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BSA r10 (Erratic grouping)

Discussion in 'Anything Airgun Related' started by Stu, May 2, 2012.

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  1. Stu

    Stu Keyboard Hero

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    I bought me an r 10 in near mint condition, i do believe it to be the mk1. I bought a new scope today and had taken it out to sight it but although there was a little bit of wind the grouping were all over the place after adjusting the sights to near as damn it spot on i went on a walk about, never saw a thing so decided to call it a day. Before i went home i tried a few test shots again and they seamed to be out again..... :confused:

    Any idea why? Is it possible to do that or could it have been the wind?
     
  2. 1hunter

    1hunter Banned

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    what are the turrets like do they have caps your grouping should be somewhere handy to this at 35 yards DSCF3031.jpg :)
     
  3. Kwhite1981

    Kwhite1981 Busy Member

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    What pellets are you using in it?
     
  4. essex sniper

    essex sniper Banned

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    could be the wind. are you using the same pellets as the last owner. as the barrel been bent and thats why he sold it . could be a number of reasons mate . i would take it out again set sum targets up and give it a good go
     
  5. Choppo

    Choppo Engaging Member

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    Could be a multitude of things have you put it across a chrono to see if the fps are all consistant. I had a pal who had the same problem with his mk1 and it baffled us for months & in the end after several long nights pithering he sent it to bsa & had a new barrel, regulator & most of the internals from a mk2 put in, all cleaned up & the problem went away.
     
  6. Stu

    Stu Keyboard Hero

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    Yeah chronod when i bought it 10.9
     
    Last edited: May 2, 2012
  7. bazzab

    bazzab Engaging Member

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    I bought an R10 and had the exact same problem. Would be pellet on pellet for few then look like shotgun the next.

    BSA's are renowed for being pellet fussy. no two guns will be the same. So Im afraid its a case of sticking loads of different pellets threw until you find its favourite. The second i found the ones for mine, it cycled better loaded better and was pinpoint accurate. Its a pain but well well worth it buddy. :)
     
  8. Choppo

    Choppo Engaging Member

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    Also what style of mag do you have new or old as my mate also had his mag changed as it was clipping the skirts of the pellets.
     
  9. Stu

    Stu Keyboard Hero

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    Just had it tested on my "private grounds" and after 3 group tests what im finding is they are grouping around an inch sq but an odd shot will go well amiss like 4, 5 inch wide maybe 1 or 2 shot will go where the hell they like :confused:

    Im not to pleased with the mag its seams old a sticky and not sure if its old or new style
     
    Last edited: May 2, 2012
  10. Kwhite1981

    Kwhite1981 Busy Member

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    The new style mags will have a red or blue band depending on caliber,red for .22 blue for .177,if it's a mk 1 your probably using the old style mags,sounds like you might want to try some different pellets through it mate and give the barrel a clean as well.

    Diabolos work brilliantly in mine but as said before they can be pellet fussy,other brands worth having a go with would be rws superfields or superdomes, bisley superfields,jsb exacts and defiants have all worked well in mine,and if it's .177 bisley magnums work well as well from what I've heard.
     
  11. nick2

    nick2 Keyboard Hero

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    You could try removing the "ported thread protector" (as BSA call it) & the baffles out of the shroud, just to eliminate clipping. Mine was much more consistent once I ditched the shroud. Many .177's prefer the heavier pellets, bis mags, baracuda match or as I am using at the minute Daystate heavies.
     
  12. Stu

    Stu Keyboard Hero

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    Its a 22 buddy, i have just further tested it at 4/5 yards and still a strange out come....

    Far right of the 3 groups at 6 yards they seam all over (maybe the gun was not tight enough in its stance)

    Middle grouping at 4/5 yards a lot more together and gun held firmly tight

    Far left gun held firmly tight at 4/5 yards, notice the shot bottom left its just went where it wanted :confused: to say the least

    All grouping 10 shots and these were not shot through the scope
     
    Last edited: May 2, 2012
  13. Stu

    Stu Keyboard Hero

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  14. essex sniper

    essex sniper Banned

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    sounds like your pellets mate . i use h&n ftt in my aa s410 but r10 dont like em try bisley mags if your .177
     
  15. Kwhite1981

    Kwhite1981 Busy Member

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    Was the rifle rested when you shot those groups?
     
  16. Stu

    Stu Keyboard Hero

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    Yeah 4 5 yards

    Plz dont take much notice of the far right group as the gun wasnt held tight enough
     
    Last edited: May 2, 2012
  17. Stu

    Stu Keyboard Hero

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    Any further ideas guys
     
  18. The Robin

    The Robin Super Moderator Staff Member Mod/Admin

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    Try different pellets, see what other pellet are using and have another go.

    Check scope is not moving, loose or creeping

    Is it some how clipping the shroud?

    It could be a reg problem with some shots good and then all over the place again
     
  19. keeprightontilltheendoftheroad

    keeprightontilltheendoftheroad Big Poster

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    Stu contact XTX on here this isn't uncommon with R10's. He will let you know best ideas as he has sorted hundreds of R10's over the years.
     
  20. The Robin

    The Robin Super Moderator Staff Member Mod/Admin

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    Yes thats the way forward if you can't pin point whats going on with it :up:
     
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