>guyz barrel length is completely irrelevant! It doesn't change a single thing! It is just aesthetic!
>everyone in /k/
top kek
>>27941018
For whatever reason, the .357 is particularly sensitive to barrel length. It performs much better in a rifle length barrel than a handgun.
>>27941045
>damage control
>>27941045
There is a lot of powder in that .357 that can take advantage of the longer barrel compared to other rounds. Longer barrels allow more gas pressure to build, and the bullet continually accelerates as long as pressure is still building. The more barrel it has to travel, the faster it goes (until all powder is burned).
Who has ever said barrel length doesn't matter?
>>27941018
Has anyone actually said this or am I being baited?
So would a handgun in 45 acp in 3 in barrel would be a waste compare to a 5in barrel handgun.
I have a glock 30s and thinking of selling for a glock 41
>>27942376
Depends on your needs. There's a reason pistols are pistols.
>>27941018
I don't think anyone ever said barrel length is only aesthetic, but kinetic energy alone does not tell you anything. A 125gr JHP can perform identically at 1200fps and at 1450fps. Penetration depths and max expanded diameters can be identical, the only noticeable difference will be the location and size of their TC max.
>>27941045
.357 Mag is a long case, high case capacity. It burns a lot of powder.
>>27941068
Peak pressure is reached extremely quickly, it can happen within an inch of barrel. Velocity continues to increase long after the pressure curve has begun falling. When the projectile is already in motion its not has had to push against, and gas is still expanding even as pressure drops.
>>27941051
It's correct
This is 9mm for reference
>>27942567
Do you have something like this for 9mm but with energy?
>>27941018
>going from ~200 ft-lbf an inch to ~75 ft-lbf an inch after 4"
>>27942704
Both that and OP's graph are from http://www.ballisticsbytheinch.com/calibers.html
I haven't seen any charts for muzzle energy, or vice-versa graphs for velocity, though.
>>27942704
No but you can calculate the energy with the information given.
So, .45acp should gain velocity through say a 17.5" barrel as opposed to say a 4" barrel correct?
Cause the gas pushes the round longer?
>>27942704
I made this for a previous thread concerning CCW revolvers. Note that it was pointed out that the barrel length cited for the semi-auto's includes the chamber which makes this not as valid as my red line suggests.
(I'm not OP)
>>27943191
Yes, up to a certain point. A long enough barrel will start slowing the round down.
>>27943191
16" is optimal
