rolling block vs. trapdoor

[shannonavah]

So this might be a stupid question but which can use more grains I know trapdoors have to use lighter loads. But what about a "Remington style specificly" can those use a stronger load, longer cartridge. so I am thinking of buying one, and would like to know which would bo better for these performance's???

[mcwoodduck]

A falling block like the sharps is going to be stronger.  I am guessing you are talking about a reproduction rather than an original.
With an 1871 Buffalo Classic being stronger.
The Trap door is really fragile.  a hinge pin is what holds the action together.  While the modern versions are better they can not hold much more then the hot trap door loads (the 300gr JHP factory load)
the Modern Rolling Block has a stronger action but only as strong as the block and hammer.  when the hammer falls it rolls under the block and prevents the block from opening.  Making the metal the hammer adn block are made out of along with the hinge pins the hammer ad block swivel on being the weak point.
also the rolling block has a bit of an angle to it and  longer strait wall rounds may not fit. Thinking of 45-110 or 45-120.
If you are looking to go bigger or more powerful than 45-70 then I would look at one of the falling blocks like the Sharps or the Winchester High wall or one of the hinged guns like the H&R buffalo Classic.

[longcaribiner]

There are falling blocks, rolling blocks, hinged blocks swinging blocks and swinging barrels, trapdoors, pivoting blocks, dropping blocks, break opens.  Some are definitely stronger than others, some are not even suitable for centerfire cartridges.  Some seem like they could withstand the atom bomb.  To make matters even more confusing, some actions are weaker because of design and some of the same type are designed better and are stronger.  An early Whitney roller is probably weaker than a trapdoor.   

If you are considering buying a gun, the type of action is just one of many considerations.  What type of rifling, what range will you be shooting, reloading or factory ammo.  Some guns are great with factory ammo, but lousy with lead cast bullet reloads.    Some have twists for shorter bullets.    There are as many different types of rifling as there are actions.   

[StrawHat]

So this might be a stupid question but which can use more grains I know trapdoors have to use lighter loads. But what about a "Remington style specificly" can those use a stronger load, longer cartridge. so I am thinking of buying one, and would like to know which would bo better for these performance's???

Give us a bit more info.  Original or replica.  What cartridge are you talking about?  Both were cut for the 45-70 and 50-70.  Both have been reworked for a variety of other cartridges, some not so smart.  Are you going to use it for hunting, silhouettes, long range shooting?  

The trapdoor will hold loads that will cause the rolling block to blow apart.  Don't believe it?  See the 1996 Guns Illustrated article by C. Rodney James.  Interesting article, I'd post it but I am unsure how to do it and comply with copywrite rules.