Home Forums Hunting & Shooting Express Rifles and Big Bores Only Powders/loads for 458wm and Lott?

Did a little reading, and looks like IMR3031, Reloder 7, H322 are good general usage powders for these two cartridges. However, I haven't quite found specific load data for the velocity range I'm interested in. Hoping y'all can point me in the right direction. Rifle is a Ruger #1 with a 24 inch barrel.

Barnes 300gr TSX @ 2600fps
Barnes 350gr TTSX @ 2400fps
Hornady 350gr @ 2400fps
Speer 400gr @ 2200fps

I've got some Reloder 15 to drive the 500gr bullets @ 2200fps.

Thanks!

TXpitdog - you're a lucky man...check out the latest "Rifle" magazine. Great stuff on loading the .458 Winchester magnum. 300gr Barnes, 350gr Kodiak and a cast 405gr w/gas check. regards, Homesteader.

I've used IMR 30-31 for years and have seen no compelling reason to change. I guess there may be better powders out now, however.

RL 7 looks to be awfully good.

I use H335 w/350 TSX bullets.....H322 was not as good overall. Yep, I too want to try the Kodiak bullets in this, heard from a asst. guide up here that he highly favors them.

This is what I ended up loading. Any thoughts?

458 win mag, fed. 215 primer, 300gr Barnes tipped TSX, 48gr IMR4227

458 win mag, fed 215 primer, 68gr Reloader 7, Speer 400gr JSP seated in the rear cannelure

458 Lott, fed 215 primer, 78gr Reloader 15, Hornady 500gr JSP

The Speer 400 grainer is a .45/70 bullet with a paper thin jacket. I would urge caution on where you use it with that load. The Remington 405 gn version is more appropriate with the .458 case.

John

H4895 is your huckleberry!

H-322 will get you there with alot less powder compression than the RL-15 w/ the 500 grainer's,
My old tang safety Ruger in 458 WM does 2200 easy, But I keep it around 2150 or so for excellent accuracy w/ the Hornady DGS/DGX bullets.

Gunner

Thanks all, it's interesting that even with a huge case, powder compression is a factor.

I have also had excellent results with 4895 in the 458 win

I use H4895 with Hornady 500g RN Interlocks and get just over 2000fps with a slightly compressed load.

I use Rel 7 with my 405 Lead bullets for my plinking load.

Since I'm not hunting any dangerous game with it, I haven't looked for the max velocity load, but the two mentioned powders are working great for me. Of course both loads us mag primers.