CCI's) and even though the only sign, it makes me a bit nervous. But I think it is worth experimenting in your loads as well, it is kinda the classic .243 powder.
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Old June 16, 2007, 11:36 AM   #6
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I like Berger 68Gr. Match, pushed w/4350.
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Old June 16, 2007, 09:53 PM   #7
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700 Adl

My Rem. 700 ADL likes 4064-41.5 with 70 gr. matchkings. That load may work well with blitzkings if you play with the seating depth a little. They should be explosive on woodchucks!
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Old June 17, 2007, 06:34 AM   #8
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Thanks a-loy guys! This is exactly the info I was looking for. As soon as I get the .243 scoped and load up a few rounds I will post a report for you on how everything works out. Thanks again.
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Old June 19, 2007, 04:25 PM   #9
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I'm shooting 1/2in groups at 100yds w/ 100gr anything over 4831sc powder and mag primers.
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Old June 19, 2007, 04:53 PM   #10
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I've had exceptionally good luck with Nosler 55gr ballistic tips on the low end, and 95gr b tips in the mid-high range. Also good luck with Sierra 70grs. I don't have the exact load data on hand, but I know I had my best luck with IMR 3010.

I love the range of bullets/loads the .243 is capable of! Very underrated caliber, IMO.

-- Sam
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Old June 20, 2007, 01:29 PM   #11
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My best results were with Hornady 87 gr HPBT with H450 (no longer available). I haven't run out yet, but when I do I wil have to work up a new load.
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