Brandon_SPC
Lil-Rokslider
- Joined
- Feb 19, 2019
- Messages
- 267
I thought this was pretty interesting. Yesterday I went to have my Bowtech SR6 tuned. While talking to the shop owning he really wanted to shoot my 635 grain arrow through the chronograph and I wanted to shoot his 500 grain arrow just to see how my bow does with a lighter arrow.
Specs for each bow. Both bows are tuned, cams timed, etc.
RX1
- Draw weight 83 lbs
- Draw length 30"
- Brace Height 6"
- IBO for a 70lb versions 340 fps (not sure how to calculate the 80lbs)
SR6
-Draw weight 72lbs also on performance setting
-Draw length 30"
-Brace Height 6"
-IBO at 70lbs 352 fps
Speed results were the same with both bows.
RX1 shot the 635 grain arrow at 265 fps and the 500 grain arrow at 298 fps
SR6 shot the 635 grain arrow at 265 fps and the 500 grain arrow at 298 fps.
We both thought this was a flute and re-shot through the chronos again and every single time it would shoot the same. Pretty interesting results between the same bows because I honestly thought the SR6 was going to come in at about 10 fps less on the 635 grain arrow and about 5 fps less on the 500 grain arrow.
The chronograph used was a ProChrono Pal Chronograph and I have used a few of these in the past for load development and they have always seemed to be accurate. I also shot the SR6 through a different chrono about a week before. It shot a 585 grain arrow at 273 so the averages that came out from yesterday show that the chrono that was used is fine. Also if I recall him mentioning that he used the chrono earlier on another bow and it was producing the right numbers for that bow and the arrow weight used.
I thought some of y'all would enjoy these results.
Specs for each bow. Both bows are tuned, cams timed, etc.
RX1
- Draw weight 83 lbs
- Draw length 30"
- Brace Height 6"
- IBO for a 70lb versions 340 fps (not sure how to calculate the 80lbs)
SR6
-Draw weight 72lbs also on performance setting
-Draw length 30"
-Brace Height 6"
-IBO at 70lbs 352 fps
Speed results were the same with both bows.
RX1 shot the 635 grain arrow at 265 fps and the 500 grain arrow at 298 fps
SR6 shot the 635 grain arrow at 265 fps and the 500 grain arrow at 298 fps.
We both thought this was a flute and re-shot through the chronos again and every single time it would shoot the same. Pretty interesting results between the same bows because I honestly thought the SR6 was going to come in at about 10 fps less on the 635 grain arrow and about 5 fps less on the 500 grain arrow.
The chronograph used was a ProChrono Pal Chronograph and I have used a few of these in the past for load development and they have always seemed to be accurate. I also shot the SR6 through a different chrono about a week before. It shot a 585 grain arrow at 273 so the averages that came out from yesterday show that the chrono that was used is fine. Also if I recall him mentioning that he used the chrono earlier on another bow and it was producing the right numbers for that bow and the arrow weight used.
I thought some of y'all would enjoy these results.