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  #16  
Old 09-26-2014, 01:19 PM
BrianJ
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If BSA is like most other manufactures the receivers were serialed in numerical order but were used at random. Because of this it is not possible to date by serial number. You can however come close by using the changes if any that occurred during that period.

How wide is your receiver, 1-1/4 ?

bjm

Last edited by BrianJ; 09-26-2014 at 06:29 PM.
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  #17  
Old 09-26-2014, 06:04 PM
BrianJ
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According to Mr Knibbs in Aug of 1950 U101 began production until June of 1953 U2712 ended for what we call the MK-I so 2611 were produced. Your rifle 77X falls in that area, probably sometime in 1952.

bjm
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  #18  
Old 09-29-2014, 09:13 AM
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Measured at 1.2345"
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  #19  
Old 09-29-2014, 10:08 AM
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Quote:
Originally Posted by horseman2 View Post
Measured at 1.2345"
You sure it wasn't 1.23456?
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  #20  
Old 09-29-2014, 01:49 PM
BrianJ
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The 1-1/4" inch receiver makes it a Mk-I. and as Knibbs states 1950 to 53 for MK-I, probably 51/52 depending on how the receivers were used.

bjm
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  #21  
Old 10-01-2014, 02:56 PM
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Quote:
Originally Posted by BrianJ View Post
The 1-1/4" inch receiver makes it a Mk-I. and as Knibbs states 1950 to 53 for MK-I, probably 51/52 depending on how the receivers were used.

bjm
But it is stamped Mk II and has the trigger adjustments on the front of the trigger guard.
Regardless, it shoots great and is a keeper.
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  #22  
Old 10-01-2014, 03:39 PM
BrianJ
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Bsa

Horseman,

I have in my files a copy of the BSA write up from the UK. It states the MK-II trigger adjust could be "retrofit" to the MK-I by returning to BSA or their agent such as PH.

Further it notes "This modification and the ADDITION of the notation MK-II in place of the original marking ".22RF" were the only externally visible differences between the two marks of standard rifle."


www.rifleman.org.uk

Then, Miniture cal. and TGT rifles, Then BSA MKI & MKII


bjm

Last edited by BrianJ; 10-01-2014 at 03:52 PM.
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  #23  
Old 12-30-2014, 02:52 AM
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Bsa

Was this write up published in a magazine or book?
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  #24  
Old 12-30-2014, 06:16 PM
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published

Alan,

Follow the directions at bottom two posts up. It had said that in two separate places previously but looks as if it was revamped and makes mention in one spot last I looked.

"The Book" has previous info on production.

bjm

Last edited by BrianJ; 12-30-2014 at 06:31 PM.
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  #25  
Old 02-19-2015, 07:31 PM
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After a long internet search I could not find anything on the Martini International Mk III 26" tapered barrel twist rate and # of groves, anyone have any info on this?
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  #26  
Old 02-19-2015, 07:33 PM
cdiver2
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A little BSA History

https://www.youtube.com/watch?v=bmDe1EmE_NM
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  #27  
Old 02-19-2015, 08:46 PM
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Twist and rates would all be the same.
Count the grooves yourself...I think off hand it is 6, with a 1 in 16" twist rate.
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  #28  
Old 02-20-2015, 05:18 AM
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Originally Posted by M14man View Post
Twist and rates would all be the same.
Count the grooves yourself...I think off hand it is 6, with a 1 in 16" twist rate.
Thank you I did attempt to count the groves but these old eyes with trifocals made it difficult...I came up with a different number every time I tried or maybe I need to learn how to count again
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  #29  
Old 04-08-2015, 02:28 PM
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Rimfire Ring Mount for a Martini International

Several times in this forum I have been asked about the 12" long 11mm scope rail attached to the barrel of my MK II. If you have an International and want to mount a modern scope with either 11mm or 3/8" based rimfire rings, this works very well and requires no additional holes to be drilled in your barrel or action.

I have this on my MK II. I bought the rifle used with this already attached:

http://www.brownells.com/optics-moun...prod40900.aspx

As the information says, you cut to the length you need. Then you drill and countersink holes to match the base mounting holes already drilled into your barrel. The ones advertised in the attached link are for 3/8" based rings like are standard on my CZ 452 American. The one mounted on my Martini MK II is for 11 mm based rings, as is usual for Anschutz and most other European rifles. 3/8" American style rimfire based rings are just as common as 11mm. So it does not matter which rail blank you buy. Just match the rings to the rail. Many manufacturers now even make rings with a piece that can be turned 180 degrees to allow the ring to fit on either an 11mm or a 3/8" base.

The person who mounted the dovetail scope base on my Martini mounted the whole 12" length with it just touching the front edge of the action. That allows a lot of movement to achieve proper eye relief with different scopes.

You will need access to a drill press and precision measuring tools to get precise location of the screw holes in the rail. If you have a friendly gunsmith or machinist, I would let him drill the holes.
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  #30  
Old 04-09-2018, 01:44 AM
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Onearm, I take it the rail you used was P/N 080-032-101WB ??
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