bearhuntr;
Morning to you sir, I hope that you're well, warm and dry on this windy Remembrance Day.
While I wasn't able to find one in .375 and they are surely quite costly, there is a small selection at Stoeger Canada.
https://www.stoegercanada.ca/product-category/rifle-accessories/rifle-magazine/In the past I've ordered Tikka parts from them and they were pretty decent to deal with, so perhaps contacting them might lead to something?
For strange and hard to get parts in general here in Canada, Western Gun Parts in Edmonton is always my first stop. The staff who answer the phone always knew exactly what they had on hand or if they could get it in.
Hope that helps, all the best and good hunting.
Dwayne
