Acme 100gr RNFP
New Starline Brass
S&B SP
2.5gr Unique
OAL 1.375 crimped in groove
32 H&R Ruger Single Six
I made 12 of the above loads yesterday and ran them over my chronograph. According to my Lymans #4 Cast Bullet Handbook a Saeco #326 using 2.5gr should have been about 800 fps. The OAL though is 1.305 vs my 1.375.
My avg velocity for my 12 shot string was 623 fps, well under the Saeco but my OAL was longer which could mean more space in the case, less pressure etc.
Anyone have a Saeco #326 and could give me the boolit OAL for comparison? Also, this is my first 32H&R and dealing with this small a straight wall case in this handgun (Single Six frame). Considering the velocity and almost no recoil, think I should bump up the load until I reach the expected velocity as max load with the 100gr is 892 with 14,800 C.U.P. using 2.7gr Unique. IE: increase powder weight until velocity target is reached paying attention to velocity spikes, primer condition etc. Not interested in hot rodding this gun, just increasing performance to listed.
Many reports of people turning their Single Six's into 327 Fed which are at 2x the pressure being in the 40,000 cup range vs the 15-20,000 of the 32 H&R so I should be OK?
Also an interesting note of Lyman vs Lee. The Lee book gives much different loadings often varying .5-1gr with higher or lower velocities to match. In my Blackhawks i'm not as concerned as long as pressure signs are fine but the Single Six is a much smaller frame and the brass also small so 1 gr is quite A difference.
The Alliant manual is different across the board with almost all loadings above either Lyman or Lee.
Any thoughts on this?