| Rule303 |
| (.450 member) |
| 22/04/19 06:33 PM |
Re: can the .350 Rigby be loaded for the 310grn 400/350rnd?
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Quote:
I am taking mine to SA next month and have been working up some loads. I've loaded the 250gr. Speer into homemade cases from .375 H&H in front of 74 grains of H-4831 for 2550 fps and am getting 1 in. groups at 100 yds. I am going to stick with this for my load right now as it is giving me what I need. Also loaded 73 grains of IMR-7828 that gave me 2470 fps and good accuracy. BTW, I loaded the H-4831 load into 40 Stewart cases for the hunt. Both of these loads are a little hotter than the Woodleigh data but everything looks ok. I have a copy of the Woodleigh data page but it is hard to read and would not upload well. When I have more time I might work up something with the 250gr. Nosler....maybe the 225 load would be worth playing with as well. I would be really interested in some loads that approach the 358 Norma but would like to hear from someone who has done it.
Woodleigh manual points out that the 350Rigby holds 2 grains more water than the 358Norma and advise that the starting loads for a 358 Norma should be good as starting points for the 350 Rigby. I was looking at making a 350 Rigby until I decided to go with the 338/358RUM and worked out some loads to start with.
My method of coming up with a starting load is to find similar cartridges and then make allowances for the difference in case capacity and shape. Bit of guestimation involved but the 350 Rigby is fairly straight forward -unlike the 338/358RUM. If you know somebody with Quickload have them work out some suggested starting loads.