458 Winchester Reduced Load Info

[GoexFFG]

I just purchased a Whitworth 458 Winchester off Gunbroker. I’m interested if anyone has any recipes and or powders that won’t need filler. Thanks for the info. I plan on using it on hogs until I can afford a buffalo hunt. I shoot at night with an AGM thermal was hoping to try it on the Whitworth. It will be impossible with full house loads. If the recoil is stiffer than 308 in an AR10 it won’t be feasible. Thanks for the help.

 

[Mountaineer]

I tried some reduced loads that would allow my daughter to shoot mine. She shoots a 338 federal with 180 grain bullets loaded max and a 7mm Remington mag with 140 grain bullets. I never found any load that she could have shot. Sorry for the bad news.

 

[1r4rc]

A couple very mild, accurate loads you might try if you happen to have either of the powders (scarce now). One is Trail Boss w 400 or 405 gr jacketed flat nose bullets. Hodgdon had the instructions online (basically fill to bottom of bullet, cut back to 70% (not cut 70%) and work up from there). The other that has been very mild and very accurate for me w the same bullets is around 28 gr of IMR SR 4759. I used mag primers w both. I happened to have enough of both powders to still be going strong, but realize they are scarce to nonexistent now. Check Hodgdon and others for reduced and subsonic loads.

Final sugggestion would be something like that w lead bullets but I use the above (a lot) and defer to someone else on that.

 

[1r4rc]

The load w 4759 was out of the Speer manual #13

 

[Ridge Runner]

I am currently working on light 458WM loads.
PM sent.

 

[Randy Bo]

You may find this helpful:

Thread 'Reduced/Practice Loads for DGRs'

Oct 19, 2020

I recently acquired 50 rounds of 470 NE by Nyati, Inc. They are listed at 1150 fps with a 500r round nose jacketed bullet - powder and charge not indicated. I have not tried them yet, but the idea certainly interests me for other reduced loads for my 450/400, 450 NE and 458 Lott. Apparently, the standard powder for such reduced loads is Accurate 5744. According to Terry Wieland in his Dangerous-Game Rifles tome, one should load a given case to the base of the bullet (i.e., determine full-case capacity) with said powder and then use 40-50% of the measured load for lead bullets and 60-65%...

• JPmbogo
• Replies: 23
• Forum: Reloading

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