Sig P365X Macro barrel length, why 3.1"?

[Bluemonday]

I'm trying to understand why Sig went with a 3.1" barrel and a comp for a defensive pistol, instead of just a standard 4" barrel and no comp (or even their 3.7").

My Speer GD 124 runs at 1,150 fps out of my Glock 19's 4" barrel.

Speer makes a +P rated "Short Barrel" GD 124 that runs the same 1,150 fps out of a 3.5" test barrel.

So I'm trying to figure out what is the net gain with this short barrel/comp arrangement.

Any thoughts or insights are appreciated.

[GearFondler]

My guess is that's what their marketing dept told them would sell best right now.

[RJ]

Maybe because they could introduce the Macro with a comp right away, not have to wait for a comped 3.7" slide? That way they could use the same 3.1" barrel as on the P365 / P365X (it is the same barrel, I assume?).

I had been hoping they would introduce for us .civ's a 3.7", non-comp Macro i.e. with the P365XL slide on top of a Macro grip. But of course I have the patience of a newt, so I ordered a P365XL X-change kit just to be able to get a slide. I hear tell of some LEOs here and elsewhere say that Sig has this configuration but only for law enforcement...

[GJM]

I have two Macros set up with OEM XL uppers (thanks RJ), and they shoot great with Gold Dot and practice ball.

[HCM]

You want the real reason or the implied reason?

The real reason is gun companies exist to make money, not guns and comps are “hot” right now.

The intended /implied gain is the increased control /reduced shot to shot time offered by a comp. In this case, this style comp is a bit less effective than a traditional comp but the trade off is it will run reliably with a wider range of ammunition than a traditional comp.

While one could argue this comp is of minimal benefit, one could equally argue that the difference in terminal effect between a 3.1” barrel and a 3.7” barrel are so minimal as to be equally inconsequential.

The 365 series are modular handguns. To paraphrase Col. Kilgore “Air Cav = Air Mobile.”

SIG is selling MACRO grips and mags separately. Buy an XL, swap the grip and drive on.

[GJM]

Comparing 124+P Gold Dot in my Macro with an XL upper to a G19 with a Mayhem barrel and comp, the 19 is significantly softer shooting, so I see the benefit of the Macro upper. I am unwilling to trade that reduction in recoil for the degradation in accuracy with ball ammo.

[Bluemonday]

Comparing 124+P Gold Dot in my Macro with an XL upper to a G19 with a Mayhem barrel and comp, the 19 is significantly softer shooting, so I see the benefit of the Macro upper. I am unwilling to trade that reduction in recoil for the degradation in accuracy with ball ammo.

So you're saying if one is going with a 365 over a 19, and is using 124 +P, then the Macro frame with a Macro comp top end is your preference over an XL top end because of recoil/muzzle rise reduction?

[GJM]

So you're saying if one is going with a 365 over a 19, and is using 124 +P, then the Macro frame with a Macro comp top end is your preference over an XL top end because of recoil/muzzle rise reduction?

Sorry if I was unclear. I have no use for the Macro upper because it shoots ball ammo poorly compared to an XL upper. I would run the XL or a PMM on the Macro lower.

[Bluemonday]

Sorry if I was unclear. I have no use for the Macro upper because it shoots ball ammo poorly compared to an XL upper. I would run the XL or a PMM on the Macro lower.

Got it! Thank you.

[D-der]

Just sayin...
A PMM comped XL, IMHO any way,
works pretty well.
Doubt any problems with 8" plates at 30
(At least with my sample of one)
with a little more velocity and a little less
recoil for an additional .5" length.