Whew...I thinking a little closer to Hamilton or St Cathrines...Elwood's shop is a long way off for you...isn't it called Grampa's Cartridges now? I like to stop, there when ever I go fishing in Gravenhurst...It's a good place to sniff out Newton rifles...every time I stop there are at least three..I've only seen one .33 Newton Rifle and it was there (.33 Newton is the very same as 338 Win except without a belt)...you can spin the belts off 338 brass and away you go...
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The only take-down Newton rifle known to exist sleeps in Hamilton...it's a two barrel set...probably made by Flues after the demise of Newton Arms
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an ultra rare L C Smith 12ga Marks Grade sidelock (about like a Specialty grade) sleeps in Ft. Erie.
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over two dozen folding Burgess shotguns, that were ordered by NY Police Commissioner Teddy Roosevelt wound up going to St. Cathrines in one lot.
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a couple of different piles of Tobin parts remain near Woodstock..