Bet money on? Hey man, I lay my neck on the block with whatever claim I make!
The LFN is more streamlined than the WFN or WLN, and this flight form is very helpful in getting long range accuracy. The closer bullet length gets to a rifle bullet the closer accuracy gets, within the stabilizing ability of the rifling twist of the gun of interest. For yours and approximate 1200 fps velocity, a 300 gr is unbeatable. If the revolver will handle a .5 nose length, and one wants to send out a bit more energy, 320 grains gets the nod, and in fact, this bullet when loaded with 296/H110 to maximum pressure, if gas checked and lubed with one of the LBT bullet lubes, will produce about three times as much energy as full power jacked loads. A 300 gr with .45 nose, about double jacketed energy. Everything about it is fine tuned for efficiency, and a chronograph will proove it. -- I have many customer reports from both of these weights, producing 1 inch and smalleer 5 shot groups at 100 yards, from guns which have lapped barrels, cylinder throats slightly larger than barrel groove diameter, and bullet diameter fitted close to cylinder throats. Of coarse cylinder throats must be in fairly close alignment with the barrel. If one or two are out, they will open the group. If one has this problem the bad cylinder can be marked and not used when trying to show off and make other shooters hate you! The best accuracy report to date was two 5 shot groups in a row, at 100 yards, both under 3/4 of an inch. The shooter told me that he had gotten two groups under an inch, then a wittness called and wanted a mold just like his, because he watched him cut two groups under 3/4 of an inch. I didn't argue with either of them!
Let me tell you right here and now. If MY shooting had to be depended on to proove maximum accuracy potential, I wouldn't be talking about this kind of accuracy! I can make a quart oil jug leak real bad with a cylinder full at 100 yards, off hand, but can't talk about personal groups under 4 inches at 100 yards!
My favorite weight is 280 gr, loafing along at about 1200 fps, becauce I get a lot more kick out of shooting when I'm not getting kicked to much when the hammer drops! And I don't feel bad if only one or two out of a cylinder full hits the oil bottle at 100 yards!
I must expound a bit on how to shoot a revolver for maximum accuracy. (Though I've written about it before on this forum.)-- Rest the barrel out near the muzzle on anything that won't scratch the barrel, but rest ONLY ENOUGH TO TAKE THE SHAKE OUT! DO NOT REST ANY PART OF YOUR ARMS ON ANYTHING! Set your sights while shooting this way and you'll find point of impact doesn't change when shooting offhand, though groups will open up without the rest. In the field it is normally possible to grab some sort of rest for the barrel and you'll be able to tag your game at far greater distence than if you sight any other way. If you rest your wrists as is often recommended in the gun rags, the revolver but cannot rotate back and down like it does when shooting off hand, and the muzzle will wobble all over the place, so sighting cannot be nearly as precise. as with a rested barrel.