what is the upside?

I have just sold 2000oz of silver and some shares that werent looking fruitful. I am looking to invest and favour silver miners, I think the medium term out look for silver is good and thought a silver miner would give some leverage. However there are other stocks in different sectors I think have potential to multi bag in the next year.

I know this is a bit simplistic but I see 2 silver miners on the ASX one has a market cap of about $150m the other about $80m. These companies are in production. IVR is a fair way off mining and its market cap is $62m. So what can we expect the value to go to under different scenarios? Is the resource so good the shares will double or more on the JORC? To do that the resource and the costs of mining would need to be significantly better to those of the existing silver miners.