is my logic correct here?

I am a home hobby welder, mostly making furniture and target stands for myself and friends. I have a Hobart 210 MVP using C25 and solid core wire. I am self taught, with most of my resources coming from "learning the basics" videos on youtube.

My question is; the Hobart machine has a chart with recommended wire feed/ voltage settings. if I go up a notch in voltage, will i get better penetration? Do I have to adjust the wire feed speed as well?
Thanks
I am of the practice, test, practice , test camp. with different metals, you get different results.. BTW I suck at welding, but still, I do a bit of it. Wish my hand steadier and my eyes younger.
 
@mzvarner,

Whenever I have a concern about the machine settings for a particular job, I simply do some tests.
Use the same material, the same technique and play with the machine settings until you get what you need.
You can learn a lot about the machine, material and the process this way.
I have not found any better indicator.
-brino
 
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