I had a hickory bow spiit at the string groove,( maybe it was gonna split with any string,, that is in 25 years of bow making), small diamenter ff,, I think if I had padded the loop it would have been fine,, ,, I have never had any problem with osage,,
I still shoot b 50 on alot of bows, I like the thicker string,, and when I use fast flight I have started to pad it just in case,,