45 ACP using the 152 Grain Semi-Wadcutter Bevel Base “Penn-Maxx” 7th generation bullet. They are supposed to also be accurate at very low speeds.
I measured 10 of the coated version, and got an overall length of 0.5695″ (Range 0.5680 to 0.57) with a weight of 156.9 grains (range 157.4 to 156.5). Pretty good!
I found that some of the Hornady FTX seating stems — for hollow point, or nylon-tipped bullets — worked very well to seat these bullets, because the stem pushed only on the flat shoulder of the round. The nose is very small, and I found that bullets had poor concentricity when seating by pushing on it. I believe it does not “guide” the bullet in well because it is small and sharpish.
|Powder Charge (grains)||Avg Vel||StdDev||Notes|
|3.0gr Clays||639||43||S93. Never ejected or cycled the slide, but always fully cocked the hammer. Worth investigating with an ultralight action-spring|
|3.5gr Clays||738||28 (9x)||S94. Mostly cycled, some failure to lock back slide with firm hold.|
|4.0gr Clays||833||16.23 (10x)||S95. Cycled slide, but failed to lock-back on empty when limp-wresting.|
|4.5gr Clays||914||11.2 (10x)||S96. Very clean holes in paper. Occasional gas blow by.|
|5.8gr (#46) Acc #2||1039||13.41 (9x)||S136. Win Brass.|
|8.4gr PowerPistol||1095||15.69 (9x)||S135. Win Brass.|
From the table above, Velocity (fps) ≈ 91 + 184*grains_of_clays.
Most of these loads are below start loads for a 155gr SWC.
Hodgdon says, Winchester case, Fed 150 Primer, 1.230″ OAL, “155 GR. CAST LSWC”, 5″ test barrel:
Start: 4.9 gr Clays 1,040 fps @ 16,100 CUP
Max: 5.2 gr Clays 1,082 fps @ 17,700 CUP
The total loaded round is about 250 grains, which is neat.