I’ve just changed my arrows and noticed the change to my sight mark was not what I expected.
Old arrows 500 spine, Medallion XR. Limbs are Ukkha SX50. Arrows were tuned at 30m, sight mark was 48 at 60m.
New arrows 400 spine, Easton Advance, same limbs, arrows again tuned at 30m. Sight mark is now 53 at 60m.
Draw length is the same, as is brace height. Draw weigh has gone up to bring the arrows into tune (about 3/4 more turn on the bolts) (Don’t have the new draw weight yet). Tiller differs but the tiller difference remains the same. I’ve used a new string but the same number of strands.
I would have thought with the higher draw weight the arrow trajectory would be flatter so the sight would go up but it’s gone down.
Anyone care to explain the logic in it?
Old arrows 500 spine, Medallion XR. Limbs are Ukkha SX50. Arrows were tuned at 30m, sight mark was 48 at 60m.
New arrows 400 spine, Easton Advance, same limbs, arrows again tuned at 30m. Sight mark is now 53 at 60m.
Draw length is the same, as is brace height. Draw weigh has gone up to bring the arrows into tune (about 3/4 more turn on the bolts) (Don’t have the new draw weight yet). Tiller differs but the tiller difference remains the same. I’ve used a new string but the same number of strands.
I would have thought with the higher draw weight the arrow trajectory would be flatter so the sight would go up but it’s gone down.
Anyone care to explain the logic in it?