So I'm interested in Anschutz. Where to start? Help.

[Sakoman .308]

I guess I won't expect an answer to my pm.
Hopefully he takes the ad down so others don't send him useless private messages.

 

[Maple57]

Interesting that they had the insight to interrupt the barrel threads like that. That is simply understated engineering genius.

A problem with long thread engagements is that the threads closest to the shoulder take more of the force than threads further away and that normally negates the value of long barrel thread engagements. However, by clearing the threads in the middle like that, they dissipate that elongation effect and lengthen the engaged thread length and bypass the traditional thread loading characteristics.

Once upon a time long ago I read that accuracy junkies used Spiralock threads to counter that effect, but this achieves a similar result with a standard thread profile.

Very clever.

If you are interested, here's a link that explains the effect of thread load dissipation.

https://www.researchgate.net/figure/Schematic-diagram-comparing-the-radial-load-distributions-estimated-for-the-regular-and_fig6_307557365

 

[grauhanen]

An interesting theory, Maple57.

A very experienced and knowledgeable Anschutz shooter on RFC has suggested there may be a more commonplace purpose for the two sets of threading. In his words, "it's a relief for the forward bedding screw. Match 54 barrels normally have a small indent there. I guess Anschutz went with a groove to make assembly faster, just like the separate chamber face. No need to align the screw hole and indent."

 

[Maple57]

An interesting theory, Maple57.

A very experienced and knowledgeable Anschutz shooter on RFC has suggested there may be a more commonplace purpose for the two sets of threading. In his words, "it's a relief for the forward bedding screw. Match 54 barrels normally have a small indent there. I guess Anschutz went with a groove to make assembly faster, just like the separate chamber face. No need to align the screw hole and indent."

I wonder if they were smart enough to do this for both reasons.

 

[EHG]

Same was done with the Rem 788 barrel. Middle relief was done for the bedding screw.