I'm using a limbsaver kodiak for my 22-250 . works good and the rubber material keeps it from slipping off your shoulder . It too has a strong rubber smell .
http://www.canadiantire.ca/en/pdp/limbsaver-kodiak-lite-rifle-sling-black-0755753p.html
http://www.canadiantire.ca/en/pdp/limbsaver-kodiak-lite-rifle-sling-black-0755753p.html