Rocky, yes Sir this rifle uses a "Detachable Box Magazine". I would check with MDT for a possible compatible higher capacity magazine : https://mdttac.com/us_en/mdt-metal-magazines-short-action.html

Yes Rocky, it is a four round detachable box type magazine, and I could not find a larger commercially available replacement magazine. The aftermarket mag suppliers probably don't believe it worth their efforts and expense to produce a larger capacity aftermarket magazine for a bolt action hunting rifle.