Overall a poor showing on my part but lots of great learning in the process. Ended up going 0/3 and completely missed the target on 2/3 shots. I suppose that’s what I get for trying to use a new and unproven setup.
For the hive mind - I’m using very old arrows that are borderline underspined for my bow and on the lighter side, which really showed when trying to shoot broadheads. Arrows are GT XTH 7595 (8.9 GPI) cut to 28.5” with 100g points for a total weight of 405 grains. With my 30” draw length and a draw weight of ~65 pounds, that puts my arrow speed at 298 fps.
Bow is well tuned for these arrows with field points out to 60 yards but adding broadheads for the cold bow challenge caused POI to shift up 6” and left about 4” at 40 yards. In the photo below the two lower arrows are hits on middle dot with field points and the broad head is high-left.
I’ve read that speeds > 280 FPS become much more challenging to tune broadheads and this is the first time I’ve ever had that kind of velocity as my old bow shot these arrows around 275 FPS due to shorter draw length. Am I correct in assuming that a longer, heavier spined arrow (say 500 grains total weight) with more weight FOC (current arrow is 8% FOC) going about 270-280 FPS will fly better and be easier to tune?
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