Some excellent info on installing shotgun chokes. This way you will know what can and can't be done.
https://www.briley.com/c-408-choke-i...ation-faq.aspx
List of their Canadian Dealers. Calgary Shooting Centre had a German trained gun smith last time I was there. He did some work on a rifle for me, very good quality, reasonable price. Would be worth a call re chokes.
Canada
Lawry Shooting Sports
(Briley Thinwall installation and chokes and accessories)
27 Industrial Dr., PO Box 2153, Caledonia, Ontario, Canada, N3W2G6
Phone: 905-765-3343
www.lawryshootingnsports.com
rick@lawryshootingsports.com
Atlantic Firearms & Shooting Supplies
P.O. Box 28101, Dartmouth, Nova Scotia, Canada, B2W 6E2
Phone: 902-830-6969
sales@finarms.ca
Calgary Shooting Centre Ltd.
(Briley chokes and accessories)
Bay 4, 7130 Fisher Road S.E.Calgary Alberta T2H 0W3
Phone: (403) 451-1777
john@theshootingcentre.com
Cambridge Sporting Arms
(Briley chokes and accessories)
741 King St E, Cambridge Ontario, N3H 3P2, Canada
+1.519-653-3085
Dante Inc.
(Briley chokes and accessories)
6851 St. Dominique, Montreal Quebec, Canada
Phone: 514-271-2057
aldo@dantesports.com