Guido4198
03-19-2006, 07:24 PM
I've been looking for a low & slow "Big soft bullet load" for my .458 WinMag.
Here's what I came up with today at therange. There's a coupla things here that kinda suprised me. Tell me what you think..OK??
These were all fired from my Dangerous Game Rifle. With full house 500 gn. solids it's done well on Elephant and Buff. A Remington .458 Win mag built on what was originally a LH 7mm Mag. 21" Douglas bbl. The slug is an NEI "Badger-Browning", plain base design, cast in 30:1 alloy that scales out 492gn. Sized .459, NRA-Alox lube.
There were all loaded with Win. LR mag. primers. Shot from a rest @ 50 yds.
No "leading issues" observed with any of these loads.
Load 1: 40 gn. IMR 4198- ave. M.V.: 1505 fps. Es:71
Didn't group very well, couple of inches. Otherwise no problems.
Load 2: 45gn. IMR 4198- ave. M.V.: 1666 fps. Es: 5
As above, no problems, but no improvement in group size.
Load 3: 50 gn. IMR 4895, M.V. ave: 1377 fps. Es: 16
This gave by far the best group, 5 rds. with all holes touching.
Sort of the classic,"one big ragged hole"
Load 4: 50 gn. IMR 4895 w/ approx. 2gn. poly-fil. M.V. ave : 1596 fps. Es: 30
Groups opened up a bit from the load without polyfil. I was particularly suprised that the Es increased, and also suprised by the dramatic increase in M.V.
Comments welcome...........
Cheers,
Don
Here's what I came up with today at therange. There's a coupla things here that kinda suprised me. Tell me what you think..OK??
These were all fired from my Dangerous Game Rifle. With full house 500 gn. solids it's done well on Elephant and Buff. A Remington .458 Win mag built on what was originally a LH 7mm Mag. 21" Douglas bbl. The slug is an NEI "Badger-Browning", plain base design, cast in 30:1 alloy that scales out 492gn. Sized .459, NRA-Alox lube.
There were all loaded with Win. LR mag. primers. Shot from a rest @ 50 yds.
No "leading issues" observed with any of these loads.
Load 1: 40 gn. IMR 4198- ave. M.V.: 1505 fps. Es:71
Didn't group very well, couple of inches. Otherwise no problems.
Load 2: 45gn. IMR 4198- ave. M.V.: 1666 fps. Es: 5
As above, no problems, but no improvement in group size.
Load 3: 50 gn. IMR 4895, M.V. ave: 1377 fps. Es: 16
This gave by far the best group, 5 rds. with all holes touching.
Sort of the classic,"one big ragged hole"
Load 4: 50 gn. IMR 4895 w/ approx. 2gn. poly-fil. M.V. ave : 1596 fps. Es: 30
Groups opened up a bit from the load without polyfil. I was particularly suprised that the Es increased, and also suprised by the dramatic increase in M.V.
Comments welcome...........
Cheers,
Don