Hi @janeejane, I'm glad that you found this article useful and have connected with members like @dorisena, who has personal experience to share with you.
Having to navigate frequent mood changes and never knowing what to expect are exhausting. No wonder your nerves are frayed. I know that many on Connect have had to manage such conditions, and that you have been getting some ideas from other members here and in the Caregivers group https://connect.mayoclinic.org/group/caregivers/ where this is a common topic of discussion.
However, abuse is never okay, even if the disease may be (part of) the underlying cause. You must keep yourself safe. And I see that you are taking steps to do that. You may also wish to visit the National Domestic Violence Hotline website http://www.thehotline.org/ On this website you will find tips and resources, as well as a phone number to call 1-800-799-7233 or you can use the online chat and get help without saying a word. By calling the Hotline, you can work with professionals to find a safety solution that is right for you.
A gun is something to take seriously. Am I correct in understanding that your husband no longer has access to the gun because the case lock has been changed? Do you keep the ammunition locked up separately?
Do you get respite from caregiving?
Great resources, @colleenyoung - I would add that in general, if you feel your safety is compromised, physically leave the situation immediately and call 911.