After another day of domination, Berkshire set Shropshire what looks to be an unachievable target at Shifnal. They extended their first-innings lead of 208 to 408 before declaring with well over a day's play remaining.
Shropshire started the second day on 55-3 and quickly moved on to 82 to suggest they were about to make a respectable reply to Berkshire's formidable 350-8. But seamer Andy Rishton triggered off a collapse which saw the home county reduced to 89-6, before finishing on 142 after 59.3 overs.
Rishton (pictured) claimed 5-46 from 12.3 with three of his victims falling to catches by wicketkeeper Sukhi Kang, who is making his first championship appearance for three years.
Despite a 208-run lead, skipper James Morris maintained his tradition of not enforcing the follow-on, instead preferring to see his side extend their advantage as quickly as possible. They did just that, racing to 100 in 101 minutes and 200 in 183 minutes, spanning 52 overs.
Euan Woods top-scored with 50 off 62 balls which included seven boundaries, while Michael Williams remained unbeaten on 36 (no boundaries) and Luke Beaven 16 9 (1x6, 1x4)
Savin Perera contributed 24, fellow opener Archie Carter 17, Morris 19, Rishton 11, Luke Hollman 2, Chris Peploe 5 and Kang 17, which meant Callum Creighton did not get a chance to bat on his debut.
Rishton was soon among the wickets again when Shropshire started their second innings, bowling skipper Joe Carrasco for 1.
Berkshire are seeking to make it four Western Division wins in succession for this season and 10 in all.
Alderley Edge: Devon 85 & 213 (David Wainwright 5-43), Cheshire 305-9 (Robert Sehmi 75, Rick Moore 52). Cheshire (23 pts) beat Devon (4 pts) by an innings and seven runs.
Redruth: Dorset 136 & 95-1 (Alex Eckland 51 not out), Cornwall 234 (Matt Robins 94).
Challow & Childrey: Oxfordshire 294 (Tom Cosford 76, Gareth Andrew 67 not out) & 210-7 dec (Jordan Garrett 79), Herefordshire 173 (Matthew Warner 5-24) & 82-1.
South Wilts CC: Wales 222 (Cameron Herring 67) & 211 (Joe King 6-56), Wiltshire 140 and 154 (Thomas Bevan 5-59). Wales (21 pts) beat Wiltshire (4 pts) by 139 runs.