Prop and Benzoyl Benzoate--painless?

Anyone have any experience using this recipe for making prop:

1/4 cc benzoyl alcohol
3/4 cc benzoyl benzoate
1 gm test prop powder
9 cc oil

I read somewhere that ba can dissipate in a jiffy, leaving no solvent to keep the prop from crystalizing and causing pain. BB isn't supposed to do this, and the prop with both ba and bb in it shouldn't produce soreness. Just wondering if anyone can confirm . . .
10,000 Texas-Sized thanks . . .

I ve done prop at 100mg/ml with just about 5% BA and no bb. heat up the powder and oil first then add BA accordingly. Heating and swirling is the key. Btw 1 gram of powder is roughly 1cc in volume so do the math to find out the concentration

i make my fina like that with ba and a bb mixture ,and then add the fina powder and painless !

Hmm . . . very interesting . . . I'll have to stash that tid-bit of info away for future reference. I'm collecting pieces of info & pearls of wisdom for later . . .
Y'all are great; I'm learning more about medicine & anatomy on this board than I could ever learn from my family GP. Key seems to be "moderation in all AS."
Happy New Year to one and all . . .