Zeroing Colt pencil barrel

[georgeib]

Same test.

Faxon(not much if any shift due to heat) vs. Colt SP1(fair amount of zero shift due to heat).



Small/single samples and all that good stuff.

Curious what your newer(I assume) Colt barrel does when hot.

Stress relief makes a difference heat related zero shift, as does barrel length.

[DG23]

Stress relief makes a difference heat related zero shift, as does barrel length.

Curious what Faxon means when they say 'stress relief' because their groups looked like crap hot or cold.

[georgeib]

Curious what Faxon means when they say 'stress relief' because their groups looked like crap hot or cold.

Well, at least they were consistent.

[DG23]

Well, at least they were consistent.

Funny as it may be - you are correct sir. They were 'consistent' groups.

I watched a bunch of the Faxon Q&A videos and from those guys and the stress relief thing came up frequently but never any details about what kind of stress relieving they were doing and if they were doing it 'in-house' or sending stuff out or what. Very vague on any details.

[georgeib]

Funny as it may be - you are correct sir. They were 'consistent' groups.

I watched a bunch of the Faxon Q&A videos and from those guys and the stress relief thing came up frequently but never any details about what kind of stress relieving they were doing and if they were doing it 'in-house' or sending stuff out or what. Very vague on any details.

From what I read, the process is relatively straightforward. The barrels are heated to 1000 degrees in a vacuum and then allowed to cool slowly.

[DG23]

From what I read, the process is relatively straightforward. The barrels are heated to 1000 degrees in a vacuum and then allowed to cool slowly.

Pertaining to Faxon or 'in general' sort of terms?

[georgeib]

Pertaining to Faxon or 'in general' sort of terms?

In general. I have no information on their process, but I assume based on the straightforward nature of the process, that they probably have their own vacuum oven.

[DG23]

In general. I have no information on their process, but I assume based on the straightforward nature of the process, that they probably have their own vacuum oven.

The Colt barrel on top was done by the nice lady at Cryo Plus. The bottom one was done by Diversified Cryogenics.

Sometimes you can slip a barrel in with some tools / cutters and the receipt will look like it was all for business stuff.

[sinister]

Goofy test protocol.

Two different rifles, two different sighting systems, two different barrel lengths (free-floated), with two different shooters. No telling if the triggers were different, either.

Add in a completely new and different SP-1, probably with a GI trigger, non-free floated, over a shit front rest.

... and I'm supposed to consider the results a close, valid test.

[T2C]

Zeroing is the same with any barrel. It's either center of mass or center of mess depending on the quality of barrel and ammunition.