Hi Jacker ( that doesn't sound quite right
) when I started to make my own sausage I used the kenwood chef mincer and attachment, it worked fine for what I was doing but what usually happened was I would force the meat into the mincer whilst the other half tended to the filling end. I wouldn't say it was hard, but it certainly wasn't easy.
Have a look at the post and subsequent attachment I have posted re' the sealant gun from Lidl. It's only £3.99 and is easy to use. You would probably need a funnel to fit it, but it does come with 2 x nozzles for the sealant. As an experiment, I have cut off the very thin end, placed the nozzle in boiling water and then forced the handle of a wooden spoon through it and left it to cool. It now has a 'bore' of around 1/2" which is good enough to get you started until you can find a wider one to fit. It' is only 2.5" long but you will be able to fit on enough casings for a few pounds at a time.
Hope this helps.
Yotmon.
"Success is going from failure to failure without a loss of enthusiasm." - Sir Winston Churchill