Buggar... scoped moved

I'm using:
15 in.lb for the 4 small screws hold the top of the ring to the bottom 2.5mm Hex
25 in.lb for the single cross screw holding the ringmount onto the rail 4mm Hex
40 in.lb for bedding screws in plastic stock for comparison Torx25

Attachment 204548
Attachment 204549

I think my rings are optilocks with plastic inserts

Those ones of mine are optilock without insert.

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Originally Posted by Bagheera

Those ones of mine are optilock without insert.

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Ok thanks, I don't think I'm far off the mark then :thumbsup:

Quote:

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Originally Posted by Bagheera

NFT, that's a tour de force.
Looks like a 6mm PPC ?

I don't like the idea of fitting a single curvy line that runs exactly through all the points on your graph. A regression curve that allows for some uncertainty of measurement in each groups size would be more convincing. You can get some idea of that from the way your 3 group average varies by up to 0.2" from the single measurement on the left. Looks like around CBTO 1.915 should be your sweet spot. Nevertheless, very good work and I wish I had data like that.

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223 Rem for 60 gr Vmax

The graph was plotted using Excel - using exact figures. I hear you though not keen on use of a regression curve - we OCD over collection of such results, change seating depths at three thousandths of an inch at a time - there's no way I'm going to use a regression curve to draw a 'best fit' - its either doing something or not - thats my view that may differ from others.
However I'm more OCD on these sort of things! Can be a hinderance in some aspects !

Thanks though.... you too can attain data like this...
You're in my neck of woods - never say never

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Originally Posted by Bagheera

Those ones of mine are optilock without insert.

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What caliber are you using for the 15inch lb? As mine shifter under the 7mm saum @ 17inch lb. Nightforce nx8 + nightforce rings.

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Originally Posted by Larskramer

What caliber are you using for the 15inch lb? As mine shifter under the 7mm saum @ 17inch lb. Nightforce nx8 + nightforce rings.

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Just had a look and seems 25 inch pounds is the standard for ring cap screws on nf rings.
I certainly have never had any move.
When I am torquing them down make sure t keep going till there is no movement on the bit.
With my own rifles I always re check after the first zeroing session to make sure.




Sent from my SM-A226B using Tapatalk

Attachment 204642amazing what a tight scope can do.

Didn't think it could have gotten any better.... but wow... it did.

Quote:

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Originally Posted by Larskramer

What caliber are you using for the 15inch lb? As mine shifter under the 7mm saum @ 17inch lb. Nightforce nx8 + nightforce rings.

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Very nice work, @Larskramer ! :)

My gun is 7mm08 w 140gr bullets and all up pretty much 4kg.
It holds zero but certainly doesn't shoot like those groups of yours.

I thought these were OK (screws finger tight only), but perhaps some attention to torque could be worth while.
This is at 100m with 1cm grid.
Attachment 204711

Quote:

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Originally Posted by Bagheera

Very nice work, @Larskramer ! :)

My gun is 7mm08 w 140gr bullets and all up pretty much 4kg.
It holds zero but certainly doesn't shoot like those groups of yours.

I thought these were OK (screws finger tight only), but perhaps some attention to torque could be worth while.
This is at 100m with 1cm grid.
Attachment 204711

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I also had a big ladder test to go through, my first ladder was groups of 3 looking for speed I was after ( anywhere close to 3000fps) and then SD spread in each group, hailed 64.2g with average 8fps spread. Then the seating depths were 0 jump, 5thou jump, 10thou jump, 20 and 30 with a 10 thou neck tension, then another repeat of jumps with a 20thou neck tension. Safe today she's a shooter!

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Originally Posted by Barry the hunter

aha the old loose scope - practising for the DOC shoot many years ago my tikka .222 started to shoot like shit - awnser metal seriously loose in wood - bugger

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Ahhh the good ol annual Wgtn Conservancy FS/DOC range shoot with aftermatch hangi/pissup in the name of 'team building'.All the hunting crews rock up to try to retain your professional reputation amoungst all the other guns.Reef off a heap of tax payers' trebly down range in the quest for the trophy.Most years had my eye in so didn't disgrace myself.Good memories

Bro can you save me some barrel life i wanna buy it when your doing your next build