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FIVE AND DIME AIRGUN CHALLENGE

Billm

Grand HAMster
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Florida Panhandle
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1. Five shot groups in a dime sized bull.
2. Start at whatever range you would like.
3. The Bonus can be used for a longer range if available.
4. Place a dime or a .710” or 18mm circle over the group. If no tears show outside the dime you score 1 point. If any tearing shows outside the dime the score = 0 points.
5. Any caliber up to .30. Any pellet or slug. Any equipment or shooting.
6. Don’t practice - take the target out and shoot it. There are two 18mm dots at the top that can be cut out for use in scoring.
7. Take a photo of your results and post it in the Challenge thread in the Hard Air Magazine forums - IT’S FOR FUN - THE ONLY THING AT STAKE IS YOUR PERSONAL INTEGRITY.
8. We will run it until there is no interest. No limit on entries.

The inspiration for this challenge is simple: if you do a search in any of the airgun forums for group size, the posts describing the shooters groups size being smaller than the size of a dime are numerous. A U.S. Dime (10 cents) has a diameter of .710". If your rifle is only capable of shooting a dime sized group at 50 yds/meters that is just under 3 MOA. In comparison the generally accepted (I believe) minimum acceptable MOA for a 50yd bench rest .22LR rifle is 1/2 MOA or .25" at 50 yards. For clarity, if you can cover your group with a dime with no tears showing, your group size is significantly smaller than .710". Groups are measured center to center in most cases. But, we are keeping this simple: how far can you shoot a 5 shot group that can be covered by a dime, from an airgun. I've use the dime phrase myself when describing group size. I'm also clear on the fact that just because a rifle/projectile como is capable of doing it, doesn't mean that I am LOL. Have some fun.
 

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Well I attempted it at 25yds, 50 yds and 75yds. No practice other than a few sighter shots as I had to move the DNT TNC-225R from the Beeman undercover to the BRK Ghost. I shot the challenge with the BRK Ghost Plus in .25, using JSB Exact Kings 33.95 gr pellets, Accu-Tac bipod, Arca mount made up of parts from Amazon, my diy rear rest, Garmin chrono. 79f, humid, winds variable but mostly out of the SE at 10-15 mph. Started out good and went downhill from there. I'm not sure if it was all the variable wind, me or just that the groups went squirrely at 50yds and beyond today. I will keep trying lol.
 

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Practicing is not a problem. What I really meant to say was: “ don’t be like me and the Springtime Challenge and not post your entries because you’re not happy with them”. I shot quite a few “entries” that were instead placed in the circular “practice” file lol. I would think that it would inadvertently impact the number of entries. The challenge is whether not we can shoot dime sized groups at will and at what range.
 
Ok, I can’t get past practicing with my Barra 250z LOL. I’m shooting really tight 25yd groups using JTS .22 25.39 gr pellets. But, then at 50yds I keep getting a flyer lol. I accidentally shot the 25yds on the bonus bull and 50yds on the 25 bull. The 25yd group is a half dime sized group.
 

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Well while i didn’t shoot this for this piticular challenge i think it kinda fits and seeing’s how i think it’s going to rain for the next week this was shot from bench with my ft ghost @35 yds single loaded and shot 1 shot right after disregarding wind. The measurements are outside edge of hole to outside edge. Top row was 950 middle row 810 and bottom no mod
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Well while i didn’t shoot this for this piticular challenge i think it kinda fits and seeing’s how i think it’s going to rain for the next week this was shot from bench with my ft ghost @35 yds single loaded and shot 1 shot right after disregarding wind. The measurements are outside edge of hole to outside edge. Top row was 950 middle row 810 and bottom no mod
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Very nice shooting. I’m envious. But, now it’s your fault now - my Sonoran is paid for and about to be power tuned. Of course I’m not really expecting it to improve my groups over the Ghost .25. But that’s the goal . Again, nice half-dime shooting.
 
Ok, I can’t get past practicing with my Barra 250z LOL. I’m shooting really tight 25yd groups using JTS .22 25.39 gr pellets. But, then at 50yds I keep getting a flyer lol. I accidentally shot the 25yds on the bonus bull and 50yds on the 25 bull. The 25yd group is a half dime sized group.
Bill, I'm just curious, but don't most people shoot the 25gr pellets at, or over, 900fps? Are you getting less flyers shooting around 850fps, or are you doing it for a higher shot count? When I was shooting the AEA 21.9gr pellets at 53y at 978fps, I was doing tiny groups but had a flyer problem too. I never tried pulling a patch between shots, but I probably should have. I was focused mostly on slugs I guess, and the two slugs I'm using don't throw flyers. You should use the .30, I would bet you won't get many flyers with that. I'm surprised that you aren't strictly using that for a while. When I get a new gun like that, it's hard to shoot anything else for a while, you must really like your Barra!
 
Bill, I'm just curious, but don't most people shoot the 25gr pellets at, or over, 900fps? Are you getting less flyers shooting around 850fps, or are you doing it for a higher shot count? When I was shooting the AEA 21.9gr pellets at 53y at 978fps, I was doing tiny groups but had a flyer problem too. I never tried pulling a patch between shots, but I probably should have. I was focused mostly on slugs I guess, and the two slugs I'm using don't throw flyers. You should use the .30, I would bet you won't get many flyers with that. I'm surprised that you aren't strictly using that for a while. When I get a new gun like that, it's hard to shoot anything else for a while, you must really like your Barra!
I was just trying different pellets/velocities trying to find what works. Honestly, I tried too many combinations instead of narrowing it down to one or two types and then varying the velocities. I haven’t shot the Barra much right now. I found the same thing with the Barra, no matter which pellet/velocity I used, I would get a tight group along with a flyer. I only slowed it down for the increased shot count. But with the CS4 comp. I can see me increasing the reg back up. Flyers with the Barra and Ghost are distinct and easily to notice. The Sonoran has had a few flyers, but it is more like a loose group. There’s only been a couple of erratic flyers. I don’t know if it’s the barrel, pellet or caliber, but it’s more consistent. I only got shoot two quick mags today, but managed to shoot a 104yd .75” 8 shot group. You’re right, at the moment I don’t have any desire to shoot my other guns.
 
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Time for another’s challenge. I was definitely challenged with this target/distances. I need to shoot a couple of groups to record, before I polish the Ghost Barrel. My groups tightened up a little bit with this session. But I still can’t shoot dime sized groups at 75yds. When I shot the 75yd group the wind changed 180deg, from a left to right to a right to left crosswind. I did not account for this and went off target, but luckily it was on a new corroplast backer so I could measure it. I placed the target at the 100yds for the bonus, but decided it was too windy to try. Not to mention that I was melting in a humid 105f heat index. I look forward to another challenge. @FL22
 

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