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Rifles, Reloading, Optics, Equipment
Reloading
decision on chronograph
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<blockquote data-quote="Damascus" data-source="post: 830637" data-attributes="member: 57878"><p>Yes, I agree with you, however I feel that developing a load not knowing it's speed is potentially dangerous, or at least could be hard on your rifle.</p><p>Some rifles shows pressure signs very early, others won't show any signs till they're on the brink of catastrophic failure.</p><p> </p><p>I once had a Winchester M70 Laredo (Winchester's version of Remington's Sendero) in .300 Win Mag. I started loading a long range whitetail load using 168 gr. Barnes T-TSX's and Retumbo... Very quickly found a load that I knew would/should be quite hot and it consistently printed .4 MOA groups.. I probably used this load for 2 seasons, firing probably 300 rounds of it, till" I chrono'ed it and found that it was shooting roughly <em>265</em> fps faster than all similar factory ammo - obviously overpressured, but showing no signs on fired cases. </p><p>On this flip side of this coin, I own 2 identical Remington 700 SPS's in .30-06, same barrel length/contour, etc... One of them can easily exceed Hornady's published max load (4350/165 SST) by almost 2 grains before I can find evidence like leaking primers (barely) and/or shiny case heads and flowed stamps... The other 700 - I can't even get to the max load before expanding pockets and case heads - as a matter of fact, it starts showing signs at 2 gr. over the starting load! </p><p>My point I suppose is that every chamber is different, either by dimensions or surface smoothness, tooling marks, etc., regardless of even being the same make and model - as the 700 SPS that shows signs early must have a much tighter chamber, or extremely excessive headspace, or a number of other possibilities... I've not taken them apart to compare to investigate the cause of this, since these are both "rainy day" rifles that I leave out at locations where they may be useful.</p><p> </p><p>I just think that a chronograph is as important reloading tool as the press or powder scale <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> Again, everyone's needs are different, and to someone just loading standard pressure, factory-dupe'd published loads that aren't going to be used for precision purposes has less of a need for a chrono than I do.. meaning that I'm one of those guys that has to do every single possible step - turning necks, sorting weight classes, uniforming pockets and deburring flash holes -- you get the idea, I'll not go on... All I can say is that I'm the guy most others hate to load with, since my friends can usually load 4 or 5 rounds to my 1 LOL... However, once the targets starts to get really small, all my perfectionist/OCD tendancies begin to pay off <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p></blockquote><p></p>
[QUOTE="Damascus, post: 830637, member: 57878"] Yes, I agree with you, however I feel that developing a load not knowing it's speed is potentially dangerous, or at least could be hard on your rifle. Some rifles shows pressure signs very early, others won't show any signs till they're on the brink of catastrophic failure. I once had a Winchester M70 Laredo (Winchester's version of Remington's Sendero) in .300 Win Mag. I started loading a long range whitetail load using 168 gr. Barnes T-TSX's and Retumbo... Very quickly found a load that I knew would/should be quite hot and it consistently printed .4 MOA groups.. I probably used this load for 2 seasons, firing probably 300 rounds of it, till" I chrono'ed it and found that it was shooting roughly [I]265[/I] fps faster than all similar factory ammo - obviously overpressured, but showing no signs on fired cases. On this flip side of this coin, I own 2 identical Remington 700 SPS's in .30-06, same barrel length/contour, etc... One of them can easily exceed Hornady's published max load (4350/165 SST) by almost 2 grains before I can find evidence like leaking primers (barely) and/or shiny case heads and flowed stamps... The other 700 - I can't even get to the max load before expanding pockets and case heads - as a matter of fact, it starts showing signs at 2 gr. over the starting load! My point I suppose is that every chamber is different, either by dimensions or surface smoothness, tooling marks, etc., regardless of even being the same make and model - as the 700 SPS that shows signs early must have a much tighter chamber, or extremely excessive headspace, or a number of other possibilities... I've not taken them apart to compare to investigate the cause of this, since these are both "rainy day" rifles that I leave out at locations where they may be useful. I just think that a chronograph is as important reloading tool as the press or powder scale :) Again, everyone's needs are different, and to someone just loading standard pressure, factory-dupe'd published loads that aren't going to be used for precision purposes has less of a need for a chrono than I do.. meaning that I'm one of those guys that has to do every single possible step - turning necks, sorting weight classes, uniforming pockets and deburring flash holes -- you get the idea, I'll not go on... All I can say is that I'm the guy most others hate to load with, since my friends can usually load 4 or 5 rounds to my 1 LOL... However, once the targets starts to get really small, all my perfectionist/OCD tendancies begin to pay off ;) [/QUOTE]
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decision on chronograph
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