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Author Topic: BSA Mercury  (Read 989 times)

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darran77

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BSA Mercury
« on: April 16, 2014, 08:37:41 PM »

Just wondered why there is not a section for the Mercury in BSA guns??,
maybe its not as popular as the other springer's.
But i had one in the other day for repair,as it was making an awful crack when fired
and wouldn't even push the pellet past the breach.
On strip down my thoughts for the problem were realized when i released the trigger/spring retaining
setup (whatever its called), pulled out the spring and the piston weight, to find no piston on the end /ooooppppps2/ .
This thing was in a right state, covered with excessive grease and oil and a piston stuck in the tube,
and the only way to remove it was to put a brazing rod through the air outlet and tap it home.
Once out i made a new buffer washer replaced the pin that holds the piston end in place and put the whole thing on the lathe for a good spin and polish up, a new O-ring was put back on with a (little) bit of gun grease, the black stuff
which i have forgotten the name of at this time.
I gave the tube a clean up and de-burred the guide which was sharp enough to cut my finger as well as slice the new O-ring, and put it back together . One thing i was not happy about was the OX spring that was fitted was far too long for the gun as i had to clamp it up and if any one has ever tried to do one of these guns they will know its not easy.
But back together and in the stock i put the one and only .22 pellet i had in it and test fired it ,
a little bit of dieseling but that will clear soon and the chrono reading was a respectable 9.7 ftlbs.
Once the lad call's round with his pellets i will give it a good run through.
Just a question if i clean the barrel out with a felt pellet do i have to put a lead pellet in behind it to maintain back pressure ?.
daz
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RobinHough

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Re: BSA Mercury
« Reply #1 on: April 16, 2014, 08:47:26 PM »

I had a Mercury Mk2 in.22 and a Mk3 in.177, smashing guns....

Have a look in the Vintage section  plenty of info there.. I did wonder why there was not a dedicated section too?

ATB

Robin
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darran77

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Re: BSA Mercury
« Reply #2 on: April 18, 2014, 05:17:39 AM »

Cheers Robin , i never thought of having a look in there .
daz
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SG

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Re: BSA Mercury
« Reply #3 on: October 23, 2018, 04:44:00 PM »

I like the Mercury series ...

MK1
MK3
S .177
S .22

I think I'm getting the collecting bug  :sign0135:
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acdean

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Re: BSA Mercury
« Reply #4 on: November 16, 2018, 07:48:41 PM »

My proper first rifle. I have three including a really nice mk4. I even found a .177 Challenger in a country store today and they are quite rare. Unfortunately it was in for repair rather than for sale.

atb

Andy
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vangard

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Re: BSA Mercury
« Reply #5 on: November 18, 2018, 01:59:15 PM »

I always put a pellet in behind the cleaning felt on a springer.
I was told this was the best way to do it, but I dont do that on a pcp.
Hope this helps.
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