BP has no real airgap - less than 1/6" from what I hear........ so I used a wad with 70gr of BP and crunched it a bit.... YMMV
And yes BP is an EXPLOSIVE - as per @Smokin .50 other powder is a propellant !
Congratulations— why does proposing make funds tight — she should say yes even with an aluminum foil ring
A gun belt makes a big difference — stiffer, supports the gun and makes draw easier
what size waist are you?