squirrel, I found your qold tips are as follows
100grain tip 4.750inch vanes=433 total weight @6.9foc%
125 458 total weight @9.1foc%
100grain tip 5inch feather=416 total weight @9foc%
125 441 total weight @11.1foc%

go to bowjackson.com and look at the info
hopes this helps.....

Evan
Archery Accessories
301-872-0110