I have always used a lever action grease gun, until this season. My lever unit seemed so messy to get new cartridges installed, I decided to try a different grease gun. I bought a Lincoln pistol grip and I really like it, changing cartridges is much cleaner than my old one. However, I believe the amount of grease per shot may be less for the pistol grip than for the lever gun. I have done a bit of experimenting, and also by looking on grease points, I think the volume of grease is less with the pistrol. If I had to put an objective measure, I would say the pistol delivers about 70% as much grease put action than the lever. Anybody have any experiences or assessments on this matter?