Author Topic: now the confusion begins, (...continues)  (Read 176 times)

kopcicle

now the confusion begins, (...continues)
« on: December 23, 2022, 06:23:23 PM »
The short story is
Probably 6.136"
Lap pins from just less than .156
Found another use for the .2768" ream
I'll hang FC on the pins for now while waiting for my favorite drop in to be "back in stock".

I want 1:9 because 168 is the lightest I throw. I'll probably get impatient and 1:10
Brother's Hardinge is up again so If I get pissy I can turn a blank down.
More on the Hardinge in another thread.

« Last Edit: December 24, 2022, 03:32:53 AM by kopcicle »

34_40

Re: now the confusion begins, (...continues)
« Reply #1 on: December 24, 2022, 12:09:48 PM »
Yep....  !AOK     that's the right word.. Confusion!  :19:
Clausing 108, Clausing 8520, Atlas Horizontal, Lincoln stick and mig welders

Carpenter84

Re: now the confusion begins, (...continues)
« Reply #2 on: December 24, 2022, 12:35:21 PM »
I'm sorry, Dennis. I can rarely make sense of what you ask/post. I usually read it two or three times and still can't follow.
Shawn

jpigg55

Re: now the confusion begins, (...continues)
« Reply #3 on: December 24, 2022, 05:15:08 PM »
Looks like someone is looking to make a Colfax design lower for an AR-10 in .308.
Any other reason besides slug weight for the 1:9 twist ?
So many factors can effect best twist rate, projectile length and velocity being the biggest factors IMHO.
SB 9A, Clausing 8520, Sanford MG 612

kopcicle

Re: now the confusion begins, (...continues)
« Reply #4 on: December 27, 2022, 02:48:48 AM »
There's just enough difference between the DPMS, Colfax, and Anchor Harvy that I've used that I think I'll be making separate tooling plates, code, layout 

Carpenter84

Re: now the confusion begins, (...continues)
« Reply #5 on: December 27, 2022, 05:30:27 AM »
Well it seems there are few that understand, so Iíll just go ahead and shut my big yapper! Confuse on, Dennis, confuse on.

PJB

Re: now the confusion begins, (...continues)
« Reply #6 on: December 27, 2022, 06:50:27 PM »
Thats one variation of 308 dims floating around the net.  Keeps things interesting sorting thru them trying to figure out which to use.  Be nice if there was an actual standard.


Sent from my iPhone using Tapatalk
1991 Bridgeport Series I 2J-VS  9"x48"
1979 Clausing Colchester Bantam Mk2 11"x30"
1972 Harig Super 612
2015 Tormach PCNC-1100 Mill

"They wants what you gots!"

PJB

Re: now the confusion begins, (...continues)
« Reply #7 on: December 27, 2022, 08:25:31 PM »
I think Area 419 has Timneys in stock but not the adjustable ones. 
1991 Bridgeport Series I 2J-VS  9"x48"
1979 Clausing Colchester Bantam Mk2 11"x30"
1972 Harig Super 612
2015 Tormach PCNC-1100 Mill

"They wants what you gots!"