Settlement Population Size Limit

Hey all, I realise that there have been a plethora of threads on this topic, but I require definitive answers to the following:

• Is the base maximum population size limit 22 settlers (including using the You're SPECIAL! and Bobblehead glitch after reaching 10 Charisma)?
• If I transfer settlers using the temporary Charisma glitch (e.g. drinking booze to increase charisma and sending settlers from one settlement to the other) will the game eventually reset the population - or will the settlements in question suffer functionally for any reason?
• Are there hard-coded issues with reaching obscene settlement populations through the use of console/mods (e.g. 50 settlers, 100, 500)?