Gamo Urban Groups (updated info)

[gamoshooter]

  Shot them at 50 and group opened up just a bit  I think they are a bit light for 50 yds

 Going to try the air arms and barracuda match at 50 and see how it likes lead pellets vs gto s

 At 50  most predator pellets seem to shoot well at shorter distances for me for whatever reason

 Gamoshooter

[Ken13]

  Shot them at 50 and group opened up just a bit  I think they are a bit light for 50 yds

 Going to try the air arms and barracuda match at 50 and see how it likes lead pellets vs gto s

 At 50  most predator pellets seem to shoot well at shorter distances for me for whatever reason

 Gamoshooter

How much did they open up?

[avator]

This is just over 33 Yards. 10 shot group using JSB 15.9s.  I haven't tried any other pellet but I feel like this is pretty satisfactory group . I unfortunately pulled 1 shot. The trigger is light but long. I read here you can shorten the 2nd stage by replacing a screw, but I don't remember exactly what it entailed. Can someone help me out?  .
 

Go to a heavier pellet like the JSB 18.1. The Urban likes them heavy at least mine does. I got great groups with the JSB 15.89 but even better with the 18.1.

Agree 100%. This is 10 shots at a measured 35 yds. with EunJin 28.5 domes.

What kind of FPS are you getting with the EunJin 28.5 domes?

I haven't even run it over the chrono yet.

[skorec]

   I really like my urban  pretty good pcp for the price

  Lightweight  quiet  and most of all accurate 

  35 yds  predator  gto  lead free  (non toxic lol )

 Gamoshooter

Unbelievable accuracy for lead free.

[Ken13]

Any other pellet recommendations. I don't think it likes the heavier stuff   

[kzz1kaw]

Have you tried jsb 14.35 mine loves them out to 50 less than dime size group benched no wind the magic pill for my urban. This is my second urban btw. First one shot great out to 30 then the groups opened up out to 50 so I returned it got a nuther haven’t look back since. Keeper now😉

[Ken13]

Have you tried jsb 14.35 mine loves them out to 50 less than dime size group benched no wind the magic pill for my urban. This is my second urban btw. First one shot great out to 30 then the groups opened up out to 50 so I returned it got a nuther haven’t look back since. Keeper now😉

Ah yes, I forgot about the Diabolo express. I'll order those next. Thanks 👍

[toddbrat]

Mine really likes the H&N FTT in 5.53 head size.

[kzz1kaw]

Mine really likes the H&N FTT in 5.53 head size.

How far out have you shot the urban with ftt

[Ken13]

Mine really likes the H&N FTT in 5.53 head size.

How far out have you shot the urban with ftt

+1

[toddbrat]

Here's a 30 shot string I did a couple of weeks ago at my far target, 63 yards using the FTT. I have mine turned all the way down, about 13 turns on the power adjuster if I remember correctly, and only fill to 2k psi. With that setup, I get 30 fairly consistent shots shooting down to about 1200-1250psi. They average about 660 fps for just over 14FPE. Groups were much tighter before I turned it down, I'll have to see if I can find the pics from then. I turned it down simply to use less air, I fill from a SCUBA tank and can get over 100 fills with this setup vs about 15 leaving it turned up. The low shot was right after the fill, I've found if I open the bolt while filling I don't have that odd ball. The upper left shots were all me, I just pulled them. I shoot off a bipod with a rear bag (a sock full of rice). Also, pretty sure I had my scope at 6X that day. Probably more info than you needed but wanted to give some context and let you know I'm shooting way slower than most others. 

[Ken13]

Here's a 30 shot string I did a couple of weeks ago at my far target, 63 yards using the FTT. I have mine turned all the way down, about 13 turns on the power adjuster if I remember correctly, and only fill to 2k psi. With that setup, I get 30 fairly consistent shots shooting down to about 1200-1250psi. They average about 660 fps for just over 14FPE. Groups were much tighter before I turned it down, I'll have to see if I can find the pics from then. I turned it down simply to use less air, I fill from a SCUBA tank and can get over 100 fills with this setup vs about 15 leaving it turned up. The low shot was right after the fill, I've found if I open the bolt while filling I don't have that odd ball. The upper left shots were all me, I just pulled them. I shoot off a bipod with a rear bag (a sock full of rice). Also, pretty sure I had my scope at 6X that day. Probably more info than you needed but wanted to give some context and let you know I'm shooting way slower than most others.

Any info is appreciated! What made you want to turn down the power, other than getting more fills from your tank?

[toddbrat]

Seeing if I could use a lower fill and how many shots it would give me was the #1 goal, I've got a Benji hand pump and it really isn't bad to pump to 2800psi. I tried a few different setups and in the end, this one worked out perfectly. I could honestly use the exercise, but when I get a chance to sneak out back for a couple of hours, I'd rather shoot than pump Plus, I don't hunt, just punch paper.

One of my other enjoyments is long-range shooting, which I don't get to do much of anymore, and this setup actually does a very good job of simulating a .308 at 300 yards ballistics wise with a 29 yard zero on the Urban and 100 on the .308. Drop and drift are very similar--within a couple of inches. 300 isn't very far, but at least it helps keep the form and mechanics in usable order.

[toddbrat]

Had time for 1 quick magazine on lunch today, and danged if there wasn't one outlier in each and they were both the last shots of the strings so more than likely they were me. Here's the 50 yard target, 4 out of 5 in .88 inches, and the 63 yard, 4 out of 5 in 1.5 inches. You can ignore the data on the images, didn't take the time to clean it up and change it but the measurements are correct. 

[skorec]

Todd -  YES, rifle shooting distances are 50+
Why did you shot at so low velocity. Short barrel PCPs like 800-900 FPS.

[kzz1kaw]

Todd -  YES, rifle shooting distances are 50+
Why did you shot at so low velocity. Short barrel PCPs like 800-900 FPS.

+1 do you have a chrony? Try some jsb 14.35 is the magic pill for my urban. I did  try h&n ftt don’t remember the head size. They shot ok not like the jsb covered with a dime😳😎 Did not have at the time of testing the other two head sizes will have to do another test at 50 now that I have all three.

[toddbrat]

Todd -  YES, rifle shooting distances are 50+
Why did you shot at so low velocity. Short barrel PCPs like 800-900 FPS.

My reason was laziness. I have a hand pump and SCUBA tank. With the power turned up, it really needs the higher pressure to shoot well, at least from what little testing I had a chance to do. When using my SCUBA tank to fill, that would only give me around 14-15 fills before I would need to either top off with my hand pump or just use the pump only. With reducing the power, I'm able to reduce the needed fill pressure to start at only 2000psi. That will give me over 100 fills from my tank. I'm enjoying it this way, but it is challenging when the wind picks up. I'm lucky that most of my wind is usually a headwind, very few crosswinds so it does make doping easier, just aim a bit higher. However, when they swirl, it is very challenging. While I like to be as accurate as possible and shoot groups as tight as possible, especially at my far target, I can live with groups around 1.5 inches as I don't shoot competitively, only for fun in the backyard. With that being said, I'm thinking of adding a carbon fiber tank after the first of the year, and if I do the power will be turned back up for sure as I won't have to conserve air as much to avoid pumping.

+1 do you have a chrony? Try some jsb 14.35 is the magic pill for my urban. I did  try h&n ftt don’t remember the head size. They shot ok not like the jsb covered with a dime😳😎 Did not have at the time of testing the other two head sizes will have to do another test at 50 now that I have all three.

I've been using ChronoConnect on my phone and ChairGun. I'm getting pretty close based on the math, at least for my purposes. I'm building a chrony based on an Arduino board, have the frame and code done just haven't found the time to wire it up.  Across the 30 shots I get from my fill, I'm averaging about 660fps for just over 14FPE. Don't remember the ES off hand, but it is tight enough to not see much drop if I do my part. I'm going to add some JSB's in my next order, I've gone through 2 tins of H&N in the last month by not pumping

[Rat Sniper (AKA: PaulT58)]

After seeing all these excellent groups, I'm convinced I have a lemon!  Here's my best at 35 yards, rested, sitting, no wind...  The JSB's are 15.9 gr.

[Ken13]

After seeing all these excellent groups, I'm convinced I have a lemon!  Here's my best at 35 yards, rested, sitting, no wind...  The JSB's are 15.9 gr.

Unfortunately so, don't give up on the Urban though, as you can see they can be quite the shooter 

[toddbrat]

Agreed. Here's a group at 50 yards from before I dropped the power. The flier was my fault.