It shouldn't matter that much. I've seen gel tests that compare a G30 and a 5" 1911. The only difference is that the JHP shot out of a longer barrel expands slightly more.
Here is a guy who tested loads out of a Springfield XDs (even shorter barrel). http://mousegunaddict.blogspot.com/2...o-testing.html
Looks like the ammo performed well.
Also, tnoutdoors9 tested 230gr GoldDots out of a G30 and a 5" 1911. One test used newspaper in jugs and the other was gel, so that might make slight differences. Anyways... the 1911 bullet expanded slightly more than the G30 bullet.