To Redirect Blogger URL to another URL, you need to do following steps :-
1) Log in to Blogger dashboard --> layout --> Edit HTML
2) Scroll down to where you see <HEAD> tag
3) Add below code into your template just after <HEAD> tag
<meta http-equiv="refresh" content="0;url=http://yournewurl.com"/>
Your Code will look like this :-
<head> <meta http-equiv="refresh" content="0;url=http://yournewurl.com"/>
4) Now Replace http://yournewurl.com with New URL
5) Click on Save Templates and you are done
Now your blog URL will be redirected to New URL/Address