The answer is not that simple. Different guns like different ammunition. The best bet is to get as wide a sampling of .308 (different manufacturers and wts.) that you can afford and spend the day at the range. Shoot off of sandbags and compare the groups. Go with the ammo that gives you the smallest set of groups. The worst thing that happens is you spend the day relieving a little stress. .
Impossible to answer as asked. Rifle, pistol, shotgun? What does accurate mean to you?
.20 grams
Final Match Pistol Pellets by H&N
You will have to define what "large caliber" means to you and weather the pistol is a revolver, singleshot, blackpowder, rifmfire, centerfire, pinfire, semi-automatic.
if u mean .43 gram yes you can, but for a pistol you don't need that heavy a round at most you would need a .30g bb.
To round to the nearest whole number, round down to 60. To round to the nearest hundred, round up to 100.
Too broad to answer. At what range? Rifle, rimfire, pistol, revolver? In general, a heavy barreled target rifle (most are custom builds) in one of the 6mm target calibers would be the most accurate to about 600 yards, but other rifles such as the .338 Lapua will be more accurate at 1500 yards.
Encore
The most common Greman pistol was the Luger po8 pistol
Lakeside Razorback belt-fed .22 long rifle pistol, 200 round capacity belts.
For most pistols, it can damage the firing pin. This is not true for all pistols. Recommend buying a "cap" cartridge that is a dummy round that can be fed and dry-fired in an automatic pistol without causing damage.
Gun shop or gun show. Most CHEAP .22s are neither reliable, durable, nor accurate. You get what you pay for. A Ruger Mark III sells for about $250, but will last 50 years, works reliably, and is more accurate than most shooters.