Leg of lamb is a pretty tender cut of meat closer to steak or ribeye in my experience. Recently I roasted a leg of lamb for maybe 2.5 hours until the core temp

Leg of lamb is a pretty tender cut of meat closer to steak or ribeye in my experience. Recently I roasted a leg of lamb for maybe 2.5 hours until the core temp was 135. It was a perfect medium rare in the thickest parts. I suspect you should target something like 2-6 hours. Kenji has a chart you can follow for cook times on Serious Eats. https://www.seriouseats.com/recipes/2016/10/sous-vide-leg-of-lamb-mint-cumin-black-mustard-recipe.html https://www.seriouseats.com/recipes/2016/10/sous-vide-leg-of...