Accuracy problem
 

Hey, i just bought a BNIB CYMA Aks-74u From Bob the angry potato. He said that is comes stock with a tight bore, metal bushings, and I believe him, but when I tested it, i couldn't even hit the same spot on a newspaper from 30 ft.
I have heard that the aimers are off with these, but im not convinced. Could there be anything else that is affecting my gun? Any solutions to get better accuracy. And also, i was using .20 gram BB's in a windless environment.

Clean your barrel, there might be some leftover crap from manufacturing (Well known for dboy's guns to have shit tons of grease in their barrels, I don't know about CYMA though, well worth a try, and a good habit to have.)

If that doesn't fix your problem, it might be your hopup, consider getting a new piece of rubber.

Did that, probably should have mentioned that. :D

buddy, airsoft guns are not real guns. They won't hit the exact same spot everytime.

And AKs have crude sights, they are hard to have consistent shots with.

Good to know, this is my first AEG after all, i guess i was just expecting it to be a lot more accurate, especially if it has a tight bore.

could be BBs...or your aim!....lol

Haha, could be, but I don't think so ;) Also conscript, it was 30ft, the hop-up was unadjusted, and i don't think that would affect it, as it was 30 ft. Never know though.

the best grouping I got at 30 feet with an AEG indoors was 0.6 inch. at 40 feet, it will become 1 inch.

Yea, if your spread is like ~1 inch with the gun anchored, I wouldn't worry too much about it.

Definatly worse than that :o I was thinking maybe a scope mount, and a simple RDS would correct the sight problem, if there is one. Any suggestions? Also would anyone happen to know the approximate FPS with .28 gram BB's, when its stock 490 with .12g? I did the pop-can test with my .20, and it went through both sides, so I'm estimating 360-380? But i would like to use .28;s, so i would appreciate any help.

Have you adjusted your hop up (as in, made sure it's on)?

Often you will see a performance decrease if you turn your hop up off.

+1 to the bb's. I changed weight and brand and went from 55% to 85% accuracy. (accuracy meaning number of bb's hitting a small target.)

Also make sure you hop-up bucking rubber is sitting nice in the chamber and on the barrel.

Or you could just have a lemon....:D

To tell you the truth, I'm not sure, i havent gotten a chance to test it out longe range, as i live in a rural area, but if you have one, or have seen one, the pull able tab which im assuming is the hop-up(im a new guy), the tab is all the way to the right.

Accuracy has a LOT more variables than just the barrel, it's affected by every part in your gun that comes in contact with the air that moves that BB, the piston head, cylinder, cylinder head, air nozzle, hopup rubber (very important one), and of course the fact that CYMA AK's aren't very good at anything to begin with...
For starters switch to .25s, and buy a 5$ upgrade hopup rubber. Make sure that barrel was installed properly as well.

Take your flashhider off and look down the barrel (observe usual safety protocols). Is the inner barrel centered within the outer barrel? Does the inner barrel have a lot of room to move/wobble inside the outer barrel? If so, wrap some tape around the inner barrel, until it no longer wobbles inside the outer barrel.

Even 0.20g Bbs suck ass at 30ft. Trust me on that one, there is a reason they ae only used for chronying and CQB within a few feet. The rest of the time you should use 0.25g indoors where ranges can be past 50ft, and 0.25g to 0.28g when playing outdoor games. I don't even use less than 0.28g BBs in my GBBs for a VERY good reason!

increase BB weight, clean barrel, get a new hop-up rubber. and if that doesn't work, do everything i just listed, except instead of cleaning the barrel, get a new barrel. Just cause it came with a tightbore, doesn't mean its a good one. Go grab a prometheus 6.03 and you are golden. also check the fps consistency with a chrono.

what cdn_stalker said is veryyyyyy true! i shot my ak last friday with .20 and was getting horrible accuracy at about 70-80 ft, i tried a mag of bastards .25 and BAM! HUGE improvement! i'll dry out my .20 bags and only buy .25 + in the future!

OK, will do. Thanks everyone :D

Is the reason why even God wonders WTF happens when a BB comes out of nowhere. ;)

But seriously, heavy BBs equals tighter groups any day. I shoot at 30ft indoors more than any other range; using 0.30g BBs I can get 1" groups with my KSC MK23 most times, andit has a tightbore, but it's a PISTOL! And can get easy 3" groups with my G19 using 0.28g BBs as well.

hmmmm! i thought theses result was because YOU was shooting the pistol :D

i have a stock jg bar-10 gspec (303mm barrel) and i get impressive accuracy with .30 (can't wait for my pdi 6.01 450mm to arrive!)

Haha, when the time comes, can anyone recommend a nice TB that fits my 74u? Preferably without a silencer.

dont know about the lenght, just mesure it and for the brand prometheus are great, but if you have the dough go for the pdi one's

this one should do.

http://www.airsoftparts.ca/store2/in...roducts_id=460

Hmm, length, i have no idea either... and I just know, if i tried to take my gun apart, it would never find itself back, unless i took it to the docs. Even for a simple installation, i would defiantly go to the Docs anyhow, just for the cleaning, re shim, installation all in one sitting. Also, I'll defiantly wait before buying the TB, I'll try my .28's im buying. Also, i need to find out the velocity of my gun on .28's. Any ideas people? its 490 FPS on the box(.12g) And from pop can test, I'd say 360-380 with .20g. I really want to find out what it would be with .28.

on another note i confirm what CDN has posted. I was using .20g and went to .25 and there was a huge difference.

You think it could have been the BB's? They were Crosman .20g, which i know i should never use in a higher end AEG, but they were seamless, and i needed to try it out. I will be purchasing my TLP charger and a couple of bags of .28's or .25 off BBbastard.

could've been... maybe. But i've never heard anything good about crossman bbs.... Give the new higher grade bb's a chance and let us know how it goes.

Sure thing Ktown, but i think it may be a few weeks, or less, i wanna go check out DS before i order over the internet, to avoid shipping, ect. Since it's only around 1 hour away, I'd figure it would save me time if they carry them.

DS?

Sorry, Daves Surplus and Tactical. It's in New West Minster.

Gotcha. Ya for sure man, hit em up before you go online. But bb bastard is all good for ordering online. Im fortunate enough to play with a supplier for Metal tech mfg, so no online pour moi.:D

Check their product out too. I switched from bb bastard to MT due to better performance.

Ohh la la, good to know, prices on their .28's? I don't know if you can beat bastards price. Or can you ;)

MT doesn't make 0.28's.

here s the site check it sometime.

http://www.mtmfg.ca/index.cfm?aid=mtjs

also maybe try signing up on the airsoft kelowna forums. good deals on there too.

http://www.airsoftkelowna.com/

Thanks guys, my favorite part about the site, is the friendly people, and their willingness to help, and k town, your a great example of the awesome people on here.

Ya, maybe. One of my bored things is to shoot the plastic coat hanger that hangs above the sink in my basement, is 30ft away, and I usually hit it 2-3 times out of 10 shots. I love my KSC MK23 with the suppressor on fired in double action mode, super accurate and deadly silent! Haha

be aware that this will improve FPS more than accuracy. 6.01mm are not designed for accuracy increase. go with a 6.03 (preferably prometheus) to 6.05mm (PDI) barrels. KM makes good 6.04mm barrels as well. Also, Madbull is supposed to make good barrels. as well. as for the OP, this can apply to your issues as well.

cheers! no worries man.

meh! too late it's in the mail, but good to know!

Haha, i think this is the most useful thread I've created. Another question, would STAR plastic 105 round original AK-47 Magazines fit in my 74u? I'm in the process of buying them from a fellow ASC'er, just wanted to make sure.

yep they will fit! and after a bit of googleing i found many people that find the pdi 6.01 wayyy better in conscistency/accuracy than prometheus/laylax barrels... :confused: meh! i'll try the pdi 6.01 and let you know the results in another thread!;)

That's quite possibly the problem right there. Crossman make horrible BBs and I've heard a lot of horrible things happening when someone decided to try them out in an AEG.

Is it worth it to have to send your gun in for repairs because you were too anxious to wait an extra week for some to come in from Bastard or somewheres? This is the question I face whenever I run out of quality BBs. :(

you're not getting me here.

when I say "best", it means ABSOLUTE best. I had a Prometheus 6.03mm tight bore(Best for AEG), Guarder Hop up rubber, Laylax strike chamber, Marui Hop up unit. And cleaned barrel until there was not a single micrometre of dust was left. Then I used Excel 0.25g BBs, or Metal tech 0.25g.

it cost me like $200 to get to that kind of accuracy and consistency, don't assume that a china clone gun can get that kind of performance out of the box(With Crosman BBs, seriously?).

It was all i had, And i needed to test it out, no need to come in here making fun of equipment and such. I'm buying BB bastards ASAP.

He wasn't. He was just destroying any possible thought you might have that your gun would perform that accurate without serious work.