Other notable morning scores included a 76 from previous Reid trophy runner up Tom Charley, a 77 from Shirley home player Dan Withington and a 77 from Daniel Pearce of Maxstoke Park.
The championship was still all to play for heading into the afternoon.
Sam started the afternoon round solidly, pars at the first four and a birdie at the 5th would see him extend his lead over the field. However his first dropped shot on the par 4 7th would see Sam make the turn in level par and +1 for the day.
Joe began the afternoon with a double bogey five at the par three 3rd but a bounce-back birdie at the 4th and a stiffed approach to set up an easy birdie at the par three 8th would also see him level heading into the back nine.
Sam bombed a drive onto the par four 10th but couldn't convert his eagle putt and had to settle for a birdie three. He continued his progress until he reached the 13th tee, where he slightly over hit his tee shot and was faced with a tough shot in order to escape the trees.
Sam struck it beautifully but it seemed to pop straight up off the clubface and just caught the tree. A few shots later saw Sam make a disappointing seven, the only real blemish on an otherwise flawless performance and he would finish his round on 74.
Joe meanwhile had turned it up a gear. After a tactically laid up tee shot, Joe pitched in for an eagle two at the 10th. Now two under for the round he continued to impress making another birdie on the 13th, the same hole that Broadhurst took seven, a four shot swing on one hole that would be the turning point in the championship.
Joe dropped one shot on the closing stretch to finish with a two under par 70, the lowest round of the day, which saw him crowned Warwickshire Boys Champion 2015.
In the wake of his victory Macilraith said, 'I feel great and played really well today. It's been a good day.'
The Under 16s Championship wasn't settled so easily. Tom Cleaton made a late charge with an impressive second round 71 from the talented Rugby junior to finish one behind but at the close of play two players were tied for the Under 16s title: Daniel Withington and Daniel Pearce. The two Dan's both finishing on ten over for the tournament meant they would have to go out again in a three hole play-off.
Nothing separated the two players after the first extra hole but the par four 11th saw Pearce make a solid four whilst Withington had found the trees and needed to play a difficult punch to chase it round the bunkers onto the green. His shot snagged in the rough and he could only make a five.
The final hole was the 160 yard par three 12th. Pearce was first to hit and nailed a towering iron shot straight over the flag, ending up 25ft behind the hole.
Withington's sweetly struck approach finished just off the back of the green and he was faced with a delicate chip to keep his chances of winning alive. In front of the watching spectators, he played an exquisite shot to inside a foot, exceptional considering the circumstances.
Pearce, who was left with two putts to win, calmly rolled the ball up to the hole and secured the title.
Following his win Pearce said, 'I was very nervous. My hands were shaking as I stepped up to the tee and I struggled to keep my ball on it.' He also said, 'I didn't realise I could win, I just kept going steadily and not really worrying.'
