June 29th, 2014

USA National Shooting Championship Results from Fort Benning

Rifle events concluded June 28th at the USA Shooting National Championships for Rifle/Pistol. These National Championships were Part Two of an intensive qualification process for the World Championship. USA junior team members were chosen through a selection process that included two qualifiers and a final at the National Junior Olympic Shooting Championships (NJOSC) and another two qualifiers and two finals at the National Championships held at Fort Benning, Georgia this week.

USA Shooting National Championships Fort Benning Georgia

USA Shooting National Championships Fort Benning Georgia

Photos from Championship events can be viewed and downloaded for free here.

Not only were USA titles on the line, but for Junior shooters, the chance to represent the USA at the ISSF World Championship in Granada, Spain was also up for grabs.

USA Shooting National Championships Fort Benning Georgia

Garrett Spurgeon claimed yet another National Title today by winning the Junior Men’s Air Rifle event. At this National Championships, Spurgeon also won the Junior Men’s 3P Rifle title. The gold medalist for Junior Women’s Three-Position Rifle, was Lauren Phillips.

In the Open division, Ryan Anderson claimed top honors in Men’s Air Rifle, narrowly edging out defending National Champion Connor Davis. The Women’s Open Division Three-Position title went to Amy Sowash. Winning silver was 2012 Olympian Amanda Furrer and winning bronze was Sarah Beard. Beard also won the prone rifle National Championship title. Beard has now won five National titles throughout her career (four in the Open division, one in Junior).

USA Shooting National Championships Fort Benning Georgia

Paralympic Competition at Fort Benning
Along with the regular competition for able-bodied shooters, these Championships included Paralympic Air Rifle Prone, Free And Sport Pistol events for injured/disabled athletes. Some of these competitors shot from wheelchairs, while others shot from a bench with support for the rifles.

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USA Shooting National Championships Fort Benning Georgia

USA Shooting National Championships Fort Benning Georgia

USA Shooting National Championships Fort Benning Georgia

Complete results from the National Championships can be found here.

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June 29th, 2014

When Good Scopes Go Bad — Making the Difficult Diagnosis

Riflescopes are mechanical contraptions. One of the sad realities about precision shooting is that, sooner or later, you will experience a scope failure. If you’re lucky it won’t happen in the middle of a National-level competition. And hopefully the failure will be dramatic and unmistakable so you won’t spend months trying to isolate the issue. Unfortunately, scope problems can be erratic or hard to diagnose. You may find yourself with unexplained flyers or a slight degradation of accuracy and you won’t know how to diagnose the problem. And when a 1/8th-MOA-click scope starts failing, it may be hard to recognize the fault immediately, because the POI change may be slight.

When An Expensive Scope Goes Bad
Recently, this editor had a major-brand 8-25x50mm scope go bad. How did I know I had a problem? Well the first sign was a wild “drop-down” flyer at a 600-yard match. After shooting a two-target relay, I took a look at my targets. My first 5-shot group had five shots, fairly well centered, in about 2.2″. Pretty good. Everything was operating fine. Then I looked at the second target. My eye was drawn to four shots, all centered in the 10 Ring, measuring about 2.4″. But then I saw the fifth shot. It was a good 18″ low, straight down from the X. And I really mean straight down — if you drew a plumb line down from the center of the X, it would pass almost through the fifth shot.

That was disconcerting, but since I had never had any trouble with this scope before, I assumed it was a load problem (too little powder?), or simple driver error (maybe I flinched or yanked the trigger?). Accordingly, I didn’t do anything about the scope, figuring the problem was me or the load.

Riflescope Repairs

But, at the next range session, things went downhill fast. In three shots, I did manage to get on steel at 600, with my normal come-up for that distance. Everything seemed fine. So then I switched to paper. We had a buddy in the pits with a walkie-talkie and he radioed that he couldn’t see any bullet holes in the paper after five shots. My spotter said he thought the bullets were impacting in the dirt, just below the paper. OK, I thought, we’ll add 3 MOA up (12 clicks), and that should raise POI 18″ and I should be on paper, near center. That didn’t work — now the bullets were impacting in the berm ABOVE the target frame. The POI had changed over 48″ (8 MOA). (And no I didn’t click too far — I clicked slowly, counting each click out loud as I adjusted the elevation.) OK, to compensate now I took off 8 clicks which should be 2 MOA or 12″. No joy. The POI dropped about 24″ (4 MOA) and the POI also moved moved 18″ right, to the edge of the target.

Riflescope RepairsFor the next 20 shots, we kept “chasing center” trying to get the gun zeroed at 600 yards. We never did. After burning a lot of ammo, we gave up. Before stowing the gun for the trip home, I dialed back to my 100-yard zero, which is my normal practice (it’s 47 clicks down from 600-yard zero). I immediately noticed that the “feel” of the elevation knob didn’t seem right. Even though I was pretty much in the center of my elevation (I have a +20 MOA scope mount), the clicks felt really tight — as they do when you’re at the very limit of travel. There was a lot of resistance in the clicks and they didn’t seem to move the right amount. And it seemed that I’d have four or five clicks that were “bunched up” with a lot of resistance, and then the next click would have almost no resistance and seem to jump. It’s hard to describe, but it was like winding a spring that erratically moved from tight to very loose.

At this point I announced to my shooting buddies: “I think the scope has taken a dump.” I let one buddy work the elevation knob a bit. “That feels weird,” he said: “the clicks aren’t consistent… first it doesn’t want to move, then the clicks jump too easily.”

Convinced that I had a real problem, the scope was packed up and shipped to the manufacturer. So, was I hallucinating? Was my problem really just driver error? I’ve heard plenty of stories about guys who sent scopes in for repair, only to receive their optics back with a terse note saying: “Scope passed inspection and function test 100%. No repairs needed”. So, was my scope really FUBAR? You bet it was. When the scope came back from the factory, the Repair Record stated that nearly all the internal mechanicals had been replaced or fixed: “Replaced Adjustment Elevation; Replaced Adjustment Windage; Reworked Erector System; Reworked Selector; Reworked Parallax Control.”

How to Diagnose Scope Problems
When you see your groups open up, there’s a very good chance this is due to poor wind-reading, or other “driver error”. But my experience showed me that sometimes scopes do go bad. When your accuracy degrades without any other reasonable explanation, the cause of the problem may well be your optics. Here are some of the “symptoms” of scope troubles:

1. Large shot-to-shot variance in Point of Impact with known accurate loads.
2. Uneven tracking (either vertical or horizontal).
3. Change of Point of Impact does not correspond to click inputs.
4. Inability to zero in reasonable number of shots.
5. Unexpected changes in needed click values (compared to previous come-ups).
6. Visible shift in reticle from center of view.
7. Changed “feel” or resistance when clicking; or uneven click-to-click “feel”.
8. Inability to set parallax to achieve sharpness.
9. Turrets or other controls feel wobbly or loose.
10. Internal scope components rattle when gun is moved.

Source of Problem Unknown, but I Have a Theory
Although my scope came with a slightly canted reticle from the factory, it had otherwise functioned without a hitch for many years. I was able to go back and forth between 100-yard zero and 600-yard zero with perfect repeatability for over five years. I had confidence in that scope. Why did it fail when it did? My theory is side-loading on the turrets. I used to carry the gun in a thick soft case. I recently switched to an aluminum-sided hard case that has pretty dense egg-crate foam inside. I noticed it took some effort to close the case, though it was more than big enough, width-wise, to hold the gun. My thinking is that the foam wasn’t compressing enough, resulting in a side-load on the windage turret when the case was clamped shut. This is just my best guess; it may not be the real source of the problem. Remember, as I explained in the beginning of this story, sometimes scopes — just like any mechanical system — simply stop working for no apparent reason.

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June 29th, 2014

Big Discounts on Nikon AR Riflescopes — Up to $100.00 Off

If you need a scope for your AR-platform rifle, Nikon has you covered. With Nikon’s latest AR New Rules promotion, you can save up to $100.00 on caliber-specific AR riflescopes and mounts.

nikon scope discount sale rebate

The New Rules for AR promotion offers shooters up to $100 instant savings on a wide selection of AR-dedicated riflescopes. The New Rules for AR promotion includes nearly 20 models of AR-dedicated riflescopes, including the M-308, M-223, and P-300 BLK lines. This Nikon promotion is in effect right now, and will run through August 2, 2014. To learn more about the New Rules for AR promotion, visit www.nikonpromo.com.

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