RustyFN
Member
WST is my go to powder for 45 auto. I load 4.9 grains under a 200 grain LSWC. Accurate and very clean.
I loaded them with 5.0 gr HP-38 and they were perfect in everyone of my 45's. XD and XD Tact, Sig 220 and two 1911's. I like them! I might try a little higher powder charge.To contribute some topic-relevant data back to the thread...
Shooting the Cowboy #4 (IDP-#4XD but 12BHN hardness) from my SA XD45 Tac, seating to the top of the crimp groove and applying a taper crimp down to a .472" case mouth worked wonderfully.
HP-38 loaded at 4.6gr resulted in ~50% stovepipes, dirty cases and poor groups. 5.0gr was very reliable with much cleaner brass, better ejection patterns, improved groups and no leading (yahoo!!!). 5.3gr/HP38 produced the highest level of accuracy in my tests however recoil was getting poppy. To make a very rough recoil comparison, 5.3gr of HP-38 with these 200gr bullets reminded me of shooting MBC's 230gr Softball @ 1.225" COAL loaded with 4.8gr of Unique but with less muzzle jump.
Hope that's helpful to someone =D
~ Jech
5.3gr/HP38 produced the highest level of accuracy in my tests however recoil was getting poppy.
My Pro Auto Disk will throw 4.9 and 5.2 gr of W231/HP38 using .46 and .49 disk holes. I have tested the 200 gr RNFP XD#4 at both charge weights at 1.195" OAL against my 200 gr SWC at 1.25" and both charges shot well.