Brocock Bantam Sniper HR – Information thread

Forums PCP Airguns Brocock Bantam Sniper HR – Information thread

  • Views : 9046
  • Link

    L.Leon
    Participant
    Member

    @onehitwonder, 200 pellets through is not many at all. That said the gun is capable of way better accuracy than 1.5 inches at 45 yards. You stated you tried different pellets, cleaned barrel, etc. Check scope mounts, rings, scope. The gun can certainly shoot better than you are experiencing, keep us posted.

    Link

    OnehitWonder
    Participant
    Member

    Well… AOA just tell me to crank on it if I want to adjust it.  So I did.. moved from 3.1mm to 2.05 mm from flush.  It required a lot of force…  haven’t had time to shoot groups but the test shots are a bit calmer. Jsb Kings are going out at 900 max power. 

    still, cranking on that bolt doesn’t feel quite right. I hope they sell replacements!

    Link

    L.Leon
    Participant
    Member

    OnehitWonder

    Well… AOA just tell me to crank on it if I want to adjust it.  So I did.. moved from 3.1mm to 2.05 mm from flush.  It required a lot of force…  haven’t had time to shoot groups but the test shots are a bit calmer. Jsb Kings are going out at 900 max power. 

    still, cranking on that bolt doesn’t feel quite right. I hope they sell replacements!

    Maybe there’s some locking compound on the threads? Heating with a hair dryer might help it turn easier.

    Link

    OnehitWonder
    Participant
    Member

    I don’t think it’s thread lock compound.  When I first loosen the grub screw, there’s some play to the adjustment screw. It gets stuck on the thread damaged by the grub screw.

    Link

    bzizzi373
    Participant
    Member

    With the FX 600mm Smooth Twist X liner installed on my Bantam Sniper HR I am now pushing 25.4 JSB Exacts Jumbo Monster Redesign @ 900 FPS and dime size groups @ 75 yards. Anyone interested in the drop in kit just PM me. I also have a 500mm kit in the works to maintain stock length.

    • This reply was modified 7 months ago by bzizzi373.
    Link

    NZTony
    Participant
    Member

    Hi, OnehitWonder,  are you based in New Zealand? Would like some info on the brocock bantam patagonia. 

    My email is [email protected] 

    Thank you. Regards, Tony. 

    Link

    Xring2005
    Participant
    Member

     There’s a lot of mention about 140-150 reg settings for the 22 cal sniper here but I wanted to show what can also be had with lower pressures. This 50-shot group was shot consecutively with a lower 120 reg prior to winter squirrel season. Not sure the hammer spring tension but 5mm screw was not flush with back of the action (I since moved it and did not measure prior 😬) . Chrony speeds were around 830 with the 16gr. I was getting around 8-10 mags when filled to around 230bar. Since then I have increased reg pressure to 140’s and increased hammer spring tension to experiment with heavier pellets. Hopefully the 25gr pellets will have a little more stopping power on my organic food supply! 😁 If I find a good formula, I will post the settings for others to reference. Happy squirrel sniping!

    Link

    L.Leon
    Participant
    Member

    That is fantastic accuracy, I am interested in your results with the 25 grain pellets.

    Link

    gunnerf250
    Participant
    Member

    has anyone shot these in the magnum version and tested with slugs im leaning towards this gun because it is simple to tune and shoots hot and does not cost more then 2k

    Link

    Hoytwon
    Participant
    Member

    I have the HP version in 22 cal it is very accurate with the redesigned's from jsb, I have tried a few NSA slugs in 22 grains 217 size, accuracy was not that great!!! Of course I did not want to mess with my guns settings as it perfect for the jsb's!!!

    Link

    dreamweaver
    Participant
    Member

    I bought the HP version back in November from AoA and have 2,000 or so rounds through it.  It has the polygonal barrel.   Accuracy really started improving after about 500 pellets or so.

    One thing that wasn't clear to me was the power adjuster.  Most early video reviews said it was a 6 position.  It is in fact a 4 position.   I called AoA after getting mine and they said that the early production ones were in fact 6, but that feedback was that was too many and switched to 4.  For my purposes…..target shooting in my back yard, 4 is plenty.

     

    I've ran many different weight pellets over the crono at different power settings. To give you an idea of the speed at the different power settings, spanning the weights of the JSB diablo pellet family specifically, this is what I was getting.  Reg and HS were left at what AoA sent it at….155 bar on the reg:

    Weight     Power Setting.      Avg fps

    13.43               1.                  710

    13.43                2.                  890

    15.89                 2                  875

    15.89.                3.                  980

    18.13                  2.                 845

    18.13                  3.                 935

    18.13                  4                   985

    25.39                  3                   850

    25.39.                 4.                  890

    33.956.               4                  800

     

    The absolute best accuracy was the 15.89 on power level 2 and the 25.39 redesigned on power level 4.  Dime size groups at 50 yards is the norm.  The 18.13's were very good on both PL 2 and 3, but not as good as those other 2.

    My only small disappointment is with the trigger.  It's not a true 2-stage.  More like free movement followed by a single stage.  I lightened it as much as possible and it's not bad, just not great either.  If anyone has found a way to improve the stock trigger, I'd love to hear it.

     

    I also own a Marauder, so I don't consider this gun quiet.  I added a Sumo and now it's Marauder quiet, if not a little better.

    Link

    Xring2005
    Participant
    Member

    My only small disappointment is with the trigger.  It's not a true 2-stage.  More like free movement followed by a single stage.  I lightened it as much as possible and it's not bad, just not great either.  If anyone has found a way to improve the stock trigger, I'd love to hear it.

     

    I was able to ultimately get my trigger down to 15 oz by simply turning the rear-most screw in ever so slightly. When I first purchased the gun in fall of 2018 it was in the 3-lb range. I adjusted to 1.5 and hunted the gun the entire 18-19 squirrel season with no adjustments.  More recently I made what I think will be the final adjustment and it now breaks at 15 ounces and it is very consistent! Mine clearly has two stages of travel and breaks with no discernible creep. However, the break is not like a tiny rod of glass like that in perhaps a $250 Jewell trigger on a powder burner, but it is very nice. For perspective, my gunsmith really liked the trigger and he has experienced about every trigger group out there. I do wish there was over-travel adjustability but that’s being picky on my part especially since my main use for the gun is harvesting tree rats for dinner.

    Link

    BigB
    Participant
    Member

    Good evening all,

    New member, and new Bantam Sniper HR owner here. 

    After "discovering" the rifle over the past few weeks, I wanted to revive this excellent thread with some first impressions, questions and additional information.
    I thought it best to respond to this thread, instead of creating a new one, since it offered such great assistance when I was researching which rifle to purchase. 

    I opted for the regular Bantam Sniper HR, and not the High Power version, in .22. 

    I felt that approx. 30 ft/lbs of energy were more than enough for my needs, and the overall length in comparison to the High Power also proved beneficial/preferable. 

    I compared the Bantam Sniper HR to a variety of different air rifles in the same price category. However, as it is with everything in life, it is all relative. Residing in South Africa slightly alters one's purchasing reference frame – our currency does not enjoy a strong exchange rate and shipping generally tends to be more expensive (and very much country of origin dependent as additional duty charges, tax, etc. can be applied). This means that a Brocock Bantam Sniper HR is significantly less expensive than a Uragan Compact, for instance. At its specific price point, it is difficult to argue against all the apparent value the Brocock offers.

    Taking the current global situation into account, it would have been a while before we received the new XR versions. I also speculated that they would be considerably more expensive as our currency devalued quite substantially over the past few months.

    In short, I am very much impressed by the Bantam Sniper HR – it seems to be well-made, offering excellent value for money (in airgun-relative terms; jeepers, this is an expensive hobby). I paired it with a Sightron SIII 10×42, Warne QD mounts and a Huma modular moderator. It is remarkably quiet, accurate and precise.

    With the Huma installed, together with the factory shroud, I was amazed how quiet it was at 30 ft/lbs. This was one of my pre-requisites and coupled with the transfer port adjuster they make the Brocock a backyard friendly plinker (on that note, my transfer port adjuster has 4 settings and not 6 as is stated in previous posts). 

    There are some caveats, however. For purchasers outside of the US, it does not come supplied with any picatinny rails (they can be purchased as an optional extra), and an anti-tamper sticker applied to regulator adjuster screw. I.e. “warranty void if removed”.

    This was a bummer, as I believed the adjustability to be a major value-add. 

    Furthermore, the slingshot hammer has been replaced with a more traditional, albeit free-floating hammer and short stiff spring.

    Since both the hammer and spring are free-floated, the rifle makes a spring-binding sound when cocking. It is difficult to describe the sound, and it does not happen constantly, but it is as if the hammer spring catches on the inside of the hammer when the rifle is cocked. I.e. as the hammer engages the hammer spring when the bolt is pulled back, sometimes a "boing" is heard when the spring slips into position. I’m certain this will dissipate with continued use, but it is a bit disconcerting. 

    Another small gripe was the amount of tooling marks on the section of the rifle that houses the regulator and where the bottle screws in. I believe this could have been finished to a higher standard (the finish on the receiver is impeccable). 

    I should emphasize that the above are truly minor gripes. All else being considered, I believe the rifle does offer exceptional value.

    Now for some questions.

    Below is a shot string – I believe the rifle is capable of better. What I find strange is the fact that the velocity decreases before regulator pressure is reached. The final 10 shot string was fired starting with a rifle pressure of 150 bar and ending above 130. 

    Any ideas?

    Is this normal?

    I have also noticed that flyers occur quite often. At 25m 4 out of 5 pellets will go through practically the same hole, followed by a flyer. Pellets were used straight from the tin (potential cause). 

    From previous posts, I believe the regulator pressure should be increased to about 140 bar. 

    For the sake of troubleshooting: Rifle has 750 pellets through it, barrel has been cleaned (twice) and no adjustment of the regulator has been attempted (anti-tamper sticker still intact). The regulator came set at 120 bar, but after around 300 shots settled at 125 bar and has not moved since. 

    The hammer spring adjustment hex screw was turned in (CW) to increase power for 21 gr H&N Baracuda Match, but then reset to the original setting. 


     

    Link

    dreamweaver
    Participant
    Member

    Congrats on your new Sniper Barund.  Maybe a more experienced forum member can answer your question on the FPS drop toward the end of your shot string.  Although I have noticed shot stings for many other regulated guns that have been posted that show a similar pattern.  Maybe this is typical???

    I have the HP version, so lw polygonal barrel.  Yours would have the standard lw barrel, so not sure accuracy comparisons are valid.  Have you tried the JSB 15.89 pellets yet?  I shoot them on power level 2 at 885fps.  They are more accurate than the 18.1 at any velocity out of my gun, which would be 845, 935 or 985 at tp setting 2, 3 and 4.

    Either way, enjoy your new gun.    

    Link

    xyon
    Participant
    Member

    Hi, that string is normal if you have slightly too much hammer. If you back it off about 3 to 5 % from max fps, your rifle will have a flatter string and be more efficient.

    Link

    BigB
    Participant
    Member

    Good morning Dreamweaver – thank you very much for your reply. Indeed, I have tried the 15.89gr JSB pellets. They proved to be very accurate at around 880-890 fps (power setting number 4). The reasoning behind the 18gr was to achieve a bit more oomph in terms of FPE. Since the 15.89gr gave more consistent results at 880-890 fps, I thought this to be the velocity needed for the 18gr. Unfortunately, with the current regulator setting I am unable to bump up the velocity to within this range by just using the hammer spring adjuster. 

    Xyon, thank you for the very interesting comment. I am going to investigate the current combination of regulator and hammer spring setting further using 3 different scenarios.

    1. Current setting with 15.89gr

    2. Decreased hammer spring (3-5%) with 15.89gr

    3. Decreased hammer spring (3-5%) with 18gr

Viewing 16 posts - 201 through 216 (of 216 total)

You must be logged in to reply to this topic.