Accuracy issues with new Brocock Bantam sniper xr.

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Blejda

Blejda

Member
Jul 22, 2019
776
53
Slovenia, Slovenia
Hello

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Few days ago i received this rifle in .22 cal.It looks nicely made with good materials and great machining work.

But from previous pcp experiences i expected better accuracy.After mounting my Element Helix scope on Spotsmatch rings i put five cleaning pellets thru the barrel.This is my usual procedure wih new rifles and it seems to work for me.I also adjusted second stage on the trigger for lighter pull weight.

I began testing for accuracy.Those were my groups after around 100 shoots to let the barrel lead in.

The distance was 35 m(38y).All 5 shoot groups.One target using magazine and one using single shoot tray.Jsb 18.13gr.

IMG_20210829_191100.1630343786.jpg


This is from 50m (54y)

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This were 7 shoots at around 60y maybe a few more i don't remember exactly.

The lower shoot was also part of the group.It measured over 2 inches.Jsb 18.13gr.

IMG_20210829_094349.1630344613.jpg


That last one was from 91m (100y).This were 10 shoots.3 of them landed in the same hole.Also there is one on the lower edge of the target.

This group measured 11cm or around 4 and a half inches.

IMG_20210829_094326.1630344774.jpg


All groups were shoot in light wind conditions with rifle on a bipod and hand for rear rest.

I must say that rifle is very consistent,around 10 fps spread with JSB heavys from around 830-840 fps.

I removed the barrel today to take a closer look and it looks very good and clean.It is very nicely finished like it was polished without any imperfections the crown also looks perfect.Here are some pictures taken from my phone i know they are not great.I have seen some bad barrels and that doesn't look like one of them.

IMG_20210830_172726.1630345454.jpg


IMG_20210830_172831.1630345499.jpg


IMG_20210830_172842.1630345541.jpg


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What do you guys and maybe some girls think about that accuracy?

I must say i can shoot my Taipan Veteran short .25 consistently around 1/2 inch groups at 50 m and it is much harder to hold steady than this Brocock and has more recoil.

Regards Marko


 
I'm having same experience with my Commander XR. I really don't ink Brocock makes accurate guns.
Click to expand...

I didn't hear anything like this before only good reviews from Brocock that is why i bought it.Sorry to hear that.

IF the problem is the barrel it is LW to blame but also Brocock for leting rifles like that go out of the factory.At that price range all pcp's have to be tested in factory in my opinion and shouldn't go out untill they are shooting like they should.

Regards Marko.
 
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@Blejda I own one in .25 and it’s a pretty accurate gun from my experience and watching other members’ videos and photos. I believe yours is a little different because the .22s are supposed to have a hamerless slingshot system. I have no experience there, but I’ve asked another experienced member to chime in. Hopefully he responds soon. A little more info maybe helpful in helping you solve your issue. 


I don’t know the meter to yards conversion off the top of my head, but what do your groups look like at 25 yards? Also, which power setting(s) are you shooting from? Can you provide any chronograph numbers for the speed of the pellets you’re having accuracy issues with?
 
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I think you might be rushing to the decision that the rifle isn't shooting well. I would thoroughly clean the barrel, from the breech end, using a good rod and brush, then start over. I would also try it without the silencer, and with a different lot of pellets. I assume it is a proven scope.
Click to expand...

Hi elh102

Scope was taken from my Impact .30cal with which i shoot ragged hole group at 50m day before.I was testing with three differen't pellet lot of Jsb 18.13 also many other pellets.I did remove the barrel to see if it is dirty or if it has some imperfections but it looks very clean and shiny.

I am waiting to get cleaning rod long enough to push pellet thru the barrel and see how the pellet will look after that.Then i will clean the barrel with brush and patches with balistol but i don't have high hopes.

Regards Marko
 
Upvote 0
@Blejda I own one in .25 and it’s a pretty accurate gun from my experience and watching other members’ videos and photos. I believe yours is a little different because the .22s are supposed to have a hamerless slingshot system. I have no experience there, but I’ve asked another experienced member to chime in. Hopefully he responds soon. A little more info maybe helpful in helping you solve your issue. 


I don’t know the meter to yards conversion off the top of my head, but what do your groups look like at 25 yards? Also, which power setting(s) are you shooting from? Can you provide any chronograph numbers for the speed of the pellets you’re having accuracy issues with?
Click to expand...

Hi Ezana4CE and thanks for response.

I have also written distances in yards.I am not saying all Brocock are like that.That is just my experience with this particular rifle.

Jsb 18.13 are shooting at 830-840 fps very consistent.

At 25 yards i am getting one ragged hole with some flyer just a little out but longer ranges is where accuracy falls apart.

I have my power adjuster at max open setting.Even so the speed isn't great.

Regards Marko
 
Upvote 0
I'm having same experience with my Commander XR. I really don't ink Brocock makes accurate guns.
Click to expand...

ADFFE1E1-D754-45D4-86CA-EA3D0AEE3E6D.1630350361.jpeg

My Bantam would beg to differ... 40 yards first target four in one hole I blew the fifth...

@rsfrid, Sometimes the shooter is to blame. I know the accuracy of my two Brococks is great and have documented them. To the OP your groups don’t look so bad considering you are using your fist as a rear rest. When I first got my Compatto I expected to shoot great groups right out the box. The gun was capable me as the shooter? Not so much, it took time and good technique and lots of shots down range. Get a solid rear rest and check your technique as you send them down range. Doesn’t matter you shoot other guns better, at the moment you have to get better acquainted with your Bantam.


 
Upvote 0
I'm having same experience with my Commander XR. I really don't ink Brocock makes accurate guns.
Click to expand...

I didn't hear anything like this before only good reviews from Brocock that is why i bought it.Sorry to hear that.

IF the problem is the barrel it is LW to blame but also Brocock for leting rifles like that go out of the factory.At that price range all pcp's have to be tested in factory in my opinion and shouldn't go out untill they are shooting like they should.

Regards Marko.
Click to expand...

That would be ideal Marko, but it's just not going to happen with most production rifles. I can't tell if that air stripper screws onto a threaded muzzle, or if it slips on and held with a grub screw. If the muzzle is threaded, that could be the source of your issue. The barrel that came on my Red Wolf was threaded for the stripper, and wouldn't shoot. AOA replaced it with a non-threaded barrel, and it shoots great. I don't know if LW threads the barrel before finishing the choke, or if it's a blank that Brocock threads. The potential problem with threading a finished barrel, it is prone to change the internal bore dimensions at the muzzle, and kill accuracy. If it doesn't come around after a good cleaning and some more shooting, you might want to pursue a replacement barrel.

Ed
 
Upvote 0
I'm having same experience with my Commander XR. I really don't ink Brocock makes accurate guns.
Click to expand...

ADFFE1E1-D754-45D4-86CA-EA3D0AEE3E6D.1630350361.jpeg

My Bantam would beg to differ... 40 yards first target four in one hole I blew the fifth...

@rsfrid, Sometimes the shooter is to blame. I know the accuracy of my two Brococks is great and have documented them. To the OP your groups don’t look so bad considering you are using your fist as a rear rest. When I first got my Compatto I expected to shoot great groups right out the box. The gun was capable me as the shooter? Not so much, it took time and good technique and lots of shots down range. Get a solid rear rest and check your technique as you send them down range. Doesn’t matter you shoot other guns better, at the moment you have to get better acquainted with your Bantam.

Hi Luis

i Know yours is great .

I just know it isn't me.I shoot over 500 pellets thru it already and some of the groups were also rested on the rear side with bipod on the front.The group sizes were roughly the same.When i shoot that 100y group i was rock steady on center didn't even move my eye of the scope for cocking the rifle between shoots but pellets were landing all over the target.

That reminded me of one post that i read a day or two ago about Delta Wolf .22 terible accuracy.

I will let you guys know if i could solve the mistery.

Regards Marko

Click to expand...


 
Upvote 0
I'm having same experience with my Commander XR. I really don't ink Brocock makes accurate guns.
Click to expand...

I didn't hear anything like this before only good reviews from Brocock that is why i bought it.Sorry to hear that.

IF the problem is the barrel it is LW to blame but also Brocock for leting rifles like that go out of the factory.At that price range all pcp's have to be tested in factory in my opinion and shouldn't go out untill they are shooting like they should.

Regards Marko.
Click to expand...

That would be ideal Marko, but it's just not going to happen with most production rifles. I can't tell if that air stripper screws onto a threaded muzzle, or if it slips on and held with a grub screw. If the muzzle is threaded, that could be the source of your issue. The barrel that came on my Red Wolf was threaded for the stripper, and wouldn't shoot. AOA replaced it with a non-threaded barrel, and it shoots great. I don't know if LW threads the barrel before finishing the choke, or if it's a blank that Brocock threads. The potential problem with threading a finished barrel, it is prone to change the internal bore dimensions at the muzzle, and kill accuracy. If it doesn't come around after a good cleaning and some more shooting, you might want to pursue a replacement barrel.

Ed
Click to expand...

Ed

That air stripper looks to me like it is pressed onto the barrel.It doesn't have any screws and i tried to loosened it with alot of force and if it would have been threaded to the barrel i think it would loosen but it didn't.

I will try to clean barrel very good even if it looks like that already and just shoot it alot and see how it goes.If things don't improve i will send it back for warranty check up.

Thank you

Regards Marko
 
Upvote 0
@Blejda I own one in .25 and it’s a pretty accurate gun from my experience and watching other members’ videos and photos. I believe yours is a little different because the .22s are supposed to have a hamerless slingshot system. I have no experience there, but I’ve asked another experienced member to chime in. Hopefully he responds soon. A little more info maybe helpful in helping you solve your issue. 


I don’t know the meter to yards conversion off the top of my head, but what do your groups look like at 25 yards? Also, which power setting(s) are you shooting from? Can you provide any chronograph numbers for the speed of the pellets you’re having accuracy issues with?
Click to expand...

Hi Ezana4CE and thanks for response.

I have also written distances in yards.I am not saying all Brocock are like that.That is just my experience with this particular rifle.

Jsb 18.13 are shooting at 830-840 fps very consistent.

At 25 yards i am getting one ragged hole with some flyer just a little out but longer ranges is where accuracy falls apart.

I have my power adjuster at max open setting.Even so the speed isn't great.

Regards Marko
Click to expand...

My apologies for the redundant questions. I didn’t realize that the JSB18.13 grain pellets are the Heavies. I didn’t realize that until you posted your numbers again. I hope you can get to the bottom of the issue. The 35m groups don’t look too bad. I’m saying that with no idea of what your abilities as a shooter are. If you’re shooting off of a plastic table or something not so stable, with a bipod, and no solid rear bag or rest then I’d say it looks like you’re doing ok there. Where’d you purchase your rifle?
 
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Marko, I second what @ranchibi, said. My Bantam the reg is at 150 bar, TP on highest setting sending JSB Exact Jumbo 18s at 875 fps. Also, one tin of pellets down range is no where near enough trigger time to get to know any particular PCP. My accuracy with the Brococks comes from thousands of pellets down range. Otherwise both gun are as they came out the box.
 
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Give it time and keep putting pellets through it. My .22 Sniper XR kind of sucked when I first got it. I think the LW barrels are made of harder steel or something. Mine took a while to break in. And the factory mag actually needed a break-in period too. I bought some CARM mags and my accuracy instantly improved. Then I saw a video where the guy chamfered the exit hole for the factory mag and his accuracy got better. I did the same thing and so did mine. I probably have about 800 pellets/slugs through it now and it’s a laser beam. I’m hitting ground squirrels at 100 yards with the Howler slugs consistently. And the Huma reg is awesome.
 
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Play with your speed. I have two guns that when I slow the 18.1’s down too slow, the groups open up just like when I make them too fast. The key words are open up. The gun still shoots good but when you find the right speed it shoots better. That sniper looks like it has a long barrel. Bump your speed up a little to get more dwell time and see if your groups improve. Your gun looks accurate just sitting there. I like Brocock rifles. Ergonomically they have things figured out.
 
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I agree with what others have said. Definitely need to get your speed up. I surprised it's shooting 18.1gr that slow out of the box. Is your power adjuster on the highest setting? If so, it sounds like you need to do some hammer spring tuning. If that doesn't do it, you may need a reg adjustment. Start by turning in the hammer spring 1/4 turn at a time and measure your velocity (assuming you have a chronograph). At some point, you should see it start to level off. Back it off just a bit behind the point where it levels off. If you don't have a chronograph, just shoot groups after each adjustment. You should see them close up as you increase your velocity. Your gun will also most likely sound different. At some point, it will start to sound "violent" in the shot cycle. (It's hard to describe the difference, but it's noticeable.) If you get to that point, you've probably gone too far. If you do adjust the spring, I strongly suggest measuring how deep it is, removing it completely, applying blue loc-tite or vibratite and putting it back in at the same depth as before. The spring adjustment has the tendency to creep if you don't.

This is around where I have my Commander XR 22 cal tuned... the turns are measured as revolutions from the flush point of the breech block. I'm tuned for 25.39gr instead of 18.1 gr. I've upped my reg a bit since taking this data, but I'm on the knee of the curve as shown below. I getting about 907fps on average with 25.39gr.

hammer spring curve Screenshot from 2021-08-30 17-44-36.1630359970.png


-Clayton


 
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