Brocock Bantam Sniper HR – Information thread

Forums PCP Airguns Brocock Bantam Sniper HR – Information thread

  • Views : 9152
  • Link

    DHart
    Participant
    Member

    First off… how about a look at this cool rifle, the concept conceived by Airguns of Arizona and built by Brocock. Mine shown with Aztec Emerald 5.5-25×50 FFP Illuminated Reticle scope.  

    The magnificently shrouded barrel makes this rifle incredibly quiet – so quiet that you may not even choose to add a moderator to it, though it is ready to accept a standard 1/2" mount moderator.

    Those of you who have this rifle, if you would, please contribute to this thread.

    I have a few questions to start things off. EDITED, subsequently, to provide some answers.

    1) I believe there are six power levels selectable – does anyone know the approximate power levels (by percent?) at any of the five settings below "full"?  My understanding is that from the factory, the full power level on the .22 model gives 32 fpe?  Any idea what the other settings give, power-wise?

    2) When the lower power levels are dialed into the power control, is there any conservation of air used?  Or does the power level simple reduce the amount of air going down the barrel behind the pellet?  (I've heard some say that there is no savings in air usage and others say that there is air conservation – a higher shot count when using reduced power.) ROBERT of AoA tells me that the lower power settings reduce velocity but do not significantly conserve air.  The Huma reg, however, makes the shot count on this amazing.  On full power, I'm getting over 160 shots on a fill (from 240 bar down to 150 bar)!

    3) Adjusting/Reducing air pressure to the regulator: I've heard that reducing air pressure to the regulator directly, while there is air remaining in the bottle, will damage the regulator and the rifle.  Is this true?  And, is there a safe way to reduce air to the regulator while air remains in the bottle?  THE Huma regulator control screw can be turned clockwise to decrease power when firing the rifle (without pellet).  The moment the rifle is fired, pressure on that screw eases for a split-second, and at that time it can be turned momentarily.  Be ready, with the screw driver in place with slight clock-wise pressure, at the moment you discharge the rifle (without pellet).  Repeat as desired. To INCREASE power, the screw can be turned Anti-Clockwise at any time.

    4) Picatinny rail – is it pretty much necessary to mount a scope to the picatinny rail? Or can one just attach scope rings directly to the 11mm dovetail on top of the receiver?  SOME people mount directly to the 11mm rail (not using the picatinny rails) and use high mounts.  Others use the picatiny rail with low mounts.

    5) Chrony results: if anyone can provide crony results with the gun at factory settings, please do so.  If possible, including some or all of the different power levels?  MINE was choreographed at AoA with 15.89 pellets giving an average of 911 fps.

    6) I've read that the hammer spring adjustment should be locktite secured after making a desired setting – is there any locktite on the hammer setting when the gun is in factory condition?  THERE seemed to be a bit of locktite on my adjustment screw, but it was easily broken with pressure turning the screw.

    Any insights that might be shared in this thread would be much appreciated. (I'm picking up the Bantam Sniper .22 HR that I purchased at AoA tomorrow! Can't wait to shoot it.)

     

     

    Link

    TerryE1
    Participant
    Member

    Hope this helps:

    Link

    Rico_navy1
    Participant
    Member

    Great questions, I really hope we get some good answers to those. I just ordered mine in .22 it's supposed to be here Thursday. It will be my first pcp ever. Planning on using it for backyard plinking, and squirrel control. I need the extreme accuracy because I do not have safe backstop, being in a residential area. I'm using a feeding station with 2 4'x4' plywood sandwiched together, with a thick piece of rubber on top to help control ricoshets. I will be spending my time weighing, and sizing pellets till it gets here lol. 

    Link

    L.Leon
    Participant
    Member

    Rico_navy1

    I just ordered mine in .22 it's supposed to be here Thursday. It will be my first pcp ever. Planning on using it for backyard plinking, and squirrel control. I need the extreme accuracy because I do not have safe backstop

     

    Extreme accuracy and a safe backstop are not mutually exclusive. You need a safe backstop for shooting a 30 FPE air gun or any gun for that matter. How about ricochets, pass-throughs, etc. Seems like a quick way to alienate your neighbors and get in to trouble with law enforcement. Good luck with the Sniper, I want one.

    Link

    Rico_navy1
    Participant
    Member

    Fully understand the need for good backstop hence the plywood set up. I have a 22 springer shooting at about 800-890 fps with various pellets. And also a fence behind all that. The rubber pretty much eliminates ricoshets and nothing has made it through the 2 plywoods so far. My issue was the springer was all. Over the place this creates an issue with getting clean kills on the squirrels. I can't always gaurentee shot placement with the springer, and an injured squirrel takes off immediately , and leaving my safe back stop. I have permission from my neighbor to shoot on thier property, but I would rather not chance a wounded squirrel around. So I would like a rifle that I can count on to give me those 1 shot kills. I'm only shooting 20 yards and was shocked at how inaccurate the springer was. I will also be mounting a donny sumo on it to keep noise down. I'm a regular shooter at 300 yards with my 308, so I'm used to recoil and shooting long distances incase your wondering… 

    Link

    Bob_O
    Participant
    Member

    That rifle should be plenty accurate and powerful, if you do your part those ssquirrels don't stand a chance!!

    The Sumo suppressor will make it very quiet.  

    🙂

    Link

    L.Leon
    Participant
    Member

    @rico, did not mean to be negative… good luck with that awesome Sniper.

    Link

    Rico_navy1
    Participant
    Member

    Thanks gents, hopefully next year I will be able to actually get some fruits from my backyard orchard. I have however noticed not much comments on the original posters questions. I'm dying for information on this rifle before it arrives. I've read all the reviews and threads I can fun on this rifle, but not much actual owner experience with the rifle. I ordered my gun from AOA, wonderful customer service. Never thought I would be happy to hear my gun got delayed for shipment till I heard the reason. Apparently they were getting decent groups but not at the level they were used to from this rifle. So while investigating they found some issues with the barrel. So they delayed shipment so they could fix it before it went out. I'm so glad they did this, it will hopefully eliminate a ton of frustration on my end, and not having to return the rifle. 

    Link

    L.Leon
    Participant
    Member

    @rico, it seems you will be our source of information. I want one but have to wait as I exceeded my PCP budget for the year. So post up when you get her in.

    Link

    Rico_navy1
    Participant
    Member

    Lol not sure how valuable my information will be, because this is my very first pcp. I honestly had no idea that this world even existed until about a month ago. I've quite a collection of rare and normal fruit trees in my backyard. This year the squirrels decided they were going to eat EVERYTHING and leave me nothing. Most of these fruits you cannot buy in stores. They are essentially priceless, or the price of a plane ticket to native country. Tried trapping them, feeding them, scaring them, but nothing work. So that's when I purchased my gamo break barrel. While I've managed to take about 10 it was in no way a smooth process. Which sent me on a while goose chase chasing accuracy that landed me with a $1400 air rifle. My co-workers think I'm crazy but if it works out, and I can get some fruits next year it will be well worth it. This will also enable me to get more trigger time to practice baisic shooting skills. It's a pretty expensive process to go to the range with my 308.

    Link

    DHart
    Participant
    Member

    I have gleaned some useful information – mostly from our resident bzizzi373, who approved my reposting his information, posted in other threads:

    bzizzi373

    I reduced Huma reg pressure from the factory set 140 bar down to 120 bar, like other regulated guns I find it easier lower everything down and work up to find the guns sweet spot.

     

    I also backed out hammer tension screw the entire way. To lower regulator pressure, I find it easier to use the following method, cock gun, insert screwdriver into regulator adjustment slot and apply slight CW pressure, fire gun and for a split second screw will turn in easily. To increase pressure just screw CCW.  (NOTE: it may NOT be advisable to decrease regulator pressure -by turning the regulator screw clockwise- when there is pressure in the rifle's air bottle!) bzizzi373's technique, which requires very little force, seems like a good workaround.

     

    I set up my Crony, loaded magazine with JSB Exact 16 gr pellets, to my surprise, velocity was 885 fps, gun was easier to cock, quieter and not so jumpy when fired. Did a 20 shot string and velocity varied about 12 fps, SO… I increased Huma reg pressure to 125 bar, gave hammer screw half a turn in and did another shot string. Velocity remained the same but shot to shot variation was reduced dramatically, I'm talking only 5 FPS over a 20 shot string.

     

    With gun dialed in to my liking, I now set up a target at 40 yards, loaded up magazine again with JSB 16's and shot several 5 shot groups. Guess what, no more flyers, I then loaded magazine with 18 gr JSB's and velocity was 855 fps and same accuracy results.

     

    Just for fun I loaded up magazine with 14.34 gr JSB Exacts and velocity was 910 fps and same result as far as accuracy.

     

    One more side note, when I received Bantam from AoA Trigger pull was just under three pounds, I was able to adjust to one pound with the slight turn of the sear engagement screw. (1.5mm allen key)

     

    bzizzi373

    I have owned my Brocock Bantam Sniper HR .22 for well over a month now and here are a few of the things I did to make gun even better.

     

    * Adjusted trigger from almost three pounds to just under one pound (1.5mm allen key)

     

    * Put Blue removable Lock Tite on hammer tension adjust threads to lock into place after adjusting to desired power to eliminate flyers and other accuracy issues. (Still able to adjust screw but will not move on it's own)

     

    * Set Huma Regulator from 130 bar to 145-150 bar to increase power and reduce regulator response time.(Can now rapid fire w/o effecting accuracy)

     

    Lubricate bolt with moly paste to eliminate notchy bolt cycling and not always advancing magazine to next pellet because of binding. (Made a huge difference) Tried several lubricants, and moly paste worked the best. (NOTE: go VERY easy with the lube.  BZIZZI created some problems associated with the lube – see his comments, below.)

     

    * Added a DonnyFL Tatsu to really quiet shot report and keep OAL to a minimum.

     

    * Machined and added a larger diameter bolt handle to aid in ease of cocking. (After lubing bolt this may not be necessary but sure is nice)

     

    Doing all of the above made an “ok” PCP into a really high quality, accurate PCP that is much more enjoyable to shoot. Power is set to shoot 15.9 JSB Exacts at 920 FPS while getting close to 100 shots from a 240 bar fill. This is now one of my all time favorite PCP's !

     

    bzizzi373

    So I was shooting some groups with the Bantam Sniper and was getting erratic groups, I know what this gun is capable of and something was definitely wrong. First thing I did was clean the bore, this did not correct the problem, next thing I did was shoot over the Chrony and this revealed a problem right away, my velocity was all over the place, from 920 FPS to 885 and everything in between. I am accustomed to being within 3-4 FPS consistently, next thing I did was check the probe O ring and no air seemed to be leaking by. Next thing was transfer port seal, gun was too new for this so before tearing down I moved on to the next possible cause. I removed action from stock, removed hammer tension screw and spring, removed the hammer and it was contaminated with lube.

     

    The number one rule with any mechanical PCP is never ever lube the hammer weight.

     

    This was my fault for lubing bolt too much and after shooting a couple of tins of pellets the lube migrated down into the hammer weight. I cleaned up everything with isopropyl alcohol inside and out, cleaned up any excess lube from bolt shaft, Reassembled everything else, Shot over chrony again and velocity consistency has returned to normal as well as accuracy. 

    =====================

    MANY thanks to bzizzi373 for sharing his experiences with the Bantam Sniper HR.

    Link

    DHart
    Participant
    Member

    I picked up my Bantam Sniper HR .22 today and it had been set-up by AoA with the Huma regulator pressure set at about 150 BAR.

    AoA's test chrony gave an average velocity of 911 with JSB 15.89 Exact pellets, for an average energy of 29 fpe – plenty for my purposes with this rifle.

    I ran about 115 pellets through it this afternoon.  Everything ranging from 15.89 to 18.19 gr to 21.14 gr H&N to 25.39 gr Monsters.

    Groups were pretty erratic for the first 95 rounds or so, but the last 20 rounds or so had groups that were tightening up.

    I tried to clean with a pull through, but could not get it past the inner chambers and no straw I could find was small enough to enter the bore.  The owner's manual recommends cleaning by shooting a felt-pellet saturated in a bore solvent – so that's what I did. I have no idea where I will be able to find a straw small enough to go in the bore to allow me to feed a pull through string.  It's opening is tighter on this Brocock than the .22 caliber bore on my Red Wolf.

    Robert of AoA advised me that with a 150 BAR Huma regulator setting and with JSB 25.39 Monster Re-designed pellets, the rifle should be a tack-driver, once it is broken in.  I'm hoping that I can drive tacks with the 15.89 and 18 gr. pellets, as well.  He also told me that the lower power levels on the rifle will not necessarily conserve air usage from the tank, but will reduce the power – useful for situations where greater power might be destructive to the immediate environment (like pest elimination from permissions).

    For my 35 yard paper target range, I would like to dial down the power (making the gun ever quieter and the cocking effort lighter) and shoot the 15.89 gr pellets for greater economy. That will be one of my goals with this rifle. I also have a Red Wolf .22HP for times when I want a lot of power.  I intend to shoot the Bantam Sniper HR mostly for lower power, with lighter pellets.

    Trigger pull felt good, but heavier than I am accustomed to.  I will lighten the trigger pull, though I had no problem using it as it was.  My other rifle is a Red Wolf with an electronic trigger pull that feels like about 9 ounces, so anything compared to that incredible trigger would feel a bit heavy.

    Cocking effort was stiff and heavy (again, it felt especially so to me, as compared to my other rifle – the Red Wolf), but over the course of 115 rounds, it began to feel smoother.  I expect that after another few hundred rounds, the action will feel really nice.

     

    Link

    DHart
    Participant
    Member

    Bantam Sniper HR .22 caliber breech O-ring size?   My guess is that it will be the same size as the Red Wolf .22 breech O-ring.

    If you don't have any spares, you need to get you some – one day before long, you're going to need 'em.

    Oringsandmore. 1.5mm x 5mm Viton

    http://www.oringsandmore.com/viton-fkm-o-ring-5-x-1-5mm-price-for-10-pcs/

     

    theoringstore.com.  1.5mm x 5mm Viton

    https://www.theoringstore.com/index.php?main_page=product_info&cPath=368_65_69&products_id=2936&zenid=958a36d430ac9a8ce9502e4191281557

    Link

    Deleted Account

    Dhart, any idea of the size of the breech o rings for the .25 Bantam?  And you’re right if you own a Bantam you will need breech o rings. Luckily they’re easy to replace. 

    Link

    Deleted Account

    Dhart, this was a great idea for a thread, thank you.  Here’s a review by Giles of the Commander and the Sniper. 

    Link

    bzizzi373
    Participant
    Member

    O ring for .22 looks like a 009 size, McMaster Carr has an excellent variety of quality O rings. I use Viton O rings 

    Link

    bzizzi373
    Participant
    Member

    If your going to tune the Sniper to your liking I would invest is a good quality set of metric Allen keys, I have L shaped set but really like these ball driver type. Also source from McMaster Carr but Amazon also has 

    Link

    bzizzi373
    Participant
    Member

    Here is the maintenance sheet that came with my Sniper, take note of line on bottom labeled Lubrication, this tells you about lubing bolt shaft and keeping lube away from hammer and striker and how this will adversely effect accuracy. I used moly paste, moly will imbed into the steel and stay put, other lubes seem to just wipe away. Very little is needed to smooth out cocking cycle.

    Link

    Rico_navy1
    Participant
    Member

    The thread is taking off now, great information guys keep it comming. 😁

    Link

    bzizzi373
    Participant
    Member

    From a 230 BAR fill, 18.1 JSB Exacts, I need to get my tanks filled Gun can be filled to 240 BAR. If I filled to 240 BAR I would see a very consistent 85-90 good shots at this setting.The Huma Regulator does an amazing job at keeping velocity pretty consistent. Shot number 1 @892 , gun was filled and sat overnight, no shots where fired to stabilize regulator like I do with my Crown. If someone wants to do the math and calculate energy, and standard deviation be my guest.

    Shots   1-20    892-882-883-886-886-880-885-881-883-890-883-881-883-880-882-878-881-880-884-881

    Shots  21-40   881-884-879-881-884-878-886-881-887-885-885-882-885-883-880-884-875-876-878-878

    Shots 41-60    884-882-882-884-881-883-881-882-880-880-883-882-879-876-879-877-880-879-877-878

    Shots 61-80    880-883-878-880-877-879-879-883-876-874-878-880-872-873-873-874-871-868-862-865

Viewing 20 posts - 1 through 20 (of 217 total)

You must be logged in to reply to this topic.