5744 per se has not been banned at the Quigley.  The use of wads with 5744 has been banned.

All kinds of powder that "can" be used.  4227 is well proven and no history of blow up's, unless double charged.  Double of 4227 will fit in most SS cases but is very obvious, you would have to be careless to shoot a double charged load. 

I have moved all my 4759 loads over to 4227 with no problems and the advantage of being better through a measure. I never use a wad of any kind

If what we hear is true, why fool with surplus powder ? leave  5744 for other guys to experiment with.   

Boats

I have always loved my 4227 powder. Found 4759 was good too. But I like to fiddle from time to time and have tried, in the .32-40, both 4198 and RL7 a few times. Both worked pretty good with gascheck slugs at somewhat elevated velocities. Inconsistent down low, though, and didn't work worth a tinker's damn with plain base bullets. 
I didn't work with either very long, so maybe there could be some possibilities, but I'm not gonna give up my 4227 and remaining 4759.

Here's a simple wad seater I made that works well.  It's nothing more than a block of wood with a hole in it, a dowel, and a set screw.  The dowel floats in the hole so when a powder charge is in the case the tool can be placed on the case with the dowel loose to determine the powder level.  Tighten the set screw, get a measurement with a caliper, then adjust the dowel to whatever wad seating space you want.  The short end works well to seat a wad straight to end up at the bullet base when the bullet is seated.

JS

I got lazy back in about '98 and quit using black - after about 10 years of it in cartridges.  For simplicity I switched to smokeless using the thought similar to how we loaded for black - little or no empty space in the case.  I tried several different smokeless powders and when I was shooting 300 to 400 rounds a week I found that XMP5744 out performed everything else I tried - in three different rifles, three different calibers.  The rifles were rollers and high walls.  Calibers were 45-90, 45-70 and 38-55.  In all cases my best results were heavy bullets, 350's in the 38, and 535 and 600's in the 45's.  In the course of three years I used close to 35 lbs. of this and nearly 1800 lbs of lead.  Never saw a ringed chamber nor signs of pressure -blame that on common sense loading or luck.?   I took an 8 year sabbatical from the sport and when I returned a few things had changed, XMP was changed to AA and I'd heard of pressure issues and blown actions...   Hmmm.  I heard about the problem at the Q, and no cards or wads allowed... When I started shooting again, with no intention of doing the diligence as before, I loaded and omitted all the cards and wads (TP) I once used and with practice and focus I was getting the same results as before.  A hot barrel was still the norm and with lighter bullets unburned powder is still common.   

Since starting again I've burned through nearly 24 lbs. of AA5744 in the past couple of years - in more calibers and rifles than I care to confess.  Even with some of the latest equipment I have now, I see no ringing nor do I detect pressure signs.  AS with all things potentially hazardous, common sense and thorough study goes a long way.   
Greg