Anybody know anything about it?

If you mean their .457 , I looked at it years ago and it seemed to be a way to get a little more power (case 1/10 inch longer ) from a Marlin .45-70.
I went on and bought a 1886 .45-90 (case 3/10 longer) and never looked back.

Terry, back when factory ammunition for the 45-70 was loaded to Trap Door Springfield specs, the 457 WWG made sense. The 450 Marlin also emerged as a way to up the power of 45-70 rifles in modern firearms. But now that Buffalo Bore, Grizzly, Double Tap and others load 45-70 ammo to near 458 Win Mag specs, there's really no need for either of them.

I also was never impressed with the 45-70 and felt some of the companies pushed the string trying to make it something it wasn't!

I shot and hunted with a Win. 45-90 with a 26 inch barrel and another early on with a special order 28 inch barrel..both worked well and I was impressed with the 350 gr. Hornady or Speer, not sure which, its been a long long time ago...Being ranch raised, if it didn't have a lever and buckhorn sights it wasn't fit to hunt with!!

Ray,
+1 for the .45-90 with 26 inch barrel.
However, not the buckhorn sight.
I prefer the Marbles folding barrel sight and the Marbles tang peep sight.
The barrel sight for up close and personal and the tang sight for further out.

When loaded to the same pressure levels, there is very little difference (something like three grains capacity) between 45-90 and 450 Alaskan. However, the +P 45-70 is plenty stout for anything outside of Africa, and most things in Africa.

Bullet selection is important in the large 45 cal lever guns, but that applies across the board, regardless of the case size used.

If pushed beyond their velocity envelope or used on tougher game than they were designed for, you can expect bullet performance problems. There is a huge difference in the construction of bullets that are available in this caliber. Some bullets were designed for lighter game at Trapdoor pressure levels, while others were designed to withstand 458WM velocities and tougher game. The problems people see are invariably down to using the wrong bullet for the job.

JFE is right on target.
Which is why we were so successful on African DG with NF, Punch, Kodiak for buff and ele and Nosler for leopard.

http://www.ammo-one.com/457WWGmagnum.html

According to the above, WWG is releasing a proprietary cart in 30 and 35 so a 475 would not be so out of the box.

Has anyone used the Underwood .45/70 ammo in the copper 225 or 325 grain. Are pressures too high for my WWG Co-Pilot?

What I need to know is if anyone has used Underwood ammo in .45/70 in either the 225 or 325 grain all copper bullet and if the ammo is safe to use in WWG Co-Pilot based on a Marlin 1895.

If I was looking at a .475 lever gun. I would look close at the .470 and .475 Turnbull.

I’m sure there is a disclaimer. I use other plus p 45-70 and they lay it out exactly what actions are safe. The 1895 fairly strong

quote:

Originally posted by Lefty9900:
What I need to know is if anyone has used Underwood ammo in .45/70 in either the 225 or 325 grain all copper bullet and if the ammo is safe to use in WWG Co-Pilot based on a Marlin 1895.

The 45-70 and 90 cases are quite 'light', thin, not a heavy case. That always bothered me when using heavy loads. Thin necks, and I like neck tension.

MoreBS,
Some of my levergun friends and I have been loading and shooting heavy 45-70 and 45-90 ammo for years in our 1886 rifles and had no problems with the brass cases.
Naturally, the 1886 rifles seem capable of handling any that the shooter can handle.

quote:

Originally posted by crshelton:
MoreBS,
Some of my levergun friends and I have been loading and shooting heavy 45-70 and 45-90 ammo for years in our 1886 rifles and had no problems with the brass cases.
Naturally, the 1886 rifles seem capable of handling any that the shooter can handle.

I have been loading 45-90 etc for a long time as well,from stretched cases from Buffalo arms to new Starline cases,I once tried magnum primers in my max loads,I got quite a bit of case expansion near the head of the cases,I resized the fired cases,went back to Large rifle primers & carried on,no problems at all.

I use Norma brass for my 45/120 nitro loadings -- winshester, usually, for 45/70

When beginning to load 45-70 and 45-90, I bought Starline brass and am pleased with them.
Some of my spent 45-70 cases are the shorter ones used by Hornady for their pointed 325 grain loads, I toss all those empties into the garbage as I go along. Even then, I have hundreds of loadable .45-70 and hundreds of 45-90 brass. Reckon that is because I do not 'play" with these rifles and when hunting, one shot usually equals one kill (except when it equals two kills).