bobt
New Member
Posts: 12
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Post by bobt on Feb 23, 2006 16:57:47 GMT 1
I recently obtained a 7.62 Nato conversion which I want to use in my 8mm Turkish Vickers.
It came with 3 barrels and feedblock plus 500 links.
What is the correct way to headspace the kit? Do I use normal go and no-go gauges?
I will be using the 8mm lock with the 7.62 feed block.
Does each barrel need to be checked?
Gun runs just fine in 8mm.
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Post by Richard Fisher on Feb 23, 2006 17:11:18 GMT 1
Not a shooter myself (being in the UK), I am unable to provide practical advice myself but you may with to contact Bob Naess of Black River Militaria who does 7.62mm conversions. His website is www.blackrivermilitaria.comHope this helps in the interim. You may get more direct information from other members of the site that are practical shooters themselves. Regards Richard |
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Post by woodsy on Feb 23, 2006 20:49:19 GMT 1
Headspacing of a Bren, regardless of calibre, is done using the appropriate Go & No-Go gauges. Withdraw the butt slide so that the return spring is not acting upon the piston, and insert the Go gauge into the bolt face by hand and push the piston forward. The bolt should rise up fully into the locking recess. Repeat the operation with the No-Go gauge and the bolt should not rise up fully. If this is the same with all barrels then you are 'hot to trot'. If the headspace needs to be adjusted then this is done by changing the barrel locking nut. If the headspace is too loose then a thicker nut must be found. If the headspace is too tight then the nut can be reduced on one face by carefully stoning the surface evenly to give good bearing. The good news is that generally Bren barrels are pretty interchangeable and the headspace seldom needs adjusting.  |
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Post by woodsy on Feb 23, 2006 21:02:10 GMT 1
Having just given you a completely useless dissertation on headspacing the Bren, I have just re-read your question!   Headspacing a Vickers is seldom required but can be achieved by the following method. Remove the complete barrel and lock assembly from the gun and set it up in correct order on your bench. Slide your headspace gauges down the breech face and see whether or not the toggle closes fully on the Go and not on the No-Go. If it is too loose then you must cut shim washers fron steel shim stock which go between the two halves of the toggle joint (the part you give a half-twist to remove the breech block). Similarly, you must stone the female face of the joint if the headspace is too tight. This system is used on all Maxim type guns. I think I am on the right subject this time!!  |
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Post by Peter Wells on Feb 24, 2006 7:26:05 GMT 1
Hello Bobt - welcome to the world of the 7.62mm Vickers (South Africa, that is, as we were the only ones to do that conversion! ;D) Woodsy got it right (eventually ) but I must say two things: 1) the Vickers is remarkably tolerant of excess headspace as the case is held by the extractor at all times 2) I have never experienced a gun that required removal of metal - every gun that I have seen/handled etc. had at least one shim in place. Having said that, my experience is only with 'issue' barrels (which are probably correctly toleranced) and not new made commercial stuff. ps. I can supply correct links if you need? Have fun. |
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bobt
New Member
Posts: 12
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Post by bobt on Feb 25, 2006 6:12:11 GMT 1
Hello Peter & Woodsy,
Thank you for the info on how to do this. My kit is a South African one and Peter, I already obtained some extra links from you and a couple of starter tabs this past December.
Thank you both again!
I'll let you know how well the conversion works once we get it headspaced and in the gun!
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Headspacing a Vickers is seldom required but can be achieved by the following method. Remove the complete barrel and lock assembly from the gun and set it up in correct order on your bench. Slide your headspace gauges down the breech face and see whether or not the toggle closes fully on the Go and not on the No-Go. If it is too loose then you must cut shim washers fron steel shim stock which go between the two halves of the toggle joint (the part you give a half-twist to remove the breech block). Similarly, you must stone the female face of the joint if the headspace is too tight. This system is used on all Maxim type guns. I think I am on the right subject this time!! 