Ergosphere
Member
- Joined
- Jan 10, 2008
- Messages
- 227
I'm having serious load-data confusion here. I want to load a few heavy but safe Ruger-only 45 colt loads for my stainless Bisley Blackhawk. The bullets will be 300 gr. XTPs in new Starline cases, H-110 powder.
Hornady gives a starting load of 17.9 gr., max 21.7 gr. H-110. I note that Hodgdon says not to download H-110 by more than 3%, yet the Hornady starting load is 18% below their max. Hornady also uses Winchester cases and WLP primers. I can't get WLPs, but I can get CCI 350s. (Also, if anyone has a recent Hornady manual, can you check the OAL for me? I'm not sure which cannelure to use.)
I also note that the Hornady load data differs significantly from both the Hodgdon online data (which uses a different jacketed bullet of the same weight) and Linebaugh's data (which I do not take to be authoritative).
Right now, my plan is to work up several loadings at ~ 0.5 gr. increments according to the Hornady charge data. I'll probably have to check after each shot to ensure that I don't leave a bullet lodged in the barrel.
Do any of the wise amongst us have suggestions?
As an aside, I noticed that Linebaugh's 310 data are not self-consistent. His web page gives the following numbers in different tables:
A load in his 7" test barrel:
310 GR LEAD SWC H-l10 23 1330 FPS 30,000 CUP
His suggested data (and he claims these charge weights are good for the 300 XTP at lower velocity):
Starting load: 310 cast H-110 21.5 1109 24,400 CUP
Maximum load: 3190 cast H-110 23.5 1316 32,000 CUP
Personal load that he suggests for big game/ dangerous game:
H-110 24 310/320 cast 1250 fps
His preferred load is over his max, and at lower velocity. I suspect 24 gr. is way too much.
Hornady gives a starting load of 17.9 gr., max 21.7 gr. H-110. I note that Hodgdon says not to download H-110 by more than 3%, yet the Hornady starting load is 18% below their max. Hornady also uses Winchester cases and WLP primers. I can't get WLPs, but I can get CCI 350s. (Also, if anyone has a recent Hornady manual, can you check the OAL for me? I'm not sure which cannelure to use.)
I also note that the Hornady load data differs significantly from both the Hodgdon online data (which uses a different jacketed bullet of the same weight) and Linebaugh's data (which I do not take to be authoritative).
Right now, my plan is to work up several loadings at ~ 0.5 gr. increments according to the Hornady charge data. I'll probably have to check after each shot to ensure that I don't leave a bullet lodged in the barrel.
Do any of the wise amongst us have suggestions?
As an aside, I noticed that Linebaugh's 310 data are not self-consistent. His web page gives the following numbers in different tables:
A load in his 7" test barrel:
310 GR LEAD SWC H-l10 23 1330 FPS 30,000 CUP
His suggested data (and he claims these charge weights are good for the 300 XTP at lower velocity):
Starting load: 310 cast H-110 21.5 1109 24,400 CUP
Maximum load: 3190 cast H-110 23.5 1316 32,000 CUP
Personal load that he suggests for big game/ dangerous game:
H-110 24 310/320 cast 1250 fps
His preferred load is over his max, and at lower velocity. I suspect 24 gr. is way too much.