Ed Harris
posted this
10 October 2012
I have been using the H&R CR45LC handi-rifle with peep sight for accuracy testing of my .45 Colt ammunition. I have quit working up loads and have standardized on one only.
Most accurate load I have found of all tested so far is the Saeco #954, 230-gr. flatnose cowboy bullet, cast 12 BHN and lubricated with diluted Lee Liquid Alox, loaded, as-cast and unsized at .455” in Starline cases with WLP primers and 6.5 grains of Bullseye. Bullets are seated to and roll crimped in the normal crimp groove using the RCBS Cowboy dies. I am not using the Lee Factory Crimp die because the chambers in both my guns are sloppy enough that they don't need it.
Velocity is 1093 f.p.s. from the H&R carbine and 900 f.p.s. from my Colt M1909 DA New Service revolver with 5-1/2” barrel. Standard deviations of 10 or 12-shot strings are in single digits.
Firing the rifle from sandbags, using a peep sight, six consecutive 5-shot groups at fifty yards averaged 1.63” with the largest group 2.45” and the smallest 1.2".
From the New Service Colt, firing from sandbags at 25 yards, single-action, six consecutive 6-shot groups averaged 2.19” with the largest group 2.93” and the smallest 1.68". Considering how hard the tiny sights are to see on this revolver I consider this quite good.
FYI for those who are curious, the otherwise same shape 260-gr. Saeco #955 also shoots best with the same charge of 6.5 grains of bullseye, which is a full-charge load. However, it is less accurate than the 230-gr. #954 in my guns, about 2-1/2” at 50 yards from the rifle and at 25 from the revolver.
If anyone wants to try the heavy cowboy bullet in your guns I have available 4-cavity blocks for sale or trade which drop .455-.456 in wheelweights. Was good in S&W 25-5 with oversized throats, which I don't own anymore. I'm buying another set of #954s.
PM me if interested. 4-cavity blocks for $75 shipped Priority Mail to your door.
73 de KE4SKY In Home Mix We Trust From the Home of Ed's Red in "Almost Heaven" West Virginia