ΔE 26.7, loose: different enough that you should pick on purpose. Crimson Magenta is much more saturated than Bare Metal Silver.
Can I use Crimson Magenta instead of Bare Metal Silver?
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 27). Crimson Magenta is much more saturated than Bare Metal Silver.
Can I use Bare Metal Silver instead of Crimson Magenta?
The same difference applies the other way round: Bare Metal Silver is much more muted.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.