We bought our son a sig sauer 1911 22lr pistol every since we got it its been jamming expelled shell casing caught in the chamber is the most common .I've tried getting the better ammo cci brand instead of the remington 500 count the cci brand is about the same price but only 100 rounds any suggestions would be appreciated before I send it back to the factory thanks k.c. and my impatient son Justin
Welcome K.C.
First, I don't know you're experience so I'll cover the basics.
1) It's a new gun. It needs to be disassembled and cleaned.
Get some cleaner like Hoppes #9 or Hoppes Elite field strip it and clean it up of all the factory oil. New guns come with a thicker oil that acts as a preventative against rust opposed to a lubricant.
2) Now you need to lube it up. Be careful not to over do it - burnt powder will accumulate in areas of access lubrication.
Which lubricant you choose is a highly debatable topic but as long as it's a specific gun lube you'll be fine. Take your pick in the hunting section at WalMart or a local gun shop - Miltec, CLP whatever
MOST 1911 .22 lr come in the form of conversion kits with a slide barrel and mag combo that fit into a .45 ACP frame and MANY folks continue to experience issues UNLESS they use CCI Stingers. I haven't heard any reviews on that specific Sig 1911 .22 model. That's a big, heavy slide on the Sig 1911, even if it's aluminum for cheapo .22 ammo.
Stingers are pricy but have more umph to rack the big slide.
Even many folks with Sig Mosquitos have to use Stingers or mini mags, but some people can use cheaper bulk ammo without issues.
Pick up some Stingers and a Federal value pack. Run a few mags of the the Stingers first to see if it's functioning properly, then move to the Federal ammo and so on.
Get that thing cleaned and let us know how you make out!