The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Rifles Big Bores 458 Lott - QuickLoad helpGo | New | Find | Notify | Tools | Reply | |
| One of Us |
Need a favour from someone with quickload please. The following is the load data and i am interested in the pressure difference and predicted difference in velocity Load 1 Calibre: 458 Lott Powder: S355 (Somchem) Weight: 77 grains Bullet: 500 grain Hornady DGS Primer: CCI 250 Case:Hornady Load 2 Calibre: 458 Lott Powder: S335 (Somchem) Weight: 80 grains Bullet: 500 grain Hornady DGS Primer: CCI 250 Case: Hornady Thanks | ||
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| one of us |
What kind of powder is the [somchem] I know it got to be a slow burning powder but I never heard of it. I use IMR4320 for my 458 Lott and I use IMR4350 with my 375 H&H, My 416 Rem Mag I use RL15. | |||
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| one of us |
77-80,500gr bullet- must be identical to H4895 | |||
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One of Us |
As requested…please be aware that QL doesn’t seem quite as accurate with straight case cartridges as it is with bottleneck cartridges. Jim  "Life's hard; it's harder if you're stupid" John Wayne | |||
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| new member |
Yes, QL seems to have a lot of problems with the 458 Lott. In my gun, I have to increase the case volume by 15-20% before QL's mv and the chrono match up. Another example. I took the max load from a Norwegian reloading manual and tried it in QL. The software predicted pressures of 84-85k psi! But the manual got those loads from Harald Wolf who had them tested by a proof house in Liege (IIRC). So the proofhouse says its okay, ie below max pressure of 60-63k And Ql said 85.... I tend to trust the proof house more. | |||
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| One of Us |
Thanks for the feedback | |||
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one of us |
http://gsgroup.co.za/burnrates.html | |||
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| one of us |
Have you ever heard of Steves loads. That man has pretty near covered every caliber there is. He has a web sight and its free to use. I wouldn't start with top load tho. | |||
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One of Us |
What is the OAL of your cartridge mate? It could have a big effect on pressure. | |||
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| One of Us |
Quickload suggests 79.6 grains of Somchem S341 for 2150 fps at 55Kpsi as the best load with SA powders. I foundthis, maybe it's of some use to you. | |||
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The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Rifles Big Bores 458 Lott - QuickLoad help
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