300BlkTalk

One of my first suppressors was a Yankee Hill Cobra M2 in .40 pistol can. Bought it 12-14 years ago. It is a heavy steel stake driver of a can. One of my 300 BOs is a heavy barrel bolt gun so weight is not an issue. My gut feeling is as long as the caliber is larger than the bullet I would be OK. A...

There is no immediate danger, but CFE is unpredictable with low density loads. It shows up with extreme velocity spreads. The other thing to watch out for is that it burns very poorly, so you end up with a lot of incompletely or unburned powder in your suppressor and fire control group, trigger. Pow...

That’s probably more than a stem fit issue.

As TR said compression is a likely cause.

The other possibilities are too tight of a neck, or a seating die that crimps adjusted too far down. If the crimp starts too soon, it will be interfering with the seating of the bullet.

certifiable wrote: ↑

Wed Aug 05, 2020 2:16 am

Any interest in resurrecting this thread/challenge?

Always interested in a reason to shoot, not much time lately.

New thread or pile on in this one?
New might be cleaner.

What
Twist rate,
Bullet,
velocity

rlandry6 wrote: ↑

Tue Aug 04, 2020 7:43 am

Is there a formula for determining the RPM a bullet is traveling using velocity and twist?

12/twist X velocity X 60 = bullet rpm.

12/5 X 2200 X 60 = 316,800

12/7 X 2200 X 60 = 226,285

Any one else shooting this one?? I bought a Ruger Bolt as soon as one was offered. Deemed it a dumpster fire Winchester created probably from a bunch of "9mm is awesome and has now equal" types. Any how I justified it in my brain as a cast bullet fun. I cast and powder coat and this along with my r...

The difference between an 18 & 24" barrels with factory Barnes 110 ammo is just over 150 fps. about 2570 fps in the 24".

With 110 Vmax handloads in a 24" bolt action, 2800 fps is not out of the question.

People without experience should not speculate

Do you shoot or have access to 9mm. 380, 38 spl brass? If so you have a workable comparator we can get some numbers from? you can also cut off a 223 or blackout case below the shoulder and trim it square Actually just ordered the Hornady headspace kit and bullet comparator kit yesterday so I can ge...

Do you shoot or have access to 9mm. 380, 38 spl brass?

If so you have a workable comparator we can get some numbers from?

you can also cut off a 223 or blackout case below the shoulder and trim it square