Decent discussion.
Here's CO's 18-1-704.5/Make MY Day Law:
"18-1-704.5 - Use of deadly physical force against an intruder.
back to top (1) The general assembly hereby recognizes that the citizens of Colorado have a right to expect absolute safety within their own homes.
(2) Notwithstanding the provisions of section 18-1-704, any occupant of a dwelling is justified in using any degree of physical force, including deadly physical force, against another person when that other person has made an unlawful entry into the dwelling, and when the occupant has a reasonable belief that such other person has committed a crime in the dwelling in addition to the uninvited entry, or is committing or intends to commit a crime against a person or property in addition to the uninvited entry, and when the occupant reasonably believes that such other person might use any physical force, no matter how slight, against any occupant.
(3) Any occupant of a dwelling using physical force, including deadly physical force, in accordance with the provisions of subsection (2) of this section shall be immune from criminal prosecution for the use of such force.
(4) Any occupant of a dwelling using physical force, including deadly physical force, in accordance with the provisions of subsection (2) of this section shall be immune from any civil liability for injuries or death resulting from the use of such force.
Source: L. 85: Entire section added, p. 662, § 1, effective June 6. Cross references: For limitations on civil suits against persons using physical force in defense of a person or to prevent the commission of a felony, see § 13-80-119.
Am. Jur.2d. See 6 Am. Jur.2d, Assault and Battery, § § 81-89; 40 Am. Jur.2d, Homicide, § § 173-176.
C.J.S. See 40 C.J.S., Homicide, § § 100, 101, 109.
Law reviews. For article, "self-defense in Colorado", see 24 Colo. Law. 2717 (1995).
Prerequisite for immunity under this section is an unlawful entry into the dwelling, meaning a knowing, criminal entry. People v. McNeese, 892 P.2d 304 (Colo. 1995).
To be immune from prosecution under this section a defendant must establish by a preponderance of the evidence that he or she had a reasonable belief that the intruder was committing or intended to commit a crime against a person or property in addition to the uninvited entry. This inquiry focuses on the reasonable belief of the occupant, not on the actual conduct of the intruder. People v. McNeese, 892 P.2d 304 (Colo. 1995).
Sufficient evidence existed to support trial court's denial of defendant's pre-trial motion to dismiss on the basis defendant had not met his burden as established by the supreme court. People v. Janes, 962 P.2d 315 (Colo. App. 1998).
Trial court is authorized to dismiss criminal prosecution at pretrial stage when conditions of statute are satisfied, and this does not infringe upon prosecution's discretion to file charges. People v. Guenther, 740 P.2d 971 (Colo. 1987); Young v. District Court, 740 P.2d 982 (Colo. 1987).
Defendant bears burden of establishing right to immunity by preponderance of evidence when issue of immunity is raised at pre-trial stage. People v. Guenther, 740 P.2d 971 (Colo. 1987); People v. Eckert, 919 P.2d 962 (Colo. App. 1996).
Fact that a homicide victim was on the defendant's porch does not permit the defendant to claim immunity from prosecution for unlawful entry to defendant's dwelling unless the court finds that defendant believed that the victim intended to commit a crime or use physical force against the defendant. People v. Young, 825 P.2d 1004 (Colo. App. 1991).
Defendant may still raise immunity as defense at trial when pretrial motion to dismiss is denied. People v. Guenther, 740 P.2d 971 (Colo. 1987).
For purposes of this section, the common areas of an apartment building do not constitute a dwelling. People v. Cushinberry, 855 P.2d 18 (Colo. App. 1993).
Where pretrial motion to dismiss on grounds of statutory immunity provided in this section is denied, defendant may raise it as an affirmative defense at trial. In such case, the burden of proof which is generally applicable to affirmative defenses would apply. People v. Malczewski, 744 P.2d 62 (Colo. 1987).
Because this section creates an immunity defense as well as an affirmative defense, and because the burden of proof for each defense is different, when raised at trial, this section poses special problems when instructing a jury. In such a case, instruction based on language from People v. McNeese, which dealt with pretrial immunity, must be put into context so as not to confuse or mislead the jury about the burden of proof with respect to an affirmative defense raised at trial. People v. Janes, 982 P.2d 300 (Colo. 1999).
Defendant did not establish by a preponderance of the evidence that he was entitled to immunity under this section where he could not show the struggle and wounding of the victim took place in defendant's bedroom of the house he shared with the victim. People v. Eckert, 919 P.2d 962 (Colo. App. 1996).
Trial court did not commit reversible error by refusing to instruct the jury that it need only determine whether the victim made an unlawful entry into a part of a dwelling that was occupied by defendant, as defendant failed to show that the bedroom was exclusively his province and that the victim's entry into the bedroom was unlawful. People v. Eckert, 919 P.2d 962 (Colo. App. 1996).
Trial court erred in interpreting subsection (2) as including the concept of "remain lawfully" within the statutory phrase "unlawful entry". Defendant failed to establish the legal elements of this section to bar prosecution where the victim was initially invited into defendant's residence and, after arguing, was later asked to leave. People v. Drennon, 860 P.2d 589 (Colo. App. 1993).
The reference to "uninvited entry" in subsection (2) refers back to the term "unlawful entry" used in the same subsection. People v. McNeese, 892 P.2d 304 (Colo. 1995).
Victim's entry was unlawful and uninvited for the purposes of statute providing immunity for use of force where wife of murder victim did not have authority to invite the decedent into defendant's apartment and was staying with the defendant on the condition that she not invite the victim into defendant's apartment. People v. McNeese, 865 P.2d 881 (Colo. App. 1993).
When this section is being used as an affirmative defense, it is error for a jury instruction to place the burden on the defendant to prove the affirmative defense. People v. Janes, 962 P.2d 315 (Colo. App. 1998).
Applied in People v. Arellano, 743 P.2d 431 (Colo. 1987)."
Despite all its "granting" of a homeowners' "authority to shoot," - seemingly, at will, it's illustrative to note the further decisons of this same law.
Couple other legal-beagle things from legalese prior to & after, in statute's orders are worth reading.
Need a goodly link, PM me. I just can't right now. A quick post to describe the actual law AND decisions afterwards. It'll all get twisted in court, & Chey (?) is correct = a jury will decide, but only IF you have the misfortune to have a politically aspiring DA/prosecutor AND you don't invoke an affirmative defense immediately at any pre-trail hearing, etc. ... could get very complicated rather quickly.
Tight lines. folks.