Level of profit - realistic?

so i was doing some sums and came up with the following:



if every month i purchase a total of 30k worth of shares and make a 10% profit on average, then after 10 months i stand to double my $30k.



is 10% every month realistically achievable? 10% isnt a huge amount but in shares it can be... could just as easily lose 10%. to aim for the 10% profit target every month, from my experiences so far, this is going to require time and dedication even for a skilled trader... correct?



to aim for that percentage surely you would need to be purchasing stocks between 10c and a dollar. as you grow that amount to trade on the monthly basis, surely you would hit a limit where the stock doesnt cater for buy and sells of a greater size... but then to move to stocks over a dollar the smaller shifts would limit the ability to reach the profit margins on a monthly basis?



i am trying to weigh up the time spent doing share trading to justify the potential gains... not looking at trading as just a hobby... where are the serious gains as a home trader?