9mm 124 grain FMJ loads with Unique

[Sieger]

Originally Posted by TheRomanhistorian

I only made 4 rounds to test at 5.0 grains with 124 grain Hornady FMJ bullets. They worked well and they actually functioned the hold-open of my chromed 1918 all-matching P-08. They fit in the magazine, chambered fine, fired well, worked the action, and the toggle stayed locked upon after the last one. I might keep tinkering with the load but I was quite pleased. I had heard Unique was dirty but wow... Still, now it has a use!

Accuracy was hard to gauge given only 4 rounds and my not having been to the range in 2 and half months but the grouping was okay enough.

Hi,

If 5.0 worked well, I'd drop down to about 4.6 and test until the load just worked the hold open, as often, light loads are more accurate in a Luger.

Meanwhile, if you can load a full magazine of 8 and fire them all without a malfunction at 5.0, you know you are in the right range.

5.0 certainly is not a hot load of Unique in a 9mm.

For me, I enjoy shooting a Luger for accuracy. Before you can achieve that, however, you must eliminate malfunctions.

Sieger