Racer X (and the rest of you guys):
I took my SRH to the range this past weekend to test more loads. As I said before, I'm looking for a load that will come to the same POI as my Ruger-T/C only 45 Colt loads which are 255g SWC's over a stout load of 2400. Here is what I got:
My first shots were with the 45 Colt ammo. The first two from a clean and cold gun placed about an inch from center at 25 yards and were about an inch apart. The third, fourth and fifth shots all made one ragged, oblong hole about 3/4" left of center. The hole was about 3/4 of an inch in length and barely over 1/2 inch in width. I was impressed to say the least.
...by the way, I did no sight adjusting on this trip. I only wanted to compare group size and to measure distance from center. I can adjust the sights later as necessary. Also, the revolver was fired from one of those cheapy, plastic Calwell pistol rests. I think I paid $9.99 for mine, on sale. I did not fire these from some expensive Ransom rest or the like.
The next loads tested were 454's using the 240g XTP's over 28.5g to 30g of 2400 and also 36.5g of H-110. All five-shot strings were 1.5 to 2.0 inches and all were roughly 1 inch low and 1 inch left. Many of the groups fired had two or three bullets passing through the same hole. Basically, it appears that these loads will match the POI with my 45 Colt loads and all prove to be fairly darn accurate. According to literature values I have read, these loads should be moving out anywhere from 1,650 to maybe 1,800 fps, maybe more...
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The Hornady manual conflicts with the Lyman manual, however and the Freedom Arms data falls somewhere between.
I also re-tested the 325g FPGC bullets from Western Bullet Co. These were seated over 21.5g of 2400. My guess is the velocity is around 1200 to 1300 fps. (does that seem right to you 454 shooters?) The group landed about 1/2 " left of center and 4" high from center with a five shot group of 1.5 inches.
These 325 grain bullets are much cheaper than the 240grain XTP's and I suppose I could live with adjusting the sight "X" number of clicks when I shoot the 45 Colts vs. the 454's.
So when considering the above info, Racer-X, I think I have a bit of a change in heart for my 454 SRH. I believe it just may shoot ever-so-slightly better than my Blackhawk. Of course, my Blackhawk is nearly 20 yrs old and has easily over 10,000 rounds fired though it. I have to say, as I drove home from the range on Saturday, I had a rather good feeling for my SRH and am now very glad I bought it. It's a big, ugly, mean, yet accurate machine! I now change my vote to strongly recommending that if you do consider buying a SRH, buy the 454!
I would still consider working on your Blackhawks too, however. Try some new loads etc. They should shoot better than what you've been getting from them.