Grenadier (Roland)

Killing an enemy increases grenade damage and causes grenade regeneration for a few seconds.

Effects
Additional levels may be acquired through the use of Class Mods

The following statements are based heavily on educated guessing:

The GRpM seems to be equvalent to [ 1.5 * (Skill Level) ], rounded up. Given Borderlands' apparent preference for trying to keep percentages and statistics obscured in favor of "Easy-View Numbers", extrapolating that the 'true' GRpm really is [ 1.5 * (Skill Level) ] would not be too farfetched. Going a bit further, it is possible that the actual rate of regeneration is one grenade every { 60 / [1.5 * (Skill Level) ] } seconds, which would make the left table (where 1 grenade is regenerated every X seconds) approximately correct. If, however, you really *do* regenerate the 'listed' number of grenades per minute, the right table more likely to be correct. The long and the short of the matter is that above a skill level of 6, you'll only see marginal increases in regeneration rate. If you're going for 6+ points in Grenadier, do it for the damage buff, not the GRpM increase.