I just bought some of the 1535 Blems from Big Jim for a friend who is shooting a 30- 40 # bow, so now I'm thinking I'd like to try them out of my 45-50 # bows ( I currenlty shoot 3555) and am not going to switch just thought I'd shoot some, however can I hurt my bow if the arrow weight isn't heavy enough? say shooting 125 gr tips?  Thanks.

i am fairly sure your safe i shoot about 5 different spine wgts in mine from way light to telephone pole for different reasons never had a problem

Gold Tip 1535 weigh 7.6 gpi, 3555 weigh 8.6 gpi.  The weight difference between the two 30 inch arrows, 30 grains.  No problem.

I made some for my son and the total weight with 100 gr point is 375 gr that's with a 29.75 shaft and standard insert. You will be around 400 grains. if you don't have to cut the shaft too much. At 50 pounds you will have 8 GPP but I don't think there gonna fly right they will be weak.