BP question..........

[NobleSniper]

Ok, lets say you have a 45 caliber BP revolver load using a 457 ball backed with 55-60 grains of powder. Now, lets say you fill a shortened 45-70 style case with 55 grains of BP behind a 255 grain slug. Would the 255 grain shortened 45-70 case be any more volatile than the 55 grains in the BP revolver? Thanks

 

[robhof]

A 457 ball is only about 150 gr. so yes a 255 gr slug would have more punch than the ball and are they being shot in same length barrel, if not a longer barrel would give more powder burn time.

 

[madcratebuilder]

The lighter .457rb well have a higher velocity than the heavier slug. How that translates to delivered energy you well need to find a on-line bullet energy calculator.

 

[NobleSniper]

Hello Rob, see your from Bowling Green......my family hails form Boiling Springs. Been there for over 200 years now I guess what I am wanitng to ask if a firearm could fire the 55-60 grain ball laod could it handle a cased load of say 55-60 grains with a 255gr slug? AM thinking a really odd cartrige conversion

 

[mykeal]

Would the 255 grain shortened 45-70 case be any more volatile than the 55 grains in the BP revolver?

In general, yes, for two reasons: 1) the cartridge case is a slightly smaller volume and 2) the 'slug' is held stationary in the cartridge for a slightly longer time than the round ball in the chamber. Both together will result in higher internal pressures. That is added to the higher mass of the 'slug' which needs more force (and thus higher pressure) to move, as robhof suggests.

 

[hildo]

I have shot a roundball with 55 grains powder from a Walker.
Also fired a 200 grain conical from that Walker, with 45 grains powder.
I found that with the conical / 45 grains the recoil was a little more than with the roundball / 55 grains

Hildo

 

[NobleSniper]

Well, I am still in the what if phase of things but am seriously trying to get an idea of who will do what and what will I need to build a Walker carbine..... the Walker Sam Colt never built. I know Howell does a one piece cylinder conversion for the Walker but personally consider the 45LC a bit underpowered in the Walker. "IF" I am correct a 457 ball with say 55 grains behind it in the persussion cylinder is way more potent than a typical BP 45LC load. SO why could you not use a longer case say enough to hold 55-60 grains of BP and say load it with 255 grain slugs. I have already figured out what I need to do to custom buttstock/grip (non-detacheable) and am pretty sure I have someone available who will do the woodworking. Still out as far as who to do the barrel but understand what has to be don be done and how to do it.Will need to spend some time studying what kind of twist rate would be best to use etc etc........ Know what I want to do and would like to se if its feasible and once I get back to work next spring start working on getting it done. Jsut want something totally different and "ONE OFF" Any suggestions would be greatly appreciated and if this is just good for a laugh your welcome

 

[sundance44s]

Colt did invent a revolveing rifle/carbine in 1855 ..it wasn`t built on his pistol frame , his revolving rifle/carbine ...was large caliber and the weapon had a top strap over the cylinder it shot lead round balls .
Do you really want to build a carbine on the Walker frame with a wedge holding the barrel in place and shoot heavy bullets .
Colts open top design works pretty well for loose powder and round balls , but even with the use of a 45 Lc conversion cylinder you are takeing a chance on shooting the barrel loose shooting heavy bullets .
Then there is always the where the heck do you put your off hand .......its only natural to go for the forearm hold .......and that can be a very bad place with such a weapon ..

 

[higene]

ROA Carbine

No ROA/Walker competition intended, but

I converted my ROA to a carbine by pulling the stock off of my Crossman American Classic 1377 (available on the web for about $25) and affixing it with a stainless steel bolt after removing the pistol grips (No it will not fit my Walker - I tried).

My inner child is wounded at the temporary incapacitation of my pellet pistol/Carbine, but, I am proud of the Yankee ingenuity demonstrated in developing an inexpensive and effective revolver carbine from All American parts!

http://www.thehighroad.org/attachment.php?attachmentid=106688&d=1254850136



Higene

 

[NobleSniper]

Nice

 

[madcratebuilder]

higene
That's thinking with your dipstick Jimmie! pretty damn cool if you ask me. What is the material that Crossman stock made of? A little devcon and you could maybe mold that to fit anything.

NS, how heavy of bullet can a cartridge conversion Walker handle? Shoulder stocks and barrel length laws do not apply to c&b revolvers but when you covert to cartridge that may change. I think if you make your conversion cylinder permanent it becomes a NFA fire arm, but I'm not sure.

 

[NobleSniper]

minimum 16 1/4" to 18" barrel is what I was finguring on Have dealt with barrel length laws with Kalashnikovs and such

 

[higene]

Crossman 1399 Custom Stock

The stock is plastic. It looks like it's injection molded. It could use a couple of spacers at the top if one wanted to compulse on it. If one wanted to work on another platform (i.e. Walker repros), one could work with heat and files and probably come up with something.

$25 bucks ain't much to cough up if one were inclined to go that way. Right now for me it was kind of a bright idea that worked better than I thought it would. It is nice to know that I have that option but I am reluctant to beep up the stock for my Crossman as I shoot it a lot.

But, it is a nifty combination and it may grow on me.



Higene

PS Thinking with my dipstick is why I need all these guns - The paranoia of an unrepentant sinner!

 

[madcratebuilder]

The stock is plastic. It looks like it's injection molded. It could use a couple of spacers at the top if one wanted to compulse on it. If one wanted to work on another platform (i.e. Walker repros), one could work with heat and files and probably come up with something.

Thanks higene, I have a plastic welder so if I can determine to correct type of plastic I can change things around a bit.