Recent content by Livnoutdoorsxd9

Just wanted to let anyone that's interested know that I have a couple of spots left on the first barrel order if you're interested in getting involved, PM me Also, if you're on Facebook, feel free to join the 358 Yeti Discussion and Development page for the most up to date information Sent...

You're thinking of the ARP 800 series bolt. I do have a few of those on different cats, but that is not what I am using for the 358 Yeti, as production on them has been suspended Sent from my iPhone using Tapatalk

I suppose I didn't articulate the current status of the bolt situation. I am using a bolt and extension specifically designed for the .473 bolt face by a well known manufacturer that has been running this setup with rounds that regularly operate at 65k psi for the past 8 years. I am not using a...

The 357 amp has a different shoulder angle and the body taper is different from what I gleaned just now. I am having custom dies made for proper sizing of the cases. Up to this point, I have used a 6.5x47 die that I have modified to suit my needs.

You got that right about Bruce! I've got a 7var and 22hellcat of his. You'll be pleased to know that he's been huge in the development of the 358 Yeti, so you know it's been done right! He currently has a 16" AR test barrel for the 358 Yeti to continue pressure testing.

The powders tested at this point are AA1680, AA5744, IMR 4227, and WW296. As far as pressure trace, I was not the man operating it. My good friend Bruce, who is now onto developing his 5th wildcat is the whiz with that system. I know he did have to adjust the calibration based on the barrel...

Pressure data was collected with the Pressure Trace equipment. I have some 310g cast, coated bullets coming for testing with subs.

Well a lot of time has passed, and a LOT of progress has been made. I have real world velocity and pressure data, and we are right on par with my predictions! We have successfully pushed a 180g 2600fps from a 16" barrel, and 200g@ 2500fps. I have also been able to chronograph my 12" AR which...

Something similar to the 800 Series bolt from AR Performance is what I'm looking for. That bolt is rated above 62k PSI. Running the short, fatter case at a higher pressure allows for fast burning powders in the magnum pistol range to be used. (i.e. AA1680, AA5744, W296, IMR 4227, and Lil Gun)...

Maybe you'd get close with ones like the DPMS G2, but there are a lot more AR15s in the hands of shooters than AR10s which makes for an easier barrel/ bolt/ mag swap than in the larger frame AR while being able to still achieve a similar level of performance.

I know they're not the same, but the chamber pressure plays a role in the bolt thrust. I appreciate the input! I'm by no means an expert, and appreciate any and all info I can get to help make this project a success.

I don't have a clear cut answer on the bolt and extension at this time, but it is more than likely that a completely redesigned bolt and extension will be developed for this cartridge. What exactly will be needed as far as strength will be determined by the pressure readings I get from the...

Yes it may, but again you run into the big difference in brass availability and price. $25/100 for once fired 308 versus $46/50 new Hornady

I have seen the WSSM uppers, but going that route leads to brass scarcity and increased cost. The bolt being developed will still be steel; 9310 with a proper heat treat will be used. The differences will be in where material is added to prevent breakage.

Possibly, but the price and availability of 458 brass versus the price of milsurp 7.62x51 brass is night and day. Also, the operating pressure of 458socom is 35k psi. As you choke that case down, the same powder charge increases pressure, forcing you to down load the cartridge. That would hurt...