Good Paintball Mask? Answered

I have a cheap jt paintball mask that came in a kit with a cheap pump gun I got a while ago.  The mask is just short of 1/8" thick and made of bendable plastic.  It offers protection from paintballs at 200fps but I am not sure about higher velocity guns.  It can only protect against up to 300 fps. So could I use it for battles with semi auto guns like viewloaders, tipman 98s and so on (beginner/intermediate guns)? or will I have to purchase a new one. Note: I have long since lost the manual for it.