Mongol? Arrowhead from Bulgaria

Today i wanna show you a very interesting arrowhead from Bulgaria.
When i first saw this arrowhead i thought it might be avar but the shoulders right after the head look like other arrowheads i know from today Russia. Mostlikely golden horde arrowhead.
I came to the conclusion it might be from the mongol storm 1241.
Any experts here that can proof that theorie or know other arrowheads like this?
The measurements are
Weight: 18.3g 282grain
Length: 137mm
Blade length: 76mm
Blade height: 8/10mm each three. (one side is shorter than the other.)
Shoulder: 8.3mm
Tang: 4.5mm to 2mm