malkiserow Posted November 1, 2008 Report Share Posted November 1, 2008 Does anyone know what pressure double PSF is ? The PSF is in a star as normal but the marks show a pair of them ...... I guess this might be magnum but not sure. Quote Link to comment Share on other sites More sharing options...
HW682 Posted November 1, 2008 Report Share Posted November 1, 2008 does this help? https://store.bluebookinc.com/Info/PDF/Fire.../Proofmarks.pdf HW682 Quote Link to comment Share on other sites More sharing options...
malkiserow Posted November 1, 2008 Author Report Share Posted November 1, 2008 does this help? https://store.bluebookinc.com/Info/PDF/Fire.../Proofmarks.pdf HW682 Thanks for this, I had looked at it but it does not show the meaning of the Double PSF Quote Link to comment Share on other sites More sharing options...
HW682 Posted November 1, 2008 Report Share Posted November 1, 2008 Ok, see what you are saying. Is is a Beretta or other gun sold by GMK? I emailed them to check details of my gun and got a reply next day. HW682 Quote Link to comment Share on other sites More sharing options...
Graham M Posted November 1, 2008 Report Share Posted November 1, 2008 (edited) ............................ Edited November 2, 2008 by Graham M Quote Link to comment Share on other sites More sharing options...
sandy22 Posted November 2, 2008 Report Share Posted November 2, 2008 According to my book on proof marks PSF with two stars is the mark for the obligatory proof (17,637 psi) for shotguns with chambers longer than 70mm (2 3/4"). Guns with shorter chambers may be submitted voluntarily for this proof. I suspect your marks have the same meaning as this. Quote Link to comment Share on other sites More sharing options...
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