Would you notice a difference with a .458 Lott (450 Dakota)to the .510 caliber rifles with this bullet/vel combination?

Thanks for the help.

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Ray Atkinson

ray@atkinsonhunting.com
atkinsonhunting.com

Actually, sometimes I thought that the case loaded with less but faster burning powders actually kicked harder. This seemed to be the case when I was loading my 416 Rigby with IMR 4064 instead of the usual IMR 4831. I DO NOT RECOMMEND LOADING THE RIGBY WITH IMR 4064 AND STRONLY DISCOURAGE IT! In this stupid experiment my powder charge was significantly reduced opposed to the IMR4831 charge and to me the felt recoil seemed to be slightly sharper.

Todd E

Thanks for the help guys.

Shawn

470 Mbogo

How much penetration do I need? Does the larger dia of a .510 traveling only three feet into a buffalo make it a bad choice when compaired to a 500 grain bullet from a lott penetrating four feet of buffalo?

I had hoped that going to a larger caliber and keeping the same bullet weight I could see lower pressures and lower recoil (faster recovery?).

What about necking up your case to .488? That may be the largest dia. that the Dakota case could use and still maintain a good shoulder. I know there aren't many bullet choices in .488 (Hawk, Barns Woodleigh, softpoints and solids), but then how many do I need. Just trying to do something different.

Thanks for the help.

My 500 AHR has a 26 inch barrel utilizing a 1:12 twist. The muzzle diameter is .79". The rifle weighs in at 10 pounds 4 oz. without the scope. There is about 10 oz. of lead in the butt to provide my preferred balance (slightly butt heavy). My rifle also has a removeable muzzle brake which brings the total barrel length to 27.5".

I shoot 570 grain Woodleighs exclusively in my rifle loaded to 2450 fps. To date the performance has been stellar. The recoil is not bad, but I am used to shooting these heavy rifles. To put it in some perspective I have a 7.5 pound 300 Win Mag which I do not consider to kick at all. I mean I do not notice the 300's recoil in the slightest.
The effect on game is quite awesome with the soft points. Wound channels are large and deep. On American Bison I can get complete fore to aft penetration with this load and a wound channel that both of your fists will fit into. I used a similar load with my 505 Gibbs and this rifles performance was very similr on Cape Buffalo.

With the above load my rifle will shoot 1 inch groups at 100 yards in a three shot string.

Todd E

quote:

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Originally posted by Snapper:
(sic)

I had hoped that going to a larger caliber and keeping the same bullet weight I could see lower pressures and lower recoil (faster recovery?).

(sic)

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You will feel signifigant levels of recoil from any rifle firing a 500 gr bullet @ 2300 fps, period! If you want less recoil, then go with a 40 cal pushing 400's. If you want 500 gr bullets, use a 45 or 475, and if you want a 50, then use 530's, 570's or 600's.

Seriously, if you find the 500 gr 45 loads have too much recoil for you, as most folks find, then the answer is a 40 cal 400 gr load. Those of us shooting the 45's and 50's do it out of a perverse love for these brutes, but will honestly admit that the recoil is at and many times over our threshold.

If I shorten the 505 Gibbs case to .290 and expand the neck to .510, would the neck (.400) be long enough to hold the bullet properly? The 500 Jeffery had a shorter neck and was well liked.

You guys are a big help. Thanks!

For fun, I fireformed some 270 brass in my 358 Hawk and made a dummy round to carry around to see if anyone could tell me what it was. Everyone looks at the headstamp and then is stumped. They just can't get past the 270 stamp, but admit it is one great looking cartridge. Most can't believe it is a 225 grain, 35 caliber bullet.

Build it and they will come.