I have a Sig Scorpion Carry. We took it to the range along with a Remington R1 and Springfield Champion Operator Lightweight. We used Remington UMC, Winchester white box, both with 230-gr bullets, and two handloads, one with 200-gr Lasercast and the other with 230-gr Lasercast. All fed without fault in all guns. The Sig consistently hit about 1" higher than the others, regardless of ammo. One of my sons, not content to eat the bullseyes out of the targets, blew out the small text boxes in the corners with it. All shooting was at about 30 feet, standing, hand-held.
We're all fans of Winchester Silvertip and Federal Hyrda Shok. We only fired a few of these more expen$ive rounds, but they fed in all guns without problems. The Sig, BTW, was just out of the box new. The others had already had a couple thousand rounds through them.
The Sig was (or seemed) the heaviest of them all, and none of us liked the rail. It is sharp and, for lack of a more descriptive term, it gets in the way. Tough to find a holster for it, too. Apparently the slide and rail are a tad larger than other Commander-size 1911s.
That said, it's weight made rapid follow-up shots easy. One of our sons is professional military and stole the R1. Another is a cop and stole the Springfield to go with the Operator he stole from me some years ago, so that leaves me stuck with the Sig.
Life sucks . . ..
The attached pic is from the Sig website.