Never even heard of them!
"Wargame Rules for the English Civil War. Bibles & Buff Coats is a set of tabletop miniatures games rules that portray the forces supporting King Charles I and those supporting Parliament during the English Civil Wars. Players take on the roles of Generals who command the unique and varied forces of Foote, Horse and Artillery of this colorful period. Using pikes, muskets, swords and cannons, players can either lead their troops to a glorious victory for their chosen cause, or to an inglorious and fatal defeat at the hands of a more ruthless and cunning opponent. The future of England is in your hands."https://www.whpsupplyroom.com/gaming/p/bibles-and-buff-coats#gsc.tab=0I found a group for them that apparently has a QRS:
https://groups.io/g/BiblesAndBuffCoatsBrowsing through there are a couple of questions on what the rules are like - e.g.
"Basing can be single figures, or multi-figure bases. My foot figures are a mix of singles and four-figure bases. My cavalry are mostly on 2 figure bases
Casualties are individually removed or ringed in the case of multi-figure bases.
Units are generally between 10 - 40 figures depending on type of unit.
Figure scale is adjustable between 1 fig = 5 men and 1 fig = 50 men. This allows you to play larger battles on a smaller table and/or with a smaller collection.
There are a couple of the unit and formation diagrams in the files section of this group that may help. They are also in the rules. "