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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
30 Nosler vs 300WM vs 300PRC
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<blockquote data-quote="MallardAddict" data-source="post: 2369385" data-attributes="member: 3830"><p>Due to being saami cartridges the PRC and Nosler both had actual pressure test data completed prior to being saami approved or publishing of load data. </p><p></p><p>Most loads you will see posted in online forums for the PRC or Nosler are rarely more then a few grains above book max if that which is likely well within the variation from barrel to barrel and differnt throats etc so shooters working up loads have a scientifically proven safe base to work from</p><p></p><p>With the Sherman rounds there has been no pressure testing completed so it's honestly anyones guess as to what pressures are being created or if they are in all actuality safe loads that are being repeatedly posted online. More then once Sherman loads that have been posted here have been shown to be pushing 70k + via QL which is the next best estimator in the absence of a pressure trace.</p><p></p><p>It's well established that ADG and Lapua brass hide pressures well so the classic brass indications may in fact not be good indicators of a safe working pressure.</p><p></p><p>That's my .02, like I've repeatedly said I like a lot of things about the Sherman rounds but I am leery of the pressures being created with some of these loads that get posted as "safe data" and creating essentially an online loading manual here despite no one knowing the actual pressures being created.</p></blockquote><p></p>
[QUOTE="MallardAddict, post: 2369385, member: 3830"] Due to being saami cartridges the PRC and Nosler both had actual pressure test data completed prior to being saami approved or publishing of load data. Most loads you will see posted in online forums for the PRC or Nosler are rarely more then a few grains above book max if that which is likely well within the variation from barrel to barrel and differnt throats etc so shooters working up loads have a scientifically proven safe base to work from With the Sherman rounds there has been no pressure testing completed so it’s honestly anyones guess as to what pressures are being created or if they are in all actuality safe loads that are being repeatedly posted online. More then once Sherman loads that have been posted here have been shown to be pushing 70k + via QL which is the next best estimator in the absence of a pressure trace. It’s well established that ADG and Lapua brass hide pressures well so the classic brass indications may in fact not be good indicators of a safe working pressure. That’s my .02, like I’ve repeatedly said I like a lot of things about the Sherman rounds but I am leery of the pressures being created with some of these loads that get posted as “safe data” and creating essentially an online loading manual here despite no one knowing the actual pressures being created. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
30 Nosler vs 300WM vs 300PRC
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