I understand that the steel base of the fury cartridge is needed because of the high chamber pressures, but why didn’t they just make the whole cartridge out of steel? Wouldn't it be cheaper and I thought that that was part of the point with the NGSW program as the U.S. Army wanted to get away from brass to a cheaper alternative?
>>65145322Brass has desired properties in the chamber, while steel has desired properties at the base
>>65145322Thermal conductivity and chamber extraction.
>>65145360>Thermal conductivityWhat benefit do you think high thermal conductivity offers for a case wall material?
>>65145403I should have said capacity.
>>65145322Brass is better in the chamber it because it is more ductile. The cartridge being potentially cheaper was a bonus, but not necessary.
>>65145411What benefit do you think high thermal capacity offers for a case wall material?
>>65145322full steel case like these are already patented, the company that made them is defunct but the owner still register the patents in his name, the round were originaly made in 9x19 but the patent apply for all types of cartdriges.
>>65145462Full steel cases have been made for over a hundred years already.Patents are granted for a maximum of only ~20 years and you cannot patent something where prior art already exists.
On the reft is China's new 6.8x50mm. It is their furry.
>>65145360thermal conductivity is undesirable, it is why polymer cased ammuntion can go for substantially higher round counts before cookoffs
>>65145322>the steel base of the fury cartridge is needed because of the high chamber pressuresNo, it's just to save weight.They made the thickest part of the case where the most weight would be gained in an all-brass cartridge, and made that part out of a less dense metal instead of making the brass thinner
>>65145481Paper tigers with shitty ammo. Outstanding
>>65145481>this baby will key hole like you've never seen before, gweilo
>>65145481>It is their 7mm-08ftfy
>>65145458It's a heatsink.
>>65147497>No, it's just to save weight.What are you smoking!!! Stainless steel has a significantly higher yield strength than brass, allowing higher chamber-pressure levels.
>>65147535A myth, brass conducts far more heat into the chamber walls than it pulls out of the rifle.
>>65147503>tungsten-core>shitty ammoall fun and games until it claps an esapi
>>65147703You're a myth.
>>65147535So you are taking more heat from the combustion event that would have otherwise gone into propelling the bullet and using it to make brass hot, ingenious.
>>65147801That is not how heat works, retard.
>>65147807nta but it actually is part of the reason why polymer cased ammunition is higher performing
>>65145469That Anon is a bit stupid. He's trying to talk about the company Shell Shock, that pioneered these two-piece case designs. Although in their 'case', they went with a high nickel alloy steel.
>>65145322The manufacturing will be difficult. The steel will have to have the characteristics of brass at the front end (or close to - there are soft steels). But then at the back its got to be tough to withstand extraction and high pressures. Its not impossible to have two types of steel bonded or concurrently prepared in the one piece but it is difficult. There is lots of steel case existing already. I suspect what >>65145322is it was just the simplest way to get to some pressure number/bullet energy at the time.
