FX Impact Accuracy Issue (RESOLVED)

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Helimech

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Jun 9, 2015
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I'd like to start off saying this was my worst day as an airgunner I've ever had. Worse than when my Impact broke in the first place. It started when I received my Impact back from repair. They sent me pictures of three consecutive 5 shot groups at 25 yards they did after the repair that were all a single hole with JSB Kings at 938 fps. I was so excited to get it back that I neglected to do my honey do list to scope it up and shoot. I got my sidewinder 30 sf mounted and shot a few sighters. I have my chrony set up to see my velocities at different power settings. My first real 5 shot group at 30 yards was 3/8" at 948 fps. A little hot so I dialed the power wheel back from max to 5. This slowed the Kings down to 930 fps and gave me a 1/2" group. I've had better accuracy with this rifle before it broke. I dial the power back one more time to 4 and averaged 900 fps. Got another 3/8" group. In total, I did 4 groups at max, one group at power 5, and two groups at power 4. My smallest group was 1/4" and my largest was 3/4". I'm upset at this point. I've slapped down some impressive groups with this rifle and these were horrible. I decide to get my Marauder with a Marmot Militia barrel out because I started doubting my shooting ability at this point and wanted to prove it wasn't me and that it was the Impact. My pressure gauge broke a few weeks ago on my Marauder, but I never used it anyway. I know I get 20 shots per fill so I just fill after the 20. I had pumped her up after I shot her two days ago and put her away topped off. I load up a mag, pull the trigger, and nothing. Apparently it leaked out all of the air in 2 days. I'm beyond angry at this point. My Impact isn't shooting properly and now my Marauder is broke. Not to mention I have an impending beating coming from my wife for not doing her list of chores she set out for me. So not I have to figure out if my Impact is still not fixed, my hawk scope is broke, or I just have a bad tin of pellets. Not the way I wanted this day to go. 


 
Sometimes God calms the storm. Sometimes He calms the sailor. If this is your worst day as an airgunner hopefully it will only get better from here. I have to admit thats a heartbreaker. Sometimes I balk at the cost of this equipment. It is only balanced by the amount of fun we have. When the fun stops it is extra frustrating. I think the patience required is the hardest part. Hang in there bro.
 
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 AZBOBCAT, I'm not sure the size of the range at AoA, but the paperwork they sent me says their groups were at 25 yards. When I first got my Impact, I was getting single hole groups at 30 yards consistently. They might open up to a 1/4" group with 16 shots. I got these groups right out of the box, so I'm confident it's not my shooting ability. That's why I wanted to shoot my Marauder so I could prove to myself that I wasn't the cause. I'm on my second tin of Kings, but they didn't get opened until after my Impact broke. I'm hoping it's just a bad tin of pellets and not my scope. I did recently move and I made sure I took extra care moving my rifles. Even with the extra care, my Marauder's pressure gauge didn't make it. I did clean the barrel of my Impact when I got it back from repair and shot 2 mags through it before I tried to get good groups. 1/2" to 3/4" groups at 30 yards isn't horrible for my marauder with the stock barrel, but it is very bad for my $1900 Impact. Now that I have a Marmot Militia barrel on my Marauder, I get better groups at 50 yards than my Impact is getting now at 30. Tomorrow I'll swap scopes and try it again. I won't be able to get another tin of pellets until Friday, so it's going to be a miserable 2 days. 
 
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Helimech: So what you are saying is you want / expect a single hole at 30 yards? a .25 cal pellet is 6.35mm is 1/4 of an inch, so that's as small as the hold should be, anything less that .5 inches should be consisted a good group in MY OPINION. Anything group 1/4 of an inch is a GREAT group in my mind. How many pellet do you shoot in your group. I know the new standard now "Thanks Ted" is a full clip no matter what how many that is. I have seen some single hole "1/4 inch groups" posted here by a handful of people, but that is FAR from the norm, SpinJ being one of them. I also know it could take him up to 5 minutes (if not more than) between shots as well. That's just my 2 cents at the end of the day nobody knows your gun better than you, i just think your groups look pretty good.
 
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Ginuwine1969, less than a quarter inch group is what I want/expect/have achieved previously with this rifle. I understand the outside diameter of a .25 cal pellet is 1/4", but group sizes are measured from center to center. A 1/4" group would have an outside diameter of 1/2". That is the minimum I would expect out of a rifle of this pedigree. My Marauder is doing better than that right now. Here is a photo of what AoA sent me of their 5 shot groups. [/IMG][/URL]

I was getting similar groups before my Impact malfunctioned. Here is a closeup of one of the groups I shot after I got it back. [/IMG][/URL]

There is something definitely going on on my end things and now I have to figure it out. 
 
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Helimech sorry to hear about your troubles, all in the airgun sport/hobby have experienced frustration/anger at some point. It is part of the game. We spend untold amounts of $$$$ for our enjoyment and when something doesn't preform like it should its frustrating.

As others have stated above clean the barrel and try a different tin of Kings. If that doesn't help check to see if the pellet is getting damaged before going into the barrel. That doesn't correct things the pellet might be clipping on the way out.

One thing is pretty certain the barrel is the same. It shot one hole groups before going in for repair its capable of doing it again. Did you chrony the gun before it went in for repair? If you did is it shooting as consistent now?
 
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MY PROBLEMS ARE SOLVED!!!!!!!!!!!!!! I'll start off with my Marauder. I found out it was leaking from the pressure gauge that quit working. Just so happens I have a pressure gauge from a 4500 psi ninja paintball tank that fits. Now comes my Impact. I started to shoot it again today with the last few pellets of my previous tin that I know worked flawlessly. Still crappy groups. I did notice that more often than not the pellet probe was a little rough going through the mag. Just so happens those were the shots that went away from the group. So I tried holding the mag with my thumb when I cycled a new pellet into the barrel and the probe went much smoother through the mag. My groups shrunk dramatically. I still had a slightly rough cycle every now and then, and it did open up my group a tiny bit. I contacted AoA to see if they used my mag for the testing or not. The gentleman that tested my rifle wasn't in, so I'll have to wait till Monday for that answer. I do believe these groups will answer it for me. Looks like I just need a new mag :) Here is a pic of two groups I shot at 30 yards using the JSB Kings from my second tin. 


Did I mention these are 16 shot groups? :) I couldn't be more happy right now. 
 
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"Helimech"I’d like to start off saying this was my worst day as an airgunner I’ve ever had. Worse than when my Impact broke in the first place. It started when I received my Impact back from repair....Did I mention these are 16 shot groups? /wp-includes/images/smilies/simple-smile.png I couldn’t be more happy right now.
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That's what I call a 180. If a plane mechanic can't figure it out we are all in trouble. Haha!
 
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