standard 115 grain 9 mm ammo or higher grain bullet.
115 and 124 among others
You may use any 9mm Parabellum (9mm Luger) cartridge that is standard or +P, including 124 grain ammo. Recoil may be higher than with 115 grain ammo. Do NOT use a +P+ cartridge.
Its the weight of the ammunition
9mm Luger 115 grain ball for target shooting. JHP (jacketed hollow point) for self/home defence. If you can find itthe XTP bullet performs well in testing. Fiocchi 115 grain XTPHP is good if you can find it.
Assuming you mean bullet grains, which is how most preloaded ammo is categorized, the answer is going to depend on what you intend to use it for. Generally, the 124 grain JHPs are a good all around choice. The 115 gr bullets are OK for hunting small animals or just plinking.
The 147 and 124 grain are bullet weights. The 124 grain bullet loaded to higher pressures (+P) will have a higher velocity than the standard load with a heavier 147 bullet. As far as penetration goes, I have seen tests where the 147 grain out performed the 115 grain +P but the 124 grain +P should be a good all around round.
This means the weight of the bullet itself. A common misunderstanding is that the higher the grain the better. Which is not true. A larger grain is slower than a smaller grain. Find which grain of bullet shoots the most accurate out of your gun. There are 7,000 grains to a pound.
Possibly the Winchester 110 grain Silvertip. The 125 grain Silvertip is a +P load, the 110 is not.
30/06, 150 grain
230 grain round nosed FMJ.
With civiian ammo, it is the caliber. Military ammo- year made, and where