In reply to Name Changed 34:
You could indeed, some people use a rubber mallet.
BUT there´ s more to bolting than just hammering the bolt in if you are putting up new routes especially on southern Euro limestone, there can be a lot of rock bashing and grubbing out cracks to remove vegetation, earth, loose rocks and stuff, prising off loose flakes etc. And you really need a metal hammer to sound test the placement and maybe flatten off the area where the bolt sits. The other end of the hammer is equally important unless you want to carry several. A good pick (and a longer than usual handle to save your knockles) is highly desirable, wooden handles don´´ t last very long either and keep coming loose if you bolt in hot climates and a decent weight makes things easier.
I use an vintage Forrest Mountaineering Mjollnir with a stainless plate welded on and a custom pick which is the best I´ ve come up with over the years. Something over 700g like a big-wall hammer rather than a lightweight Euro piton hammer is the way to go, the Omega Pacific wall hammer would probably be my choice if I had to buy one.