It's pretty easy, especially handy during the "shortages" that keep reoccurring every few years now. The .35 Remington is one of the rounds the major manufacturers make "seasonally," meaning whenever they get around to it.
FYI - I got a notification email from MidwayUSA yesterday that they had some Hornady LEVERevolution .35 Remington in stock. It’s been a bit hard to find for the last few years:
