The .204 Ruger in my opinion has the same fault as the .223 in that factory issue bolt actions stick with the 1in12"twist,limiting it to light bullets and limiting the range.The ones I have seen at the range with something like a 1in8" twist,using 50gr and 55gr bullets were making tight groups at 400yds to 500yds with the best at 500yds under 2" using a 55gr bullet.The rest of the problem was these were AR type platforms with high dollar uppers.The ammo had to be hand loaded and was a little pricey but still cheaper than factory loads with lighter bullets that made a 400yd shot iffy.I dont understand why bolt action mfg,s wont use a tighter twist which has been proven to stabilise heavier longer bullets and still do fair with light bullets.Maybe it,s barrel life. samuel.