+Peak Creedmoor Considerations

[peaceful_ruler]

I ran the numbers at a few DAs- 18” barrel I assumed 2900 FPS MV.

-1000 DA gets you 810 yards before 1800 FPS

4000 DA gets you 940 yards

7000 DA gets you 1030 yards

that’s much further than 99.9% of people should be shooting at animals. I’m sure you could bump those MV numbers down but regardless, I think 16-18” is the ticket for hunting.

For long range shooting - it’s gonna be great for that.

I personally prefer a minimum impact velocity of 2000 fps for cup and cores and most bonded projectiles. 2200 fps for monos

 

[peaceful_ruler]

I ran the numbers at a few DAs- 18” barrel I assumed 2900 FPS MV.

-1000 DA gets you 810 yards before 1800 FPS

4000 DA gets you 940 yards

7000 DA gets you 1030 yards

that’s much further than 99.9% of people should be shooting at animals. I’m sure you could bump those MV numbers down but regardless, I think 16-18” is the ticket for hunting.

For long range shooting - it’s gonna be great for that.

What projectile? An 18” 6.5 CM +Peak won’t push the biggest pills even 2800 I don’t believe.

 

[The_BuckingSpot]

6mm Creedmoor is already in the moderately overbore club.

+Peak will push it pretty hard.

Kinda like a 6UM?

 

[omicron1792]

I personally prefer a minimum impact velocity of 2000 fps for cup and cores and most bonded projectiles. 2200 fps for monos

Most here aren’t considering the monos and stout bonded.

Lots of data on the tmk and eldm type bullets working down to 1800. Especially tmk.

Agree that 153tmk will probably be around 2750 from 18” in factory ammo. I bet the reloaders end up well into the 2800s. Still fantastic.

 

[Ajsomp]

What projectile? An 18” 6.5 CM +Peak won’t push the biggest pills even 2800 I don’t believe.

153 TMK. Chatted with an acquaintance who’s been shooting this stuff behind the scenes who was/is getting 2900-3000 with 153 ATIPs. So probably not as hot from the factory but federal is loading the 153 TMK.

 

[UnckleBob]

I know proof started this project in 2024, so it took them a while to get to their level of finished product. I believe special rifling machines were needed to be able to execute the wild twist change.

Don't expect every barrel manufacture to jump on board till all this washes out. It might be a fad, it might be the next generation, unknown at this point. These machines are very pricey, and companies likely won't get on board until a known demand is there. My thoughts on the subject.

I doubt any barrel makers who are not being given military contracts will be able to justify the capital outlay needed to make gain twist barrels AND the R&D cost needed to do it correctly.

I doubt we would have seen high pressure cartridges from Sig and Federal without similar government contracts.

 

[mwoolsey5]

I will say I’m really excited about the potential benefits of the +Peak in already existing cartridges. I have two primary concerns right now I’d like to see fleshed out a bit more.

1. Is it accurate? I’m hearing/reading really mixed reports on whether the +Peak can be accurate. Most of this has been from the 7 BC reports. I don’t know if the 7 BC itself struggles with accuracy, and this would be resolved in an existing cartridge like 6.5 CM, or if it’s an actual concern. All the speed gains in the world won’t matter if I can’t hit what I’m aiming at.

2. Is it safe? There’s been at least a few action manufacturers that have privately stated they don’t want +Peak used in their actions (one was Tikka). I understand that the case is intended to contain the pressure. If there is a case failure though, can the action handle the pressure?

I hope these both end up being proven to be nothing-burgers. It’s a cool innovation that I’d like to try at some point. I imagine SHOT is going to have some of these bullet manufacturers scrambling to offer their own version.