.277 fury cases for high pressure .243

[Wolfdog91]

And you know the person actually read all the comments on this thread? How about all the people who looked at the video before there were any comments?

If your just flying off the handle and doing stuff without researching further or trying to get info im sorry your a bit of an idiot. Especially if you on a forum like this.

"O hay some random guy online posted this video by this other random guy online lemme not look into this any further and go do what the guy did in the video "

Like if your coming to a forum and doing that then IDK what to tell you.

Makes more sense to me to actually talk about something that could be a problem and possibly help someone not do it vs just not say anything and when someone see no flak that go blow there faces off.

Like I've made a few posts on here of videos that I thought were neat but where outside of my wheelhouse. I said hay these guys are experts lemme post over there and get some opinions on this because I don't see a problem but they might. Just to have those posts deleted. Probably would have helped explaining exactly what was wrong with the build or the process vs just deleting it because now I'm just here still not sure and there probably more people like me look at that stuff or trying to learn more who can't who are in the same boat

 

[DiffEQ]

People be wantin' their name on the Darwin Wall.

 

[Webster]

So this isn't something I've ever even thought of, not sure how it came across my page but... Guy is taking .277 furry bi metal cases and necking them down/up so he can push rounds at higher pressures for more velocity. I'm not trying to say this should be done or what have you.... But I found. It pretty dang interesting.

Sounds like zero barrel life. Where do you buy an action and barrel that can handle the pressure. What would the rifle weigh. Imagine the recoil. Stupid idea.

 

[TheWashingtonReloader]

So this isn't something I've ever even thought of, not sure how it came across my page but... Guy is taking .277 furry bi metal cases and necking them down/up so he can push rounds at higher pressures for more velocity. I'm not trying to say this should be done or what have you.... But I found. It pretty dang interesting.

Hello all! I am the one who made the ammo and made the videos.

 

[TheWashingtonReloader]

Inputting his basic data in GRT yielded pressures of 134,800 psi when at 56.0 grains of Stabil 6.5 with a 80 grain TTSX. Not sure how the gun stayed together.

I didn't get this same estimate for the pressure. If it was this high I never would have attempted this. Clearly my gun didn't blow up. This is the future of ammo.

 

[TheWashingtonReloader]

Did you use his velocity to true the numbers, or is that not how it works? Thanks for running the numbers.


If you graph his speed per charge weight...I wouldn't run an optic on the rifle and would pull the trigger with a string. I would also only use that bolt/action for string pull testing from now on. Metal fatigues with hard use, could let go on saami spec 243 round next trigger pull. (All this assuming multiple shots above 100k pressure)

I estimated the speed and pressure and it always came in under my estimates around 5-10%

 

[TheWashingtonReloader]

Sounds like zero barrel life. Where do you buy an action and barrel that can handle the pressure. What would the rifle weigh. Imagine the recoil. Stupid idea.

Barrels are typically tested to 130k. Double the book pressures. Not a stupid idea. But the recoil HURT!!!

 

[Wolfdog91]

Hello all! I am the one who made the ammo and made the videos.

Hay bud ! How it been working out ?

 

[TheWashingtonReloader]

Hay bud ! How it been working out ?

Overall I feel that it's been a success. I had some heavy bolt lift on the last 2 .308 rounds but no primer cratering or ejector swipes. I've even reloaded and shot some more .308 in my father in laws rifle. But those were more tame.
In the comments someone asked about does. I just used my full length. .308, 6.5cm and .243 Hornady dies. No problems. I guarantee that these type of cases and the new 7mm Backcountry cases ( made of a special steel alloy) are the future of reloading.