I had a Ruger 77/22 magnum, was okay accuracy wise I shot thousands of rabbit's in uk with it then I felt it just seemed to lose accuracy somewhat so when the 17 HMR came out I imported a 17 HMR fluted stainless barrel from Lilja. USA.
Its been a laser beam since I fitted the new barrel so not sure I am comparing like for like but the Lilja shoots almost 1 tiny hole at 100 yards and is devastating on possums, hares and rabbits but I found wallabies were pushing the envelope but the 40 gr 22 magnum would be a better choice in my opinion for wallabies and my mates use them after wallabies.
I've only used the Hornady 17 gr maybe the heavier projectiles might be better.
One time I could only get 22 magnum full metal jacket thought I was missing everything went back to the 40 gr jacketed soft point no more missing! I could only get Winchester 22 mag at that time I had my first 22 magnum it was a Marlin back about 1980 ish it was a great inexpensive wee rifle.
I think I also fitted a Timney trigger way back 2005 / 7 ish to the Ruger.
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