I have seen so many good rifles destroyed by using corrosive ammo, that I would never use corrosive ammo my self, in my guns.
Army could cope with corrosive ammo, because they require frequent cleaning from GIs. They have time for that.
But that type of frequent cleaning is hard to be expected from average civilian and rifle user.
I was frequently shooting in my younger days, yugo mauser 98 clone, with surplus ammo.
The rifle required thorough cleaning at least for next three days, after shooting.
Only if done properly by the end of third day cleaning, a clean patch would be coming out.
Next what I noticed, all clubs rifles, that used corrosive ammo, after some years have been destroyed.
That said, just make sure surplus ammo is not corrosive.
Then do whatever you like with it. Reload with hunting bullets, or just do the training at the range.