Apply mag_jam_mult to helical and drum magazines

[GuardianDll]

Summary

None

Purpose of change

#74696 added field, that supposed to make drum and helical mags handle damage worse than default. This pr applies it

Describe the solution

Apply field, document how field should be used

Additional context

Chances are following:

[Hyperseeker]

For future reference: assuming we ever get quad-stack magazines and the like (or, say, someone eventually adds one of those as a mod), what should the multiplier be for those? Are they supposed to be as unreliable as drum magazines?

[GuardianDll]

i dunno, even this numbers are pretty asspull imo, both because there is little to no data, and because our damaging system is not very detailed (damage can be only one of five state duh)

[Holli-Git]

For future reference: assuming we ever get quad-stack magazines and the like (or, say, someone eventually adds one of those as a mod), what should the multiplier be for those? Are they supposed to be as unreliable as drum magazines?

We do have quadstacks, and I think some tri stacks

[Hyperseeker]

If we do have those, then maybe it's worth considering what multiplier they ought to have, as well. Maybe in a follow-up PR?

[GuardianDll]

can be here also, but i am really far from knowing how they should behave, so i'd rely on you
(also how to find said mags? searching by quadstacks did not yield anything)

[Hyperseeker]

I don't actually have a good source for magazine reliability aside from those in the other PR; the issue of reliability has not come up until now. Conventional wisdom (which often gets repeated by third parties) suggests that anything more-complicated than a double-stack (which is what your conventional 30-round STANAG magazine is) is not reliable enough for the benefits of higher capacity. I am, however, yet to see actual studies that third parties keep referring to. (Not that I've searched very hard so far.)

I'll see if I can come up with anything. I suspect there won't be a lot, or at least not a lot available online. Ideally, I'd want something like the reliability study by the Army that I'd linked to in the previous PR.

(also how to find said mags? searching by quadstacks did not yield anything)

You have to know how a given magazine works. For example, the 60- and 100-round STANAG box magazines that we have are both quad-stack, which you can tell visually by the fact that they're much wider than your 30-rounder. (These are not the same magazines, by the way, but you can get the idea from the comparison.)

It's called a quad-stack because they stack the rounds inside into four columns, at least eventually, hence the width requirements. (They narrow down to single-stack at the feeding lips.)

For what it's worth, while Magpul was unable to produce a reliable quad-stack – at least reliable to their own high standard – the German manufacturer Schmeisser sells a polymer 60-rounder, which is apparently reliable enough:

When it came to reliability, we fired a mix of 500 rounds through the two mags [Gen I and Gen II of the same model — H.] with just a couple of warning flags to raise. First off, when using brass-cased ammo, we had no problems. The warning lights just went off with imported lacquered 5.56 (looking at you, Wolf), which sometimes delivered a failure to feed towards the end of the mag.

Granted, 500 rounds is barely scientific, but it's something.

[SirPendrak]

For future reference: assuming we ever get quad-stack magazines and the like (or, say, someone eventually adds one of those as a mod), what should the multiplier be for those? Are they supposed to be as unreliable as drum magazines?

We do have quadstacks, and I think some tri stacks

Exodi 60mag is 4-row, same for HUB-01 EXOTIC HWP 60 mag

[Holli-Git]

Exodi 60mag is 4-row, same for HUB-01 EXOTIC HWP 60 mag

Only the HWP is a quad stack, Exodii's 60 rounder's a pan

[Holli-Git]

It's called a quad-stack because they stack the rounds inside into four columns, at least eventually, hence the width requirements. (They narrow down to single-stack at the feeding lips.)

I'm being pedantic here. Magazines being single feed or double feed is dependent on the firearm. Quadstacks could narrow into single or double feed. I think quadstacks have a harder time becoming single feed just because of the friction but I don't think it's impossible

[Hyperseeker]

As a follow-up to this, now that it's merged: is it possible to assign a decimal to the multiplier value? That would solve whatever conundra I might have for complex magazines I add myself (even though it will be a while before that happens).

[GuardianDll]

yes, it's a double under the hood, can do entire 1.23456789