G'day Blokes and Lasses. For the past 40 odd years I have employed a Tikka M55 in .17Rem cal. to handle my varmint shooting. It has been re-barreled 4 times and the last barrel was beginning to show signs that it was past its most accurate life. Also I found I could no longer buy new brass for it and the cases I had were showing serious signs of end of life. I thought I could resize the .204Ruger brass but that was out of the question, so the decision to have the old rifle re-barrelled again but to a more modern calibre was made. The .204Ruger was the obvious choice because of the head diameter. In due course it was collected from the gunsmith and put into service. What an eye opener it has turned out to be. Accuracy as good as the .17Rem and incredible stopping power for such a small cartridge. Reloading it with Pro Varmint at 29 grains with the 24" barrel it is pushing the little Hornady 32 grain V-max pill to just on 4,000fps average. (tried the factory Hornady loads and they averaged 4,095fps) chrono was a barrel mounted magnetic chromo. Groups were astounding with 5 shot groups consistently under 0.3". Plus the wind does not have as much effect as it did on the .17Rem. I shoot wild dogs with it and so far not one has taken a single step after the projectile strikes. Obviously the hydraulic shock from these wicked little things is instantly fatal. My shots are always taken at the head or if side on the heart/lung area. On many occasions wild boar will come to the animal carcasses I have laid for the wild dogs, they are a nuisance because they keep the wild dogs from coming in, so I have used the .204Ruger on them as well and the killing effect is amazing on such large heavily armoured animals. Admittedly the range has been from 100 to 200 yards but again the boars just drop on the spot. Have any of the forum members been using the .204 Ruger? If so I would love to hear what you reload as I have not tried any other loads than the one listed and the factory loading from Hornady. I have heard that the 1:12 twist that I have is not good for the 40 grain pills, is that right? Oh and BTW Merry Christmas coming up hope you all have a great one. Ours looks like being a pretty hot time.