My .223 VSSF was 1/2x20 from memory, definitely wasn’t 1/2x28 as I’ve only ever had one rifle with that thread and it was 10 years later.
Remington 700 VSSF inbound!
- Thread starter Lone wolf
- Start date
No they aren’t interchangeable but it’s easy to see the difference, the 1/2 x28 UNEF or 5/8x24 UNEF are finer (EF-extra fine).
Post a decent pic of the thread and I suspect someone should be able to tell you.
Same, well I bought 2 on the same day, CZ550 6.5x55 and a .223 VSSF. Still have the CZ and wish I still had that .223, seriously accurate but I convinced myself I needed a 1:8/1:9 so changed for a CZ527 varmint.
I now have a 1:14 .223 AI
Cheers chaps that is much appreciated!
Heres is a pic of the thread
And on SD advice I set my calipers to 1/4" and counted 5 threads so I guess it's a 5/8 24 UNF
Again thank you guys
I might have the stock a new home so just waiting for a AI chassis to come up for sale now
Heres is a pic of the thread
And on SD advice I set my calipers to 1/4" and counted 5 threads so I guess it's a 5/8 24 UNF
Again thank you guys
I might have the stock a new home so just waiting for a AI chassis to come up for sale now
I think you should measure again. If you count 8 crests, 7 roots, therefore 7 pitch’s you should get the following measurement
For an 18 TPI (UNF) you should measure 0.389” across 8 crests.
For a 24 TPI (UNEF) you should measure 0.292” across 8 crests.
Bear in mind that just identifying the thread pitch, and measuring the major diameter will not ensure that your thread is cut to any specific tolerance, and will not ensure that all moderators of that thread size will fit.
Remember - Put grease on your threads the first time you screw on a new moderator….
For an 18 TPI (UNF) you should measure 0.389” across 8 crests.
For a 24 TPI (UNEF) you should measure 0.292” across 8 crests.
Bear in mind that just identifying the thread pitch, and measuring the major diameter will not ensure that your thread is cut to any specific tolerance, and will not ensure that all moderators of that thread size will fit.
Remember - Put grease on your threads the first time you screw on a new moderator….
Smellydog
Well-Known Member
What does the caliper say for diameter?Cheers chaps that is much appreciated!
Heres is a pic of the thread
View attachment 423858
And on SD advice I set my calipers to 1/4" and counted 5 threads so I guess it's a 5/8 24 UNF
View attachment 423859
Again thank you guys
I might have the stock a new home so just waiting for a AI chassis to come up for sale now
From here it looks like 1/2"x 20
Will check that mate, I didn't think to do that
Thank you that's very useful!
I will measure it again and report back!
That confirms it as 5/8, now measure along the 8 visible threads
Got there in the end 
Got there in the end
Guys thank you so much!
So to confirm I would need a 5/8 X18 (UNF)
Really really appreciate the help on this
Cheers chaps that is much appreciated!
Heres is a pic of the thread
View attachment 423858
And on SD advice I set my calipers to 1/4" and counted 5 threads so I guess it's a 5/8 24 UNF
View attachment 423859
Again thank you guys
I might have the stock a new home so just waiting for a AI chassis to come up for sale now
Cheers for the heads up buddy, I managed to get on, should be here this week
So it would be rude not to update the thread with how I got on!
I managed to pick up a wildcat moderator and took it out for its first outing to get it zeroed in, 50g vmax homeloads and it was able to produce this nice little group with a steady 3-5mph wind
Now the crops are coming down I will be able to put this to good use soon
I managed to pick up a wildcat moderator and took it out for its first outing to get it zeroed in, 50g vmax homeloads and it was able to produce this nice little group with a steady 3-5mph wind
Now the crops are coming down I will be able to put this to good use soon
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