Recently picked up some 9mm bullets from Sierra and after seeing numerous variations in load data for them from variety of sources, decided to go straight to the source, so picked up a Sierrra Load Manual, sixth edition to see what they had to say about it.
Quickly discovered Sierra's manual has load data not found from any of my other sources. Load data like 6mm Rem Ackley Improved. Try finding that elsewhere.
But it also has a set of load data for 9mm +P for higher pressure loads for military rounds, service pistols, etc. The only place I've ever seen it. It appears that Sig and other also make factory ammo for +P designated guns, all coming with warning that pistol must be rated for such.
So first question is..........how does one know if your pistol is rated for +P ammo? Nothing in the owners manual or online sources say one way or the other.
Second question.......if pistol is rated for +P ammo, then it would appear to be safe to load to MAX loads in all the published load data intended for pistols that are not rated +P? In Sierra's load data, same everything for two otherwise identical loads has +P running about half a grain more than max loads not for +P.
Not seeking to blow anyone or anything up, just seeking clarification.
Quickly discovered Sierra's manual has load data not found from any of my other sources. Load data like 6mm Rem Ackley Improved. Try finding that elsewhere.
But it also has a set of load data for 9mm +P for higher pressure loads for military rounds, service pistols, etc. The only place I've ever seen it. It appears that Sig and other also make factory ammo for +P designated guns, all coming with warning that pistol must be rated for such.
So first question is..........how does one know if your pistol is rated for +P ammo? Nothing in the owners manual or online sources say one way or the other.
Second question.......if pistol is rated for +P ammo, then it would appear to be safe to load to MAX loads in all the published load data intended for pistols that are not rated +P? In Sierra's load data, same everything for two otherwise identical loads has +P running about half a grain more than max loads not for +P.
Not seeking to blow anyone or anything up, just seeking clarification.