Some of the previous responses had to do with long term stability of ammunition and the compressed springs. It seems kinda unlikely that what was asked.
The question seemed to do with shooter confidence. If you're cool with annual, semi-annual, or semi-weekly re-aquaintence with your skills, and equipment, go with what fits into your comfort/complacency level.
As ammunition expense relates to cost, at least for the time being, we can afford 21 rds a month. Fotunately, we both like Beans, Greens, and Cornbread.
There doesn't seem to be a std answer.
Bread and Circuses don't pay the Bills.