I think the bulk of the 40mm grenades is also an issue. At present, it's too high.
In RL, the '203 (and M79 for that matter) aren't just used for killing stuff, they can be used for launching smoke (coloured, CS Gas, all sorts) flares, and smoke flares for signalling, lighting an area, providing cover, or flushing out the enemy.
I think the damage that an unexploded 40mm grenade does should be lowered to about 1, since its really nothing more than a 4cm wide punch in the head. A big punch in the head, but nothing compared to hot lead.
Limiting 40mm grenades to 2 is unrealistic, and I'me s<u></u>hitty that Inf and O:FP have both limited grenades to some stupidly small number.
Designated grenadiers are just that, designated. The GL is their weapon, would you only take 2 rounds for your M16 if you were a rifleman? I'm sure its a different case with the M16/M203 combo, since you have a rifle, but for weapons like the HK Granatpistole or M79, where you can't carry a rifle at the ready, whilst also carrying a GL ready, you really need to be fast on the reloads, and have plenty of ammo ready.
Does anyone remember the picture that someone posted, of the two marines getting their gear together, an entire table was covered in 40mm grenades, and each of them already had at least 5.
If you can't do it properly, it isn't worth doing.