swage terminals: metric vs imperial

[cambion]

A practical question for rigging experts.

I have 9/32" and 1/4" swage terminals which I want to swage to 7mm and 6 mm metric wire.
9/32"=7.1 mm so the difference is not that big.. but 1/4"=6.3 mm - 0.3mm is substantial difference. I am not too familiar with the swaging process - is it safe to try something like this or not? I am quite positive that .1 mm is fine for 9/32" terminals , but not sure about 1/4" on 6 mm wire

thanks in advance.