The fact that larger calibers are required (not for ethical reasons) makes it easier to get non-lead bullets. When they start pushing for non-lead for rabbits and foxes then it'll become an issue as less options exist in the smaller calibers from what I've seen. Anything from about 7mm upwards generally has plenty of non-lead options. I'm talking about bullets of course, I have no idea what sort of supply exists for factory ammo with non-lead bullets.
The real issue is supply, and to a small degree, the cost. Brass or copper bullets are generally at least two or three times more expensive than conventional bullets, for people like myself that buy bulk cheaper bullets the cost might be as much as ten times more. But if the law changes overnight, the first few people grabbing what's on shelves will mean a dearth of bullets for the vast majority. People with lathes can turn out their own bullets with a modicum of experience - deer hunters don't use many bullets so spend a day on the lathe turning out perhaps a hundred nice bullets and you're probably set for a good few years. It wouldn't take long for CNC businesses to make room to turn out bullets, but they'll be even more expensive, at least initially. The simplest and cheapest short-term fix would likely be casting zinc bullets, not much harder than casting lead ones.
Most deer hunters don't use a lot of ammo in a year though, so even though the ammo cost might become extreme I don't think it'll be that big a blow on top of the costs we already put into going hunting. Let's say you go bush for a couple days and fire three rounds, one to check zero, one to drop a beast, and perhaps a second beast or a finishing shot. Nowadays with conventional bullets your ammo might be between $3 to $15 in the cost of the trip, for a handloader and somebody using premium factory ammo in something obscure. Having to switch to copper bullets that cost might jump to between $10 to perhaps $25 - I don't think non-lead factory ammo options are that much more expensive than premium conventional-bullet ammo. I doubt the ammo cost is going to price hunting out for 99% of deer hunters. The cost of fuel might though.
As for banning lead bullets to outlaw hunting that makes no sense to me. Many, many hunters burn a whole lot more ammo hunting rabbits, foxes and pigs than ever gets spent in deer hunting, they'd be far better served banning lead for hunting those if they want to make hunting completely unviable - even California hasn't managed that yet as far as I'm aware. In Victoria, our regs only call for "projectiles", we're not required to use bullets (the specific type of projectile we use with rifles) so anything that you can fabricate to pass through the bore of whatever firearm you're using becomes a projectile and is technically legal. Being a country with a strong DIY and "get her done" credos I think we would quickly come up with other options to do the job.
MG5150 wrote:1. Attack on Hunters and Firearms Ownership: The ban on lead ammunition is a direct attack on hunters. Victoria’s laws require specific calibres and bullet weights to hunt deer ethically. If lead is banned, there may be no alternatives, leading to the government arguing that your guns are no longer needed and thus justifying their removal.