I found this Winchester “150 Round Value Pack” of 9mm NATO 124 gr ammo for sale at my local Gander Mountain for $49.99 recently. That works out to about $16.66 per 50, which is not bad for reloadable brass cased 9mm in the current market.
That is, until you read the (very) fine print on the bottom of the box that says, “These cartridges are loaded to military velocity and pressure; average pressure is 10% to 15% higher than industry standard pressure for 9mm Luger.”
This is obviously part of some military contract overrun packaged in bulk as cheap plinking ammo. The problem is the “10% to 15%” higher pressure puts this square in the 9mm +P category.
Notice that it is only 15% that sets the difference between normal loads and +P . If you are a reloader, it is imperative that you have a precise scales and that whatever powder thrower you are using dispenses the chosen amount every time. Check your reloading manuals and pay attention on the increase of pressure that results from Starting Load to Maximum Load and compare it to the actual percentage of grains increased. With Hodgdon CFE Pistol, a 10% increase on weight (0.5 grains) results in almost 25% more pressure.
A Kaboom is not a nice reminder you screwed up.