I hadn't taken into consideration the taper of the loading window. Though the length works the nose was too wide to fit. I had to modify my Ruger as I had my Remington, but I've yet to get to the range.
I hated to modify my Ruger, but I also hated to have a $200 mold that I couldn't use. Since my job on my Remington looked fairly good for an amateur I decided to try it on my Ruger, and if I didn't do so hot then I could take it to a smith to fix.