Roper, dragging the guns out, taking pictures, scanning targets is a lot of work. Anyone that has ever been to a benchrest match knows what small groups look like, taking pictures would just be more of the same. Besides, nothing frustrates me off more than some idiot that carries a group around in his wallet.
If you really enjoy shooting a lot, weather it be a sporter, factory varmint, or full blown benchrest rig, a muzzle break makes your shooting MUCh more enjoyable. A 40%-60% decrease in recoil allows you to shoot much more accurate. If you are shooting a benchrest rig with a 3" forearm with the forearm "pinched" by the rest's ears, your gun may not move more than 1" on the bags, which alone will give you better accuracy.
I have played around with many types of muzzle breaks. Gunsmith's all seem to have their favorite break. I have found several that are especially effective in reducing recoil. The Vias break, the Answer Break made by Williams Gun Sight are two of the best. I use a few of the Shrewd muzzle breaks distributed by Brownell's that are great on sporters in 7 Mag, etc.
I have shot rifles with the Harrel muzzle break that were great and several others that I can not remember the name of.
My favorite break is a large one that has 3 expansion chambers in it along with 132 holes of 2 different sizes, it bleads off a lot of recoil. The additional weight on the end of the barrel seems to dampen vibration on every gun that I have shot them on without exception.
Yesterday, I worked up loads for a Heavy Varmint rig that was a custom 6 BR with an muzzle break on it, it sure was a joy to shoot because the recoil was like a 17 Mach 4 and accuracy was simply unreal.