Well the Roth IRA money unlocks this year, so I get to go back to Africa, probably in 2018.

I have killed an elephant with a 375, but it was a little light and I have decided to stay bolt trash. A new Montana in SS and plastic is on its way, chambered in 458 lott.

So how to feed it? I like Michael's work with the CEB 450 solids, so that is the first choice of bullet. From the data n530 looks very good, but the 4895s are not bad, and AA2520 is right there. Any good reasons to pick one over the other? I have both 4895's and the n530 is a little expensive, is it worth it?

Arniet,

Call the folks at CEB, tell them what you have in mind. They will run you out reloading data for several powders. I have called them a few times, they are very helpful.

H4895 and Accurate 2230 are great powders with the 450 gr class of bullets. I dont have any experience with the N powders so I cant say one way or not. Plus, I never developed loads for a hot climate.

We have had very good accuracy using IMR4320. I still like one of the Hogdon Extreme powders though. Like the others say, I would try H4895 or Varget. That way, you do not run into overpressure in the "hot and sweaty" hunts.

I use H4895 with excellent results.

quote:

Originally posted by clayman216:
I use H4895 with excellent results.

Yes, H4895 should work very well.
I would imagine that even faster powders than H4895 could also produce enhanced velocities.

Try H322 for another recommendation in the "Extreme" heat-stable powders. It works very well in the 500AccRel with 450 grains.

Here is some data from Michael McCourry on several powders for the 458 Lott with 450 grain CEB.

The data was in a table that I am pasting here. Basically each load includes charge/powder, primer, two velocities and pressure. With a little thought you can figure out the unlabelled numbers. The table format did not transfer in the paste below. Two velocities appear to be two test shots with the difference and average spelled out and in most cases a pressure reading.


450 BBW#13 Solid

11/13/13
450 #13 Solid
80/TAC
Fed 215
2387
2385
2
2386
60323 PSI


12/15/11
450 #13 Solid
80/IMR 8208
Fed 215
2366
2364
2
2365


11/9/13
450 #13 Solid
80/IMR 8208
Fed 215
2386
2374
12
2380
58417 PSI--Excellent Load


12/15/11
450 #13 Solid
84/RL 15
Fed 215
2384
2375
9
2380


11/9/13
450 #13 Solid
84/RL 15
Fed 215
2299
2271
28
2285
44727 PSI


The RL 15 from 2011 is vastly different from 2013 RL 15--Make Note of This!!!!!!!!!!!!!!!!!!



11/11/13
450 #13 Solid
80/IMR 4320
Fed 215
2296
2277
19
2286
51611 PSI


11/11/13
450 #13 Solid
83/IMR 4320
Fed 215
2383
2377
6
2380
58364 PSI



11/15/13
450 #13 Solid
86/AA 2520
Fed 215
2465
2464
1
2465
63807 PSI



11/15/13
450 #13 Solid
84/AA 2520
Fed 215
2410
2400
10
2405
58253 PSI



11/15/13
450 #13 Solid
80/IMR 4064
Fed 215
2307.8
2307.2
0.6
2307.5
50474 PSI



11/15/13
450 #13 Solid
83/IMR 4064
Fed 215
2398
2385
13
2391
60083 PSI



11/15/13
450 #13 Solid
80/IMR 4895
Fed 215
2301
2267
34
2284
50092 PSI



11/15/13
450 #13 Solid
83/IMR 4895
Fed 215
2361
2342
19
2352
53313 PSI -Excellent PT



11/15/13
450 #13 Solid
85/IMR 4895
Fed 215
2422
2412
9
2417
59338 PSI



11/21/13
450 #13 Solid
79/H-4895
Fed 215
2381
2373
8
2377
56856 PSI



12/12/13
450 #13 Solid
79/V-N530
Fed 215
2397
2392
5
2395
55990 PSI



12/12/13
450 #13 Solid
81/V-N530
Fed 215
2469
2430
39
2450
59675 PSI>>>RETEST
62169
57182
- 4987
59675



12/23/13
450 #13 Solid
81/V-N530
Fed 215
2434
2430
4
2432
58111 PSI


2511
2492
19
2501
MagSpeed Muzzle Velocity

I thank Michael for forwarding this.