Echoing some of what David already said...

Much of this is an educated guess and everyone is different.

In regards to the ratios changing

Dietary protein demands to maintain lean mass will decrease as total calories increase.

So protein goes down (18% of calories) as calories go up in the gaining scenario you present above.

Grams of fat and carbs go up in the gaining scenario as the total calories are increased and the extra calories have to come from somewhere.

When calories are at or below maintenance protein demands will increase...

  So in the maintenance scenario grams of protein are increased (22% of calories) while grams of carbs and fat are decreased as the caloric intake needs to be reduced and the deficit has to come from someplace.

You did not mention you weight or age...and if you did I missed it.

But this amount of protein seems a bit low as a percentage of total caloric intake.

You are spot on in looking to gain quality weight. As stated above educated guess and individual...

• Log what you eat and take great notes.
• Measure progress on the scale.
• Measure your flexed bicep.
• Watch how denim/blue jeans fit out of the dryer.

Putting the info above to work for you to gain mostly lean mass.

If the scale is going up and your jeans fit out of the dryer you are gaining mostly lean mass. It is working. Consider bumping calories a bit higher.

If the scale goes up and the jeans are getting tighter you are gaining fat and lean mass. Consider dropping calories a bit.

When it comes time to lean out... if the scale is dropping the flexed bicep is remaining unchanged and the denim fit great you will be losing mostly fat mass and retaining lean mass.

Good luck!

Echoing some of what David already said, much of this is an educated guess and everyone is different.

In regards to the ratios changing, dietary protein demands to maintain lean mass will decrease as total calories increase. So protein goes down (18% of calories) as calories go up in the gaining scenario you present above.

Grams of fat and carbs go up in the gaining scenario as the total calories are increased and the extra calories have to come from somewhere. When calories are at or below maintenance protein demands will increase... So in the maintenance scenario grams of protein are increased (22% of calories) while grams of carbs and fat are decreased as the caloric intake needs to be reduced and the deficit has to come from someplace.

You did not mention you weight or age (or if you did I missed it). However, this amount of protein seems a bit low as a percentage of total caloric intake. You are spot on in looking to gain quality weight. As stated above though, this is largely just educated guesses and based on the individual.

• Log what you eat and take great notes.
• Measure progress on the scale.
• Measure your flexed bicep.
• Watch how denim/blue jeans fit out of the dryer.

Putting the info above to work for you to gain mostly lean mass.

If the scale is going up and your jeans fit out of the dryer you are gaining mostly lean mass. It is working. Consider bumping calories a bit higher. If the scale goes up and the jeans are getting tighter you are gaining fat and lean mass. Consider dropping calories a bit.

When it comes time to lean out... if the scale is dropping the flexed bicep is remaining unchanged and the denim fit great you will be losing mostly fat mass and retaining lean mass.

Good luck!