I've just had another look at Page Publications' Blazing Western Stories #4:
It turns out the contents of this issue are identical to Page Publications' Western Illustrated Stories #6:
Both covers are by Keith Chatto.
I assume Blazing Western Stories #6 was published in 1973, based on the cover price and advertisement date code on the rear cover. I also assume Western Illustrated Stories #6 was published in 1974 as per AusReprints. I don't see a cover price on this issue, but #'s 8 and 9 each have a $0.30 cover price, so I'll assume #6 was also $0.30.
I won't be surprised to find there's yet another reprint of this issue.