Posted: 12/1/2005 11:17:32 PM EDT
|
I've got an RRA 24" upper that should shoot like a champ. I bought Leupold QRW ringd for it and a Leatherwood 6.5-20x50 Uni-Dial scope for it. I took it to the range to sight it in and it got horrible groups. I mean the "somethin' aint right" horrible. I am trying to logic this out. I know that RRA makes a very accurate varmint upper. I know that Leupold has a reputible name (for rings?). ... Is it the scope? Should I just buy a different $300-$400 dollar scope and try it out? I would just ask for some cool local guy to take it shooting with his own quality scope, except there's a BIG gun show here in AZ tomorrow so that would probably be the best time to buy a different scope. Clint |
Maybe. More probably it's the ammo. Handload, handload, handload. Things will change. Oh, if that crown's a mess (a "mess" on a crown means the tiniest scratch) that's one contributing factor. Check the throat for erosion as well. Back off the scope mount screws and retighten, re-zero, and shoot again. |
|
Possible parallax error. Lock or bag the rifle down in a rest. While looking at a fixed dot on the target, move your head left & right at the occular and see if the cross hairs move from the dot. Be careful not to bump the rifle. Most scopes are parallax optimised at 100 yards and thats where you should sight it in at unless the mfr states otherwise. If you are at closer range, then you will often get error. I had as much as 1 inch of error in a Burris at close range. I sent it back & they adjusted the parallx for the range I specified. A lot of your "target" scopes have an adjustable objective for this purpose. Try different ammo , 5 shot groups with the rifle in a rest. Check your mounts, I've seen dings & burrs cause rings not to seat properly. HTH ETA I see the Leatherwood has AO, are you adjusting this for minimal parallax error? |
When I say terrible I mean... 6" or 7" at 100 yards. I don't believe I'm all that great of a shot, but to put things into perspective I think I might do better with my iron sights on my sks  .The ammo was various high grain black hills remanufactered. I used the same type of grain in each group. Should I worry about the mount first (GG&G riser and Leupold QRW's), or would it more likely be me scope? |
I have to disagree I own a Leatherwood 3-9x40 Camputer and have it on a colt ar15a3, it works wonderfully. 1/2 5 shots groups with out a problem. Even using Wolf I can pretty much hit what I want to a degree. Is it the finest scope, not by any means but better than quite a few I have tried. So I am just guessing the scope isnt the main problem. |
)
|
You can probably eliminate the ammo as a problem. Black Hills is reasonably accurate in my experience. I've used QRW rings before but I'm not a big fan of quick detachable optics or mounts. With a scope riser, quick release rings, and a scope of dubious quality, you have triple the potential for error. Make sure your mounts are tightened solid and locktite the threads. Try another scope if you have one available. Even if it's not zeroed you can still check group sizes. |
Are you shooting from a rest? |