My favorite 7-1/4" ones are the mirror image Porter Cable 347 and 743. I use either depending on the application. Right blade, and left blade of the...
Type N will be plenty strong enough for that wall. Even with mortar, it should be laid so that any stone would stay in place if no mortar was there....
I've built a number of new stone fireplaces in houses I've sold mainly because we have an abandoned Granite quarry on our land. Since working on old...
If I was going to buy one right now, I'd get the 390. I don't like the gun that comes with the X17, so I'd have to figure in getting the better gun....