To touch on a point not addressed yet, in my experience sometimes the difference of being able to make an uphill shot work or not can be as subtle as a little difference in the terrain. I was shooting down at Alabama Precision last year, and they had some prairie dogs ran up a hillside. You had a rather broad shooting area to choose from, and for the shooters that didn’t read the ground ahead of time, they had to re situate themselves for the highest ones.
This can be as subtle as looking for divots and lumps in the ground. Find a lump for your bipod, and a divot for your buttstock, and sometimes that’s the extra gain that’s needed. If you’re not paying attention and end up with your bipod in a divot, and your buttstock on a lump, then you’re fighting extra hard from the get go.