I've seen pics of a person taking a deer with a Bushmaster ACR that had a 10 round magazine. Is this legal in Ontario?
When big game hunting in Ontario, the limit for centre-fire semi-auto rifles is 5rounds.
That is in the regs. The first bunch of red pages I believe. I'll say it is more than likely, the magazine was that of a 10round body permanently altered to fit 5 cartridges.
To my recollection, there is no mention of magazine capacity used on any particular firearm type when hunting small game with a rifle.
As others have pointed out when hunting with a shotgun for any legal game species in Ontario, the shotgun cannot contain more than three shells. That is also in the regs. Again, it's in the same bunch of red pages at the front of the booklet.
To the OP: your question is a totally valid question, and one that I have asked myself. I Did not get my answer in writing from the COs office; so here is my take....YMMV
Say i am hunting grouse, partridge, ptarmigan using a rimfire rifle; legal to load 10, 15, whatever rimfire magazine capacity.
Say I am hunting coyotes in a WMU that is open all year round and during that time of year there was no open season for any big game. I am using a bushmaster ACR that happens to function with a 10 round pistol magazine. Legal to possess, legal to contain that number of appropriate cartridges for the rifle chambering, legal to carry and use for hunting purposes…?
That's what we wanna know right? Has it been done before? Sure.
Say that I am hunting gophers with a JR carbine chambered in 9 mm using hollow points. (Ballistic properties aside) it would be legal to use for small game using hunting ammunition (lead, HP etc) legal to use 5 round rifle magazine capacity. Legal to own, legal to possess and legal to use for hunting by the books standards. Legal to use a 10 round pistol magazine for hunting...? Again, that's what we all wanna know. Have those 10 round pistol magazines been used in rifles while hunting small game? Sure they have.
In this country, we have the law administering the LAW. Occasionally the law (think LEO/CO) is un-informed or maybe overzealous. Nevertheless, it is up to you to hunt ethically and make choices you are comfortable with.
I personally see no mention within the regs about the use of pistol magazines while hunting small game in Ontario. Does is mean that we can't do it? I think not necessarily...again your mileage may vary.
My apologies on the lengthy post. It's something I do share an interest in and just wanted to cover a few different points