Learn English – How would you eloquently say “doing something for the umpteenth/nth/n-tieth time”

expressions

I want to say that someone was doing (something) for the N-tieth time in a row, but in a way that emphasises both that this action is performed again, after a substantial amount of times (successfully, with no emotional tint for the outcome of the actions) and that no one, neither the "actor" nor the narrator is counting precisely which time this is.

More exactly I want to write something like:
"She was reloading the gun for the N-tieth time", but in a way that will show that she has fired and reloaded the gun so many times, it's well past the easily numerable ones, like "first", "third", etc. and, yet, she doesn't count them.

EDIT:
This is for a short story, therefore I need an eloquent equivalent. Something that rolls of the tongue smoothly and is light and easy to read, as well as naturally flowing. It also needs to be somewhat complex, to that end I thank the people who have proposed the "umpteenth" answers, however (no offense) that sounds rural, uncouth and brings down the reader from the context I wish to establish. I realise it might be a good idea to specify the context, however it would be impossible at this point, as it only resides in my head in a fractured idea-state.

I was hoping there was an English equivalent to what we have in my country, which roughly translates to:

"She loaded the gun for the following time."
"She loaded the gun for the subsequential time."
It sounds bad, but I'm hoping I'm getting the point across.

Best Answer

I don't think one word will do what you want. How about "She reloaded the gun fluidly and repeatedly"

Fluidly means moving like a fluid, in a smooth, continuous manner. Synonyms for fluid, from Collins English Dictionary are:

flowing, easy, natural, smooth, elegant, graceful, fluent, effortless, feline, sinuous

repeatedly is defined here as:

over and over again; constantly

Another phrase the OP might use is:

Yet once again, she reloaded the gun.

To my surprise, the search for yet once again found that it it is from a poem From Lands Afar written for the Salvation Army's International Congress in 1914. (Author, Albert Orsborn).

Edit in Response to Comment by Dave_Thompson_085

See Google Books Yet once again for quotes from Shakespeare, Milton, Wordsworth, Dickens, Southey, and many, many other writers. Just one example (Wordsworth) from dozens, perhaps hundreds:

Yet once again do I behold the forms Of these huge mountains, and yet once again, Standing beneath these elms, I hear thy voice, Beloved Derwent, that peculiar voice Heard in the stillness of the evening air, Half-heard and half-created.

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