I use one on my weatherby backcountry with the Howa action and in my research they are the stoutest mount available made specifically for our action. Love mine it's real stout compared to the talley rings they replaced. I am sure there are stronger mounts (I prefer tps) but they don't make them specifically for the Howa action although I hear that a Remington 700 long action will work on the howa long actions.
I have one of their 1 piece 20 MOA mounts on a Remington 700 .300 Win Mag and it has performed very well for me. I think they are a good combination of light-weight and strength, especially for the price.