alamogunr
05-14-2016, 12:55 PM
I've started to set up my new-to-me RL550 to load 9mm. I'm going to use 147 gr. powder coated cast boolits because I can get them fairly inexpensive. The company I can get them from is located less than a quarter mile from my home.
http://www.shop.blackbulletsinternational.com/main.sc
My problem is determining what data to use for powder charge. There seems to be a conflict between cast and jacketed on what OAL to use. Although I'm not loading to max, I still don't want to seat too deep and raise pressures.
Factory 115 gr FMJ 1.100" OAL
Range PU(Loaded) 115 gr Approx 1.140" OAL
Load Manual Data
Lyman Cast #4 147 gr cast Lyman 356637 1.058 OAL
Lyman 49th 147 gr FMJ 1.115" OAL
Accurate #2 147 gr RN Lead 1.140" OAL
Accurate #2 147 gr FMJ 1.095" OAL
I'm guessing that these variations have something to do with bearing surface but I still don't know how to arrive at a safe powder charge and OAL for a load with the purchased PC bullets. The bullets themselves are .649" long without grooves.
I'm going to be loading, not only for myself, but for my son and grandsons. The powder charge will probably have to be varied slightly depending on whether the starting load will cycle the guns and assuming the bullets don't go through the target sideways. I will be shooting them in my guns before letting them shoot any.
Any help or advice will be appreciated.
EDIT: BTW I've got Unique, Bullseye, Titegroup(not much) & Red Dot that might be suitable to load.
http://www.shop.blackbulletsinternational.com/main.sc
My problem is determining what data to use for powder charge. There seems to be a conflict between cast and jacketed on what OAL to use. Although I'm not loading to max, I still don't want to seat too deep and raise pressures.
Factory 115 gr FMJ 1.100" OAL
Range PU(Loaded) 115 gr Approx 1.140" OAL
Load Manual Data
Lyman Cast #4 147 gr cast Lyman 356637 1.058 OAL
Lyman 49th 147 gr FMJ 1.115" OAL
Accurate #2 147 gr RN Lead 1.140" OAL
Accurate #2 147 gr FMJ 1.095" OAL
I'm guessing that these variations have something to do with bearing surface but I still don't know how to arrive at a safe powder charge and OAL for a load with the purchased PC bullets. The bullets themselves are .649" long without grooves.
I'm going to be loading, not only for myself, but for my son and grandsons. The powder charge will probably have to be varied slightly depending on whether the starting load will cycle the guns and assuming the bullets don't go through the target sideways. I will be shooting them in my guns before letting them shoot any.
Any help or advice will be appreciated.
EDIT: BTW I've got Unique, Bullseye, Titegroup(not much) & Red Dot that might be suitable to load.