Did I mention I finished with a V Bull?
Posted: Sat Feb 18, 2012 6:23 pm
OK, so a V is not particularly impressive and I saw a few hit today at 800 & 1000 yards but they were thin on the ground at 1200 yards, it was bloody windy for Barton Road and decidedly damp as well.
I had swapped out the rings on the S&L so I knew it needed to be zeroed. Once my first stint of RCO duties were finished I settled down at the 800 firing point and bore sighted at a flag pole at 400, as I have Apel mounts and rings fitted I can adjust the zero through the rear mount which is a nice touch so a couple of tweaks and it 'looked' to be right. Time to try. I use BulletFlight to do my base calculations so I entered the distance and temperature and took the shot, saw the spash so dropped a couple of MOA off and was on the frame, up a bit and Happy days. Now I had an 800 'zero' I could add just under 11MOA at the 1000 yard point. It turned out I only needed 9.125 MOA to get to the V so that was OK albeit a tad strange as BF is usually within 1MOA of the mechanical elevation.
BF suggested I need another 14.6MOA for 1200 but that put the POI way high, the good news at 1200 is you can shoot and easily watch the splash, this time I had to drop 3.6MOA to get on the 5 ring. Now I know the MV as I chronoed it end of last year so either my Kahles is not giving what I know to be MOA or I am missing something, this does provoke the question, are Kahles 'scopes graduated in true MOA or shooters MOA? Either way it does not explain the factor of 1:1.2 I had to apply to the software calculations to get my actual drops. Wind was harsh for Barton Road but not enough to do this.
Anyway, last shot at 1200 was a V finish, considering it was a skinny little 139 grain round shot from a lightweight sporter rifle with a 12X 'scope and I had been dancing around the 5" white V Bull for the majority of my shots so in that respect I was pleased.
Does any one have a view on the variance between BF and my true drops or should I write it off to one of those things? I alway confirm true drops on the range but seldom see such a difference as this.
I had swapped out the rings on the S&L so I knew it needed to be zeroed. Once my first stint of RCO duties were finished I settled down at the 800 firing point and bore sighted at a flag pole at 400, as I have Apel mounts and rings fitted I can adjust the zero through the rear mount which is a nice touch so a couple of tweaks and it 'looked' to be right. Time to try. I use BulletFlight to do my base calculations so I entered the distance and temperature and took the shot, saw the spash so dropped a couple of MOA off and was on the frame, up a bit and Happy days. Now I had an 800 'zero' I could add just under 11MOA at the 1000 yard point. It turned out I only needed 9.125 MOA to get to the V so that was OK albeit a tad strange as BF is usually within 1MOA of the mechanical elevation.
BF suggested I need another 14.6MOA for 1200 but that put the POI way high, the good news at 1200 is you can shoot and easily watch the splash, this time I had to drop 3.6MOA to get on the 5 ring. Now I know the MV as I chronoed it end of last year so either my Kahles is not giving what I know to be MOA or I am missing something, this does provoke the question, are Kahles 'scopes graduated in true MOA or shooters MOA? Either way it does not explain the factor of 1:1.2 I had to apply to the software calculations to get my actual drops. Wind was harsh for Barton Road but not enough to do this.
Anyway, last shot at 1200 was a V finish, considering it was a skinny little 139 grain round shot from a lightweight sporter rifle with a 12X 'scope and I had been dancing around the 5" white V Bull for the majority of my shots so in that respect I was pleased.
Does any one have a view on the variance between BF and my true drops or should I write it off to one of those things? I alway confirm true drops on the range but seldom see such a difference as this.
