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Old March 28, 2011, 09:25 AM   #1
smoker39
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Rem. 7400 reloading question

I have a new to me 7400 in 280. I would like to contact someone who owns and relaods for this caliber. Thanks, smoker39
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Old March 28, 2011, 03:12 PM   #2
crowbeaner
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Stick with MEDIUM burn rate powders. Don't try to hotrod your ammo.
150 grain Speer, RP brass, CCI 200, 48.0 of H414/WW 760. Perfect.
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Old March 28, 2011, 06:12 PM   #3
stu925
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I've had good luck with IMR 4350, but my .280 likes heavy bullets (168gr HPBT Matchkings). Mine was built as a bench rest rifle though where I'm sure you'll be hunting with yours so I'm sure my loads will be quite a bit different than yours. Try the 4350 though, done wonders for me.

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Old March 28, 2011, 06:32 PM   #4
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The 7400 remington will thrive on any load you could use in a bolt gun. It will come close to the 7mm rem mag in velocity, 3000 fps with a 140.

You do NOT need to load it soft. It is NOT a m-1 garand with it's easily bent op-rod.

Some will say you need small base dies in order to load for it. I loaded for a .280 in a 7400 without using small base dies, and at full power levels. Mostly using XMR-AA 4350. Any mid-range burn rate powder will be fine.
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Old March 28, 2011, 06:52 PM   #5
William T. Watts
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Remington factory loaded ammunition for the 280 round is loaded down for the Remington auto, I agree with crowbeaner mid range loadings is sufficient to take anything up to and including Elk. I happen to own one and am quiet happy with the round but I use H4831 powder for all bullet weights. Any powder that works well in a 270Win will work well in a 280Rem!! William
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Old March 28, 2011, 06:58 PM   #6
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Wisner's has a very interesting article on the series of these rifles, and hidden in the middle, advice on how to reload for the thing.

http://www.wisnersinc.com/additional...7407427400.htm

Wisner recommends small base dies.
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Old March 29, 2011, 08:26 AM   #7
smoker39
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Thank you all for your advice and suggestions. I have a pretty good collection of IMR powders and will try to work a load for a 140 grain bullet. My first surprise was the short throat on this rifle. Sierra shows a 3.330 OAL for this 140 gr. bullet. Long story short it ended up being 3.265 and will be a least .010 shorter when I back it off some. Can any of you folks verify this as being normal? Thanks again, smoker39
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Old March 29, 2011, 01:24 PM   #8
William T. Watts
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With another bullet with a longer/slimmer ogive you probable could lengthen your OAL length a bit. You never mentioned which or whose 140gr bullet you want to use, my experience with Hornady projectiles I've had to shorten my OAL. My OAL for my 280Rem is 3.290 (Nosler 150gr), my 270Win on the other hand has a long throat and will handle the full 3.340" (again a Nosler 150gr projectile), different rifles, different caliber, different throat, both calibers use 3.340" as a maximum length for a loaded round. William

Last edited by William T. Watts; March 29, 2011 at 05:59 PM.
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Old March 29, 2011, 01:40 PM   #9
smoker39
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Hello William, I'm using a Sierra 140 grain Game King. I'm surely hoping there is nothing wrong with the throat. Phil
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Old March 29, 2011, 03:02 PM   #10
William T. Watts
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I think of a short throat as a positive, if you keep the rifle long enough the throat will erode, just depends on how many rounds you shoot thru it and how fast you do it. If I were you I wouldn't worry about your short throated chamber! William
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Old March 29, 2011, 03:05 PM   #11
smoker39
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Thank you.
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Old April 1, 2011, 09:57 AM   #12
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Snuffy, reading through the posts on reloading the 280 I see a mention of 'small base' dies. I see you didn't believe it was necessary. Does the auto feature sometimes cause problems with casings being over sized? smoker39
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