If zeroed at 200 yards, and at 3100fps at the muzzle, there is no BC low enough to cause the bullet to drop below line of sight at 129 yards. The lower the BC, the higher the bullet will impact under those conditions. For that matter, there is no BC HIGH enough to hit below line of sight under those conditions, either.
My friend I tell you what I saw, it didn't make sense to me either, but there you have it. My rifle with a TSX was shooting lower than I expected, yet my friends with a partition was shooting about how we expected. Once bitten, twice shy.
