Tikka updating 300 wsm twist rate- 1-10”

[LostWapiti]

I’d like to see someone prove that you can load either mag with 3 rounds installed with the bolt closed… so far, the HCA gen2 doesn’t easily allow it

My mountain tactical magazine holds 3 without question.

https://imgur.com/a/iDn888d

 

[BjornF16]

Regardless of your application bullets are not stable forever once they leave the barrel.

I never said it was stable forever. In answering a question about “stable forever” , l wrote about gyroscopic stability continuing to increase as it goes down range and slows down.

For practical hunting applications, “dynamical” (sic) stability is a non-issue

 

[wirehead]

My mountain tactical magazine holds 3 without question.

https://imgur.com/a/iDn888d

What an incredible sight!!!!!

Any negative takeaways / concerns?

Checking them now…

 

[LostWapiti]

What an incredible sight!!!!!

Any negative takeaways / concerns?

Checking them now…

Zero concerns in any way. Flawless performance for a season of hunting.

 

[wirehead]

Zero concerns in any way. Flawless performance for a season of hunting.

Out of stock / back order. darn it.

 

[Packmansion]

Zero concerns in any way. Flawless performance for a season of hunting.

I've been using these as well with no issue. the 3 rounder does seem to work better than the 5 rounder. I've got the long action version in both 3 and 5 rounds.

 

[Packmansion]

I never said it was stable forever. In answering a question about “stable forever” , l wrote about gyroscopic stability continuing to increase as it goes down range and slows down.

For practical hunting applications, “dynamical” (sic) stability is a non-issue

"A bullet has its' least stability leaving the muzzle." Least gyroscopic stability. I've had loads that open up at 300 yards well before they went transonic but looked great at 100. Not sure if that is stability related. If youre going to hunt with it you gotta take it out to the range you plan to hunt if you want to be sure.

 

[Andouille]

Case in point: MDT has a video where they fired a bullet backwards out of the case, was obviously flying straight a few feet out of the gun, and it was sort of stable till 100yds, then spun and fell out of the sky by 600 yds. The bullet was not aerodynamically stable to begin with, in stark contrast to any forward-facing modern bullet.

Here's a great discussion of twist rate that is refreshingly informative from the Hornady Podcast. It is explained how a bullet (forward-facing, obviously) is more unstable as it leaves the barrel and becomes increasingly stable as it slows in horizontal velocity, while the rotational velocity reduction is proportionally much less.
Hornady bullet twist discussion

 

[HighUintas]

Preorder available for Lapua brass

LAPUA BRASS 300 WSM UNPRIMED 100/BX - Graf & Sons

Projected for Spring 2024 Lapua is offering a superior quality 300 WSM cartridge cases for both competition shooters and hunting enthusiasts who demand the highest quality components. Lapua cartridge cases are known to have the most exacting tolerances and exceed the quality and longevity of...

www.grafs.com

 

[BjornF16]

Cold day here in Texas, 26 deg, 29.66" Hg, DA = -1840’

Calculated 1-11" twist today at 1.535 SG shooting 62.0 gr H4350 under 208 ELD-M (MV = 2784 fps, SD = 8.1, ES = 29.5)

10 Shot group at 100 yds = 1.02 MOA. Think I'll call that good. I'll load up some more and take it out to long range later this week.

 

[gerry35]

Looks really good. I'm surprised it gets that cold in Texas though.

 

[BjornF16]

Looks really good. I'm surprised it gets that cold in Texas though.

lol…was 9° F this am; 8° yesterday am. Colder still up in the Panhandle

 

[Randy181421]

Mine was 10:1. Just got

 

[Packmansion]

Mine was 10:1. Just got

Where did you purchase?

 

[LostWapiti]

Mine was 10:1. Just got

He is the chosen one! Leaving out so many details though. When and where did you get it? What sexual favors were performed?

 

[ropeup79]

Mine was 10:1. Just got

It says 10” on the barrel? Pics please

 

[BjornF16]

Update: Measured today’s DA = -1590’ with 16G24 winds from right.

First round hit with 1-11” twist shooting my 208 ELD-M load at 565 yards and 660 yards. 2 of 3 hits at 765 yards.

Bullet seems to be stable at distance.

 

[HighUintas]

Update: Measured today’s DA = -1590’ with 16G24 winds from right.

First round hit with 1-11” twist shooting my 208 ELD-M load at 565 yards and 660 yards. 2 of 3 hits at 765 yards.

Bullet seems to be stable at distance.

I would like to see a comparison of the wound channels between a 10" and 11". The terminal RPM apparently has an influence on how quickly the bullet comes apart/upsets. However, there's not a lot of discussion on it. Maybe it's marginal difference

 

[BjornF16]

I would like to see a comparison of the wound channels between a 10" and 11". The terminal RPM apparently has an influence on how quickly the bullet comes apart/upsets. However, there's not a lot of discussion on it. Maybe it's marginal

Bullet RPM = MV x 720 / twist (inches)

10”: RPM = 199,440

11”: RPM = 181,309

Roughly 9% difference…would be interesting to see if there is a terminal wound channel difference, but I doubt it is significant in this case

 

[Formidilosus]

I would like to see a comparison of the wound channels between a 10" and 11". The terminal RPM apparently has an influence on how quickly the bullet comes apart/upsets. However, there's not a lot of discussion on it. Maybe it's marginal difference

Well I could tell you, but apparently-

@solarshooter , you could just do an open-ended search on posts by Formidilosus and decide for yourself, but I'll save you a little bit of time and let you know that you are always wrong. Always. If you don't agree, most of the time, others will jump in and tell you you are wrong. I think those that used to disagree no longer post much in this forum anymore.