Looks like there's a lot of knowledgeable 6-gunners here, so maybe somebody can give me an idea of what to try with my gun. I've always wanted a SAA, so I came across one reasonably priced a few months back and bought it. Its a 3rd generation made in 1978 with a 7.5" barrel. After plinking with it a while, I decided I want to try to kill a deer with it this season.
I've got many years of experience in reloading, but this is the first attempt to load for a revolver. I've been very disappointed to find that every load I try shoots high - most of them over 6" high at 25 yds. I've done a lot of reading and wanted to develop a load with 250g Hornady XTP, and also a load with a hard-cast Keith bullet. I found some XTP locally and loaded and shot some Friday. I had some Unique and Blue Dot, so I decided to start with those powders.
I have a copy of Ken Water's Pet Loads book, and found good info from him on the .45 colt. He divided the .45s into 3 categories - true Colts made before 1905, modern Colts and clones, and a 3rd category for TCs and Rugers. The loads that he recommended for modern Colts like mine are hotter than what I've seen in reloading manuals, but Ken knows what he is talking about and I felt safe using his loads. I also used his method of measuring for case expansion in working up the loads.
I haven't gotten great accuracy with anything, but the better loadings gave me 2.5 - 3" groups. The Unique loads are dead on L-R, but about 6" high. The Blue Dot loads shot an inch or 2 to the left, but were also high, though the hottest one was slightly lower, about 5". I had some Hornady Leverevolution factory 225g ammo and they shot only 2" high. Winchester Cowboy loads with 250g lead bullet were 7" high and 5" R. All these were shot from a sandbag, but I was careful to keep the barrel off the bag and the rear of the grips from touching anything. Velocity ranged from 705 for the Cowboy loads to 943 for the Hornady factory load. My fastest Unique load ran 916 and the fastest Blue Dot load was 907.
I am not quite at the max for Ken's Unique load, but I'm only .5g under it. Using data at the Alliant site, I can go 1g higher on the Blue Dot. From all that I know about trying to get a revolver to shoot lower, I've got to figure out some way to get it out of the barrel faster, so that means either a lighter bullet or more velocity with the bullets I'm using. If that fails, I guess I've got to have a new, taller front site installed. I'd prefer to not do that to a SAA. I don't think my shooting technique is the problem. I've been shooting Contenders for years and have killed a dozen or so deer with one. This gun shoots high no matter how I hold it; others have shot it with the same results.
Anyone got any ideas to try? A 200g bullet might solve the problem, but finding a decent 200g bullet in .452 size is not easy. I haven't tried a hard cast bullet yet - is it possible that they might shoot lower? I wouldn't mind at all hunting with a 250-255g hard cast bullet at 900 fps or so; just drill a .45 hole all the way thru the deer and that should do that job. But no point in trying that if its likely to shoot as high as the XTP.
I've seen recipes with other powders that get velocity up above 1000 fps, and that might be the best route to try next. I'm not sure whether I ought to buy some new powders or new bullets. Any help from anyone that's already been thru this would be greatly appreciated!
Good hunting and shooting to all.