Hello all,
I am in the process of barreling an 86 Win. TAKE DOWN to 40-65. The original barrel is rotted.
I have two questions:
First, what is the purpose of the 3 screws in the receiver extension?
Second, what would be the best rate of twist using a 265 gn cast bullet?
Thanks for the help
But, these 3 screws do not protrude through the extension at all. They are on the forend side of the extension. There are 3 blind holes in the extension. They are just “there” with no apparent function at all. I know what you’re suggesting and how that would work if in fact they did protrude…however, these don’t and none of my other 4 1886’s show any sort of adjustment capability either????
Was that 1:20 for the 260 gn bullet?
Thanks,
John
Tyke said
But, these 3 screws do not protrude through the extension at all. They are on the forend side of the extension. There are 3 blind holes in the extension. They are just “there” with no apparent function at all. I know what you’re suggesting and how that would work if in fact they did protrude…however, these don’t and none of my other 4 1886’s show any sort of adjustment capability either????Was that 1:20 for the 260 gn bullet?
Thanks,
John
John,
The (3) screws & holes are indeed “blind” holes. The steel underneath the bitter end of the screws is very thin so that it can easily be deformed to create a raised dimple on the face of the take down extension when the screw is turned in (thereby tightening it).
The 1:20 twist rate was optimum for the original factory 260-gr bullet load for the 40-65 WCF cartridge. It should be more than adequate for a 265-gr bullet. However, if you want to shoot heavier bullets (300-gr or heavier), I recommend using a faster 1:18 or even 1:16 twist rate.
Bert
WACA Historian & Board of Director Member #6571L
Jeremy P said
There are a very few videos detailing this adjustment but they all warn to not mess with it unless absolutely needed, and even then in very small quantities.
True… I just adjusted one for a WACA member last week (on a Model 1894 Take Down). If the proper tools and technique are used, it is actually not difficult and it poses no danger to the rifle.
WACA Historian & Board of Director Member #6571L
Back when I was collecting takedowns, that was one of the thing I would look at to see if its been tightened already. That would give me a idea of how much use it had. Once there are tightened and taken apart a few times you would see the dimples that wore a lot quicker.
Bob
WACA Life Member--- NRA Life Member---- Cody Firearms member since 1991 Researching the Winchester 1873's
Email: [email protected]
1 Guest(s)
