Good to hear from the land down under. I haven't bought any Retumbo yet but will certainly give it a try. I have tried the cci mag primers but Reminton 9 1/2 seem more consistent. Maybe just my days at the range. 7 mag gets hot quick so I always take 3-4 rifles with me to let it cool down. I've got a 26 inch barrel on this one but the pencil barrel really heats up after 2 shots. This one was punching dime sized groups but started losing accuracy due to copper fouling I hope. Just got back from gunsmith running a bore camera through it and he told me rifling is in good shape but I had to get some copper out. Me and Butchs bore shine have finally got it copper clean after a few four hour sessions. Now to foul 10 or so to get it back to grouping again.