With the weather getting warmer as of late, I was able to get out to our "Plink" range to shoot my HW97K .22 and HW97KL .177 with new Hawke Varmint 4-16x44mm and 6-24x44mm, respectively.Something I had never thought of before with my two HWs. After upgrading to the two Varmint scopes over a month ago, I have only been shooting both guns indoor at 14 yards. My groups were ok but not consistent day to day. It was only after last Sunday's shoot that I found out both of my HWs have barrel droop! I was unable to raise the POI at 25 yards because I had reached my max elevation. I didn't realize at first and thought here we go again, scope problem.Thanks to my friend who has better knowledge with rifle/scope. He advised me to "mechanically centering" my scope by finding the mid point of the max-min clicks in both the elevation and windage. After carefully clicking and counting the number of clicks to determine the half-way point, I re-mounted the scope back on my HW and shoot at the target. Long and behold, the POI was 6" lower and a bit to the left for my first Varmint scope. So, indeed both of my HW has some barrel droop issues to certain degree. I tried different shim thickness for each gun and I was able to hit my target dead centre at 14 yards with minimum click adjustments. What a relief! The scopes were non-defective and my guns are shooting true as long as I do my part. I am extremely happy now that I got that figured out. Everything that I thought I knew or assumed were incorrect in the past! I blamed the other new scopes before when I was having trouble holding my zeros consistently in the past.Two important lessons I learned: Firstly, if the inner tube of your scope is not free-floating at its true centre, as least closed to it, your POI will risk the chance of moving around and not staying on zero especially if your elevation or windage is turned too much one way or another and "pinching" occur inside the scope. Secondly, check if your barrel has droop issue.So I hope my mistakes and my findings will help some of you out there if you are having problems holding zero with your scope or reaching max elevation on your turret. Check for barrel droop!!!!good luck and cheers.
Well, I am a newbie, but bending a barrel to compensate for droop sounds wacky. I bought a set of Sun Optics adjustable airgun mounts for my HW30 and they work like a charm.
Hi nced,how do you go about bending the barrel? what tools and method do you use?not sure if I am brave enough to try that on my HWs, but I do have a diana 24 that I might practice on, lol.thanks.
The "Z" is my zero distance (25 yards in this case), if after focusing for the shot the "+" lines up with the marker I know to hold "crosshair on", if a "." lines up I know to hold "one dot high", if a vertical "dot slash dot" ".|." lines up after focusing I know to hold "between the first and second lower dot" (remember all aim points are either dead on or hold over), if two vertical dots ".." are lined up with the marker after focusing I know to hold "two dots high".
Quote from: nced on March 28, 2014, 08:57:12 AMThe "Z" is my zero distance (25 yards in this case), if after focusing for the shot the "+" lines up with the marker I know to hold "crosshair on", if a "." lines up I know to hold "one dot high", if a vertical "dot slash dot" ".|." lines up after focusing I know to hold "between the first and second lower dot" (remember all aim points are either dead on or hold over), if two vertical dots ".." are lined up with the marker after focusing I know to hold "two dots high".This is a brilliant and would so useful for hunting. Definitely going to do this to all my ao scopes if we ever get a non windy day.