Where Are The 475 Maximums?

[AxeHandle]

Why don't we see 475Max customs on a regular basis? No brass no guns no nothing. The banter that went with the recent 475 maximum that quickly sold on Reeder's forum provided me the enlightenment that the 475 Maximum is simply a shortened 45-70 case. That answered the brass question.. Now we routinely see the 357SM, 375SM 414SM, 445SM and even the 500Max. What has become of the 475Max custom revolver?

[kings6]

They are probably all still embedded in the last casual shooters foreheads! I can see the shooters ball caps now. They have this strange looking "hump" just above the bill. ;D

[Lee Martin]

We routinely see 414 SuperMags?

A lot of the published 475 Maximum data doesn't show appreciable gains over the Linebaugh. Not sure it this holds in real life, but Ross Seyfried came to the same conclusion in his 1991 article. Now the 500 Maximum consistently adds 250 fps over the 1.40" (across nearly all weights). That was enough cause for me to build mine.

-Lee
www.singleactions.com
"Building carpal tunnel one round at a time"

[kings6]

Axe is right- Lee you have a 414, MajorKap just snagged one and I have a couple hidden away. At least three of us routinely see 414s. I guess Axe must have a set of 414s just like his other sets Lee ;D

As for me, I am trying to NOT develop carpal tunnel syndrome so the 475 Linebaugh and 500 Linebaugh will be enough for this old guy.

Just teasing you Stan, you are right there is not much in the way of postings for the 475 Long.

[Lee Martin]

Good point Robb. And ya, while the 414 is a rare bird you rattled off 5 or 6 on this forum alone. Plus I personally don't know anyone that's even shot a 475 Max

-Lee
www.singleactions.com
"Building carpal tunnel one round at a time"

[rigby]

That first 475 max that Ross wrote about didnt work well for him and he couldnt get much out of it. I had talked to John Linebaugh right after the article came out and he said that it had a bad barrel that was bored wrong. John had done the 475 max while Bowen did the 500 max. Dont know if that put a cloud over the 475 or its just a matter of what the hell if I am going this far might as well get the biggest.

[Lee Martin]

You're right, the original Seyfried 475 Max had issues. That said, subsequent 475 Long data showed a small increase over the Linebaugh. Heck, most 475 Linbaughs will push 420's close to 1,400 fps. The 475 Max took that bullet to 1,500 fps. In other words, only a 100 fps more.

Now consider the 500 Max. The Linebaugh kicks 440's to 1,200 fps. The Max can hit 1,550 fps. An added 250 fps with a half-inch slug is nothing to sneeze at.

But again, I'm only going on 475 data published on the internet. It may do more with the right load and the right gun.

-Lee
www.singleactions.com
"Building carpal tunnel one round at a time"

[whitworth]

Apr 11, 2012 10:25:46 GMT -5 Lee Martin said:

We routinely see 414 SuperMags?

A lot of the published 475 Maximum data doesn't show appreciable gains over the Linebaugh. Not sure it this holds in real life, but Ross Seyfried came to the same conclusion in his 1991 article. Now the 500 Maximum consistently adds 250 fps over the 1.40" (across nearly all weights). That was enough cause for me to build mine.

-Lee
www.singleactions.com
"Building carpal tunnel one round at a time"

Ya, what he said!

[AxeHandle]

Carpal tunnel syndrome? If you batter your wrist bones to a pulp there can be no carpal tunnel syndrome. You guys are going to die to young to worry with it anyway. Maybe I'll take up writing when you are gone and tell the rest of the world about the crazy stuff you did...

I've got the Harton tuned 375Max, a Gallagher 445SM, and the Huntington 500Max. Got at least one "extra" box stock 357 max in the safe.. I sure do like the looks of this hard chrome 500 MAX that Jack built.. Think he might do a matching 475Max?

[Lee Martin]

Sure, Jack would build you one hell of a 475 Max. It would make a nice book-end to your Hunington 500.

I've toyed with the idea of building a 475 Long but just can't get motivated. Maybe that'll change, but right now I can think of many other projects I'd rather do

-Lee
www.singleactions.com
"Building carpal tunnel one round at a time"

[boxhead]

Lee,

I see, but have not loaded to confirm, that Hodgdon's site shows 500 L loads running 425's at 1400+ and 468's at 1350. Are they optimistic? Have you run their loads to confirm either way? Curious.

[Lee Martin]

That seems high. My 5.5" Bisley 500 will do a tad over 1,200 with a 435 WFN (full case of H110, <0.002" gap, and very tight chambers). I try to hold mine to 35,000 PSI published data though. Maybe they're going higher.

-Lee
www.singleactions.com
"Building carpal tunnel one round at a time"

[whitworth]

Lee, recall that those 500 grain Grizzly loads were doing 1,200 out of your .500 Linebaugh. He doesn't load them to high pressures (I don't recall what they are loaded to).

[Lee Martin]

Good point Whit....and those were 500 grain slugs. It's been years since I chrono'd my first 500 Linebaugh but I remember something like 1,225 with that 435 (my standard 29.5 grains of H110).

-Lee
www.singleactions.com
"Building carpal tunnel one round at a time"

[boxhead]

Just took a closer peak at Hodgdon's site. They show maximums of 31.5 grs of H110 with the 468 gr and 33 grs with the 425 (GC) gr, both at or under 35 kpsi. Pretty darn healthy doses. Could be bullet style (a WFN?) that allows a bit more room in the boiler as they are vague on the bullet descriptions? For the 475 L they show 1400 fps with a 405 over 26.5 grs at 48.5 kpsi. Interesting what what .037" in diameter allows, not unlike the 45 Colt vs. 44 (I mean .429 ;D ) Mag. Bottom line is they are all thumpers especially recalling the first time I shot a 44 Mag many, many years ago. WOW after that first shot.