P.E. Kelley Posted December 15, 2015 Share Posted December 15, 2015 (edited) I have no info that suggests that Underwood or Buffalo or any of the smaller purveyors do use or have a Ballistic Lab, but I know that Federal, Hornady, Winchester, Remington do. Edited December 15, 2015 by P.E. Kelley Link to comment Share on other sites More sharing options...
Intercooler2 Posted December 15, 2015 Author Share Posted December 15, 2015 In that first link you will find information about what Federal caps their +P+ rounds at. I think it was 42k PSI. Link to comment Share on other sites More sharing options...
P.E. Kelley Posted December 15, 2015 Share Posted December 15, 2015 In that first link you will find information about what Federal caps their +P+ rounds at. I think it was 42k PSI. Cool (can't open the link from this terminal) but what PSI is Underwood's is the question. Link to comment Share on other sites More sharing options...
Intercooler2 Posted December 15, 2015 Author Share Posted December 15, 2015 9x19 SAAMI - 35,000 PSIA CIP - 34,083 PSIA NATO - 36,550 PSIA SAAMI +P - 38,500 PSIA There is no industry standard for +P+, though Winchester and Federal do state that they use 42,000 PSIA as a limit. CIP and NATO PROOF loads hover around 46,000 PSIA. The Glock 17 and 19, along with a bunch of other 9x19 pistols, will safely shoot +P+ loads, but with increased wear. Link to comment Share on other sites More sharing options...
Intercooler2 Posted December 15, 2015 Author Share Posted December 15, 2015 I don't know what Underwood is. The BPLE should according to this be no more than 42k PSI given Federal's cap on pressure. That's where I would like to go and stop. If I could find Underwood data that would help determine where it sits. Link to comment Share on other sites More sharing options...
P.E. Kelley Posted December 15, 2015 Share Posted December 15, 2015 I guess where I am going with this is...If a company does not use a Ballistics lab...they can not KNOW their ammo is within a given pressure. Link to comment Share on other sites More sharing options...
Intercooler2 Posted December 15, 2015 Author Share Posted December 15, 2015 That's true, but if they are listed SAAMI (Doubletap is), their ammo as I know it is within the guidelines. Link to comment Share on other sites More sharing options...
Intercooler2 Posted December 15, 2015 Author Share Posted December 15, 2015 Interestingly S&W M&P's don't seem to be either: Plus-P” (+P) ammunition generates pressures in excess of thepressures associated with standard ammunition. Such pressuresmay affect the wear characteristics or exceed the margin of safety.Use of “Plus-P” ammunition may result in the need for morefrequent service.“Plus-P-Plus” (+P+) ammunition must not be used in Smith &Wesson firearms. This marking on the ammunition designates thatit exceeds established industry standards, but the designationdoes not represent defined pressure limits and therefore suchammunition may vary significantly as to the pressures generatedand could be DANGEROUS. Link to comment Share on other sites More sharing options...
Intercooler2 Posted December 22, 2015 Author Share Posted December 22, 2015 I pick up the Grand Power K100 9mm today...finally! Due to rain I won't be able to do any shooting until Christmas Eve or Day. I plan on breaking it down tonight for a cleaning and to get some pictures of case support with a round inserted vs a Witness and Springfield barrel. Link to comment Share on other sites More sharing options...
Intercooler2 Posted December 23, 2015 Author Share Posted December 23, 2015 I posted some pictures and measurements I took tonight. https://www.facebook.com/EAA-Firearms-Not-affiliated-with-EAA-Corp-206257602745613/ Link to comment Share on other sites More sharing options...
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