thanks for all the great input. i have read Dr Ashbys report and i do believe the data he has published. this is a new bow to me and so far it paper tuned with the beman 500 and 175 grain point. i sent for the field point test heads sold at 3 rivers and will experiment more with a heavier FOC, but clean flight was also an important factor in Dr Ashbys' equasion in which he determined penatration. i will go as heavy as i can without trading clean flight. thanks to your responces i will have few options when it comes to making the switch to a broadhead. on aluminum and carbon arrows, so far i have had good luck with the G5's, on woods i generally use wendsell woodsmans. i have not even begun to experiment with woods yet.

enjoying the input.

Thanks

jim