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I am planning on loading Sierra's 175 sbt's in a 7 mag with 4831sc. Are Mag primers necessary or will LR primers do the trick? What is the Difference? Mark | ||
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You don’t have to use magnum primers to work up your load. Try LR primers if you want, find out if they give the performance you’re looking for. I would use magnum primers for a 7mm Mag. Because of the volume of the case, charge weight, and the goal of lighting off as many powder granules simultaneously as possible, The LR primers may be a little lite as far as ignition goes. But that’s just my opinion. | |||
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Which "LR" and which "magnum" primers? Some "LR" (the WW WLR for example) are stronger than some "magnum" primers. The Federal 215 is about the strongest of primers, whereas the Federal 210 is one of the mildest. But the bottom line is that 4831 isn't terribly difficult to ignite, and the 7mm Rem isn't too large a case for most, if not all, standard "LR" primers. Use whatever you have on hand and it will be unlikely that you can tell the difference in any of them. The biggest difference in the "LR" and the "magnum" primers is the label, followed by the price. | |||
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Interesting post. Thanks for clearing up the confusion over primers. | |||
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There are quite a few primer "tests" around and I'm not saying this one is any better (or worse) than the rest but it will certainly give you a guide to work by. Use your chrono if you have one.....primer test xxxxxxxxxx When considering US based operations of guides/outfitters, check and see if they are NRA members. If not, why support someone who doesn't support us? Consider spending your money elsewhere. NEVER, EVER book a hunt with BLAIR WORLDWIDE HUNTING or JEFF BLAIR. I have come to understand that in hunting, the goal is not the goal but the process. | |||
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I strictly use Large Rifle primers in my rifles, whether they are a magnum or not.. or whether a mag primer is recommended or not... I do so because I found better consistent accuracy... Life Member: The American Vast Right Wing Conspiracy Jan 20, 2009.. Prisoner in Dumocrat 'Occupied America', Partisan in the 'Save America' Underground Beavis..... James Beavis..... Of Her Majesty's Secret Service..... Spell Check Division "Posterity — you will never know how much it has cost my generation to preserve your freedom. I hope you will make good use of it." John Quincy Adams A reporter did a human-interest piece on the Texas Rangers. The reporter recognized the Colt Model 1911 the Ranger was carrying and asked him "Why do you carry a 45?" The Ranger responded, "Because they don't make a 46." Duhboy....Nuttier than Squirrel Poop... | |||
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I've never used anything but large rifle primers in my 7mm Rem. Mag. Since accuracy has been excellent, I've never felt the need to try magnum primers in it. The primer used can improve, worsen or cause no change in accuracy. Interestingly, a 357 Herrett I have had a definite preference for CCI 250 large rifle magnum primers. Theoretically that shouldn't be since a 357 Herrett cartridge is smaller volume wise than a 30-30 Win. | |||
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One thing you might consider is that when the temperature is really really cold, a magnum primer might do a better job of firing up the powder while a LR may not. With that thought in mind, note that Gurmulkin said, if it works for you and your happy with it, stick with it! RobertD RobertD I prefer my fish raw, my meat extra rare, and P.E.T.A on the BBQ. Any questions? (Pork Enhanced Through Alcohol) Endowment Life Member NRA, Life Member CRPA SCI Golden Gate Chapter www.woodpeckings.com | |||
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I have been focusing lately on getting loads to shoot the same if its 70 degrees or 25, I have been trying magnum primers alot lately in hopes of the hotter flame setting off the power the same hot or cold, or at least more uniform in times when one needs a rifle, he tends to need it very badly.....PHC | |||
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See Saeed's (our host's) tests of primers. http://www.accuratereloading.com/primer.html "How's that whole 'hopey-changey' thing working out for ya?" | |||
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