This bullet has been a long time favourite of mine for the .45ACP for the last 30 years. I was a bit disappointed when I could not get that bullet to function through my Ruger American .45.
I settled on using a different bullet, and about the time I thought I had all of my feeding issues fixed, it jammed up on me again, at that point I thought enough was enough and the Ruger went "down the road". I replaced it with a Remington RP45, right out of the box I could shoot it better than the American, the 15+1 seems more in line with a high capacity .45 and it flawlessly feeds the H&G 68.
I use the Lyman data for the 452630 bullet, closest to H&G68, the manual lists 913 fps with 7.5 gr. of Unique. With the H&G bullet over 7.5 gr, of Unique my average velocity out of the Remington is 1000fps, a good trail load.
The RP series Remingtons have gotten some bad "press", but this one work very well for me..