im shooting a boblee td 60in rec 52 at 27 but draw 26.5 currently using axis 500 cut to 27.5 with 145 gr tip using the planning method shoot good for spine at 20 yrds . these are 8.1 grs per in . about 390 grs i much rather around 500  if i add more tip weight they are to weak should i add weight tubes or opp for the 400s but i think i might need more tip weight then i want to  get them tuned  if there is any suggestions from the gang that would be great.also forgot to add whiletuning these 500s i had to build out side plate froe leather to velcro to a rug this is where it got the best                                                                                                                       thanks guys  

I am shooting a 340 FMJ axis at 57 lbs with a 100gr insert and 125gr tip. I had to leave them a little bit longer than I would have liked but have not had any adversity because of that.

thanks