| The violin basses actually use a 32" set of strings, I'd put long scale strings on it with no hesitation. Just trim the ends to leave about 4 finger widths past the tuner, and go for it.
I've used long scale strings on both 30" and 32" basses with no problems. The only thing you might run into is that if you cut the strings rather short, the cut end might not fit down into the hole in the tuner. Some tuners have rather narrow slots to access that hole. Remedy - leave the string a bit longer so you're leaving some of the taper at the end. The smaller diameter of the string should fit down into the tuner.
You can always cut it SHORTER!
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