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Primer pocket depth and uniforming |
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Roy Finn
MODERATOR Steiner Junkie Joined: April/05/2004 Location: United States Status: Offline Points: 4856 |
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Husky 06 with no special case prep. 5 shots @ 100 yrds
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8shots
Optics Jedi Knight Lord Of The Flies Joined: March/14/2007 Location: South Africa Status: Offline Points: 6253 |
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All this talk dirty will close down the reloading industry.
Every time I shoot a poor grouping I go out and buy the latest fad gadget! Like golf, a good grouping is a matter of how thick your wallet is! Can't hit the fairway? Well, you need the latest, hit-em-out-the-rough-a-mile-long driver!!!
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Gil P.
Optics Journeyman Joined: February/01/2012 Location: Henderson, NV Status: Offline Points: 316 |
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That some good shooting with that '06! Do your notes on the target paper say that it has a Hart barrel and McMillan stock?
I agree with Gulf's earlier post, shooting in different positions is also extremely important for the hunter. They dont have benches in the wilderness, unless your one of those hunters on television, then they do have benches, and someone to carry your rifle, and you are going to a private area where the animal is stocked... so doesnt that just make it shopping? |
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Easy come easy go
Always remember that you are absolutely unique. Just like everyone else. |
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8shots
Optics Jedi Knight Lord Of The Flies Joined: March/14/2007 Location: South Africa Status: Offline Points: 6253 |
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Shopping? Yes and no. On these stocked farms/ranches you can pretty much guarantee your game, providing it is WELL stocked. On sparsely stocked farms and or large farms it remains a big challenge. Animals remain wild, wily and evasive of man the hunter no matter in the "wilderness" or stocked farms.
In most countries the true wilderness is a thing of the past. Hunting in our day and age is somewhat different from when the wilderness was being tamed.
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Roy Finn
MODERATOR Steiner Junkie Joined: April/05/2004 Location: United States Status: Offline Points: 4856 |
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Yes, that Husky has a Hart 24 inch barrel and a McMillan MR profile stock.
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Gil P.
Optics Journeyman Joined: February/01/2012 Location: Henderson, NV Status: Offline Points: 316 |
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So there is no standard for the seating depth of primers just "below flush"?
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Easy come easy go
Always remember that you are absolutely unique. Just like everyone else. |
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Alan Robertson
Optics Master Joined: October/31/2009 Location: Oklahoma Status: Offline Points: 1763 |
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Yes and no... a correctly seated primer is seated squarely in the pocket and not only bottomed out, but bottomed with a little more pressure so that the priming compound is slightly stressed, or crushed between anvil and cup, for consistent ignition. The correct seating depth is typically achieved by "feel". Some benchrest shooters have been known to use coax presses with dial depth indicators and force gauges to achieve consistent depth, although many (most?) precision shooters just seat primers by feel, with hand tools. On another note, primer pocket uniforming should only be done once per case. Repeat use of the cutting tool only weakens the case and pocket cleaning after subsequent firing should be done with an appropriate tool. Unless cases are slightly out of spec, with primer pockets either too tight or not deep enough- causing primers to be above the level of the case head- pocket uniforming isn't really necessary and any effects of the uniforming would likely not be apparent except in 1/4 minute rifles fired at long distances, and any gained precision is questionable, even then. YMMV Read some of the books by the great shooters, like Warren Page, and they scarcely mention the topic as pertaining to accuracy. Most talk of primers and priming among precision shooters doesn't concern consistent seating, but focuses instead on using primers with sufficiently thick/hard cups to prevent piercing, which will produce flyers and in the case of semi- auto rifles, slam fires, with thin/high primers. This factor comes into play with cases using small rifle primers, as most LR primers are the same thickness. |
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"Garg'n uair dhuisgear"
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BeltFed
Optics Retard Joined: February/12/2008 Location: Ky Status: Offline Points: 22268 |
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I once read that primers were supposed to be .004", or was that .04" below flush. I have been loading some unfired Winchester brass using the Lee hand primer to prime the brass. With many of them, if I can get the primers to seat .001" below flush I'm happy. I will be using a primer pocket uniformer on this brass, as well as a flash hole trimmer on this group of brass, but only on this group of brass, after all of the cases have been fire formed.
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Life's concerns should be about the 120lb pack your trying to get to the top of the mountain, and not the rock in your boot.
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Gil P.
Optics Journeyman Joined: February/01/2012 Location: Henderson, NV Status: Offline Points: 316 |
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With a uniformed primer pocket (pocket hole depth is .129), im seating the primers down to .006 closing the hand primer all the way down. I have tried to do it by feel, but is just isnt very consistent as sometimes they will be seated lower than .006 (.004-.008 by feel) maybe its just bad technique. Am I crushing primers by seating them to .006? All im worried about is crushing primers, i'll sacrifice consistency if I am crushing them by seating to .006.
Alan, ill make note to only uniform once. Beltfed, it is very easy for me to seat the primers past .001 are you saying that it is difficult to do with your brass? Edited by Gil P. - September/07/2012 at 13:54 |
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Easy come easy go
Always remember that you are absolutely unique. Just like everyone else. |
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BeltFed
Optics Retard Joined: February/12/2008 Location: Ky Status: Offline Points: 22268 |
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Beltfed, it is very easy for me to seat the primers past .001 are you saying that it is difficult to do with your brass?
Yes, and this is one of the reasons I will be uniforming the primer pockets. I will only do it once.
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Life's concerns should be about the 120lb pack your trying to get to the top of the mountain, and not the rock in your boot.
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Alan Robertson
Optics Master Joined: October/31/2009 Location: Oklahoma Status: Offline Points: 1763 |
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I also have a K&M flash hole reamer, which reams the hole, deburrs and chamfers at the same time. Every now and then, there will be a case with a big chunk of punched- out brass which is too tough to remove (usually WW brass). I think that Lapua flash holes are drilled and not punched. http://www.6mmbr.com/catalog/item/1433308/900728.htm |
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"Garg'n uair dhuisgear"
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JohnnyD
Optics GrassHopper Joined: January/12/2016 Location: Sharon Hill,PA. Status: Offline Points: 1 |
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I Have deceided to go the extra steps in reloading by uniforming the primer pockets,flash holes,reaming and turning the necks on my reloads. I cannot find any info on the primer pocket depth. The tools all say they are set to the correct depth. The tools also have a set screw to adjust the depth incase they need adjusting but do not tell you the sammi spec depth. Thanks for any info to get me going in the right direction. JohnnyD
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JohnnyD
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