Welcome to the forum first of all! Be sure to introduce yourself in the introduction section. But to answer your question, sorry bro, you can't convert to a bigger caliber. It works the opposite.
GOFFA Council Member
Gun Owners For a Free America
"Today, we need a nation of Minutemen, citizens who are not only prepared to take arms, but citizens who regard the preservation of freedom as the basic purpose of their daily life and who are willing to consciously work and sacrifice for that freedom."
~John F. Kennedy