New proof PXT Gain twist barrels

[Lawnboi]

This is exactly what I told some the local guys from proof. I want 65 25 6mm comp contour fast twist, as well as the same caliber twist combos in light palma, plus the interior vacuum applied coatings that supposedly increase barrel life 3x. They kinda laughed and said it'll be a while, if ever. They're figured out something for military high rate of fire, barrel life extending coatings but civilian side, well likely never see it, cuz what barrel company wants to sell less barrels?

I do know the carbons they has pre-stocked expecting mass sales, hasn't happened as they thought.

That what makes me think the claims are all bologna. Surely if they found something more advanced they would be putting them in the nada of their shooters and spotlighting the actual advantage.

If they hit expert voice I may grab a 6.5cm and give it a go.

 

[RockAndSage]

This is exactly what I told some the local guys from proof. I want 65 25 6mm comp contour fast twist, as well as the same caliber twist combos in light palma, plus the interior vacuum applied coatings that supposedly increase barrel life 3x. They kinda laughed and said it'll be a while, if ever. They're figured out something for military high rate of fire, barrel life extending coatings but civilian side, well likely never see it, cuz what barrel company wants to sell less barrels?

I do know the carbons they has pre-stocked expecting mass sales, hasn't happened as they thought.

Do you know if the new carbon PXTs are still the same stainless as before, or are they actually doing a higher quality alloy?

 

[nm.otter]

If they're actually doing single-point cut as mentioned, new alloy options would be limited.

I'm still bullish on the possibilities ECM opens up.

 

[RockAndSage]

If they're actually doing single-point cut as mentioned, new alloy options will be limited. I'm still bullish on the possibilities with ECM.

I listened to the Sons of Liberty Gunworks interview with a couple of the Proof guys involved in the barrel's R&D - some of it is going to be pretty cool to see, but I was also genuinely confused by how much of what they were talking about was actually in the newly offered barrels. It sounded very much like the new alloys and coatings were just what the new barrels were, but there's no indication of that on the website.

 

[AlaskaRed]

5k rounds out of a 7 BC is saying something. Can't completely be a gimmick. I think there is some merit to this with high pressure rounds in mind.

Proof has been in business a while. I'm sure they have the data proving what we already know is that the vast majority of shooters(customers) are not shooting out barrels. Why not sell a product that has a convincing benefit that may sell more to those shooters who aren't replacing barrels anyway?

I doubt there is any conspiracy behind it and it probably works completely as advertised. Should a guy spin off a completely servicable barrel in the same cartridge for the benefits? I would say absolutely not.

 

[Treelineasassin]

Do you know if the new carbon PXTs are still the same stainless as before, or are they actually doing a higher quality alloy?

I doubt it, but don't know for sure. Believe the new alloy/coatings is mil stuff only at this point in time.

 

[hoooogan]

I'd be curious to see how bullet jump plays out with basically straight lands. The whole jump theory is about timing when the bullet is forced into rotation, but that seemingly doesn't matter with the PXT rifling until several inches into the barrel. Could make load development easier and less picky with factory ammo. Hell, that could possibly explain why accuracy stayed tight for much longer than traditional rifling. Maybe it's not that the throat/lands aren't eroding but that it doesn't matter anymore.


Just some shower thoughts from an over thinker.

 

[naked wombats]

Could make load development easier and less picky with factory ammo.

I think that is one of the design concepts for the .mil applications. Less picky on lots and loads for easier supply chains.

Read one article that suggested the accuracy claims were in fact based on averaging tighter groups across multiple loads vs absolute accuracy.

Will be interesting to see more as they get out there in use.

 

[AlaskaRed]

After listening to the Hornady Podcast with Proof I think it was pretty clear the intent here was to make the barrels last longer with high pressure ammunition, like 80k+ pressure.

 

[1000yards]

They're figured out something for military high rate of fire, barrel life extending coatings but civilian side, well likely never see it, cuz what barrel company wants to sell less barrels?

I like to believe it's a free enough market that if someone else doesn't start selling this new tech sooner or later, then it was never real to begin with.

 

[hoooogan]

I think that is one of the design concepts for the .mil applications. Less picky on lots and loads for easier supply chains.

Read one article that suggested the accuracy claims were in fact based on averaging tighter groups across multiple loads vs absolute accuracy.

Will be interesting to see more as they get out there in use.

If the pickiness ends up bring true, that alone would be worth the switch. Just need to work up a powder charge ladder to desired velocity and done. One can dream.

Cant wait for the real world reviews and not a bunch of sponsored brochure readers.

 

[naked wombats]

I do wonder how these barrels will react to secant ogive/VLD projectiles.

If the accuracy of all random loadings improves to "acceptable", this might be a way forward towards the alloy and steel one time use cases at 80k+ psi vs buying 6-8 boxes and "finding what it likes" for the box a year guys.

Having limited loadings and no reloading options restricts interest for a lot of folks, but what if every 7mm BC and 6.5 BC load shot sub moa in every random box from every manufacturer year after year.

 

[AlaskaRed]

I do wonder how these barrels will react to secant ogive/VLD projectiles.

If the accuracy of all random loadings improves to "acceptable", this might be a way forward towards the alloy and steel one time use cases at 80k+ psi vs buying 6-8 boxes and "finding what it likes" for the box a year guys.

Having limited loadings and no reloading options restricts interest for a lot of folks, but what if every 7mm BC and 6.5 BC load shot sub moa in every random box from every manufacturer year after year.

I'm not sure if your implying the 7BC is not reloadable? I have reloaded my cases multiple times with lee dies. In fact these cases and lee dies have produced the best concetricity in my reloading press than I've ever seen.

But it is interesting if this twist removes the whole idea of "chasing the lands" all together. I wouldn't mind never talking about seating depth ever again.