Re: High End Tactical: Part II
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Crnkin</div><div class="ubbcode-body">Damn. This site is like guilty until proven innocent. But fortunately I understand your culture, its ok
But it is only about 7% out in that test. In the first test he was out by about 3%. Super repeatable. Not.</div></div>
Chris,
Sorry if you think this is a rough crowd. This has been a fairly tame thread. No one has been banned and it hasn't been locked.
I for one am a strong believer in citing work and giving references. It's just lends a LOT more credibility to your statements. There are so many internet "experts" out there just spouting bullshit.
Thanks for the picture and link. I do remember reading that review now, and have to say I'm still confused. I saw that second target and just sorta' dismissed it because there is a dot marked POA and it's not even on a line, then I see the shots obviously missing high and then this statement, "This target almost matches up perfectly with the original track test I did prior to mounting the Razor on my Newman Precision 308win." I guestimated his tracking accuracy at 1% from looking at the first target and actually studying it instead of reading what he said. "I did notice that my impacts would land .1mil to .2mils high as I came up in elevation.." But if you look closely, the original group was high. Every hit was high. Huh? That second target looks like a lot more than that. So I just WTF'd and moved on.
This is why I check my scopes in a vise against a "cross" of 6 ft verticle and 3 feet horizontal. There are crosshair target dots at 10 mil up/down and 5 mil left/right. I can move the turret and watch the reticle move, see if it jumps or tracks smoothly and then see EXACTLY where it comes to rest without the shooter error or rifle accuracy affecting my judgement about the scope. Once I convince myself that the scope tracks mechanically and optically, THEN I shoot it and do the same thing. Recoil does have an influence on the internals of some scopes and is another variable that needs to be isolated.
Another thing. We won't accept 3 round groups on this site but will call them adequate for judging a $3000 scope with regard to tracking?
In order for shooting to *accurately* portray what the scope is doing, each adjustment would need at least 10 rds. with the mean center of the group being the actual POI. If we use proper test methods we will achieve more credible results.
Until I better understand what was going on with that second target, I'd have to say that the sample Vu had was very close to mine and that is off roughly 1%. Not sure what Vortex's standard is, but 1% really doesn't matter to me that much unless I'm shooting without field data over 1500 yds. and then wind is usually a far bigger factor for my followup, so a couple tenths adjustment of vertical is not big deal. As long as the error is repeatable and I know what it is, I can adjust for it.
John