Hi,
The domestic mincers seem to overheat really quiclky . I think you have to get a small commercial one if you intendin mincing any quantities and enen second hand they are not cheap.
The manual l one are slow but robust.
Domestic sausage fillers are available in most kitchen shops
We had a butchershop in Western Australia for a while processing Dexter beef and I purchased our mincer and 5 kilo hand crank sausage maker from ebay. Buy the biggest mincer you can afford, that is the critical factor in making sausages. you can get some great recipes for sausages off the internet, be prepared for some shocks if you google sauage a few porn sights come up. :D
I got one from Nisbets, online catering suppliers. Mine is electric, goes slow but minces OK but you cant put it through twice. Cost me about £90. I am happy with it
have a look on the northern tool website, the one i have is rated at 118kg per hour and it is the dogs wotsits, think it was around 250ish and worth every penny its very heavy and probably weighs 30kg, it will do muncjac in minutes.
There's nothing like practical demonstrations of sausage-making if you want to get the hang of it. Here's a pic of the Midland Dexter Group doing a serious demonstration...sorry, couldn't resist it!