I'm from Canada, as I said the lineman in america are much bigger, faster stronger athletes.. I took a look at our combine results, some of the best offensive linemen in my province only lift about 250-300 max bp.
The top grade 12 recruit offensive lineman from last year only did 279 for his bench and the top recruits in my province at combine for runninbacks were lifting 225.
As for the grade 11's the top offensive lineman in MY class of '17 is 6'0" 267 lbs and lifts 312.75 for his max bench and the top runninback in my class (team canada player.) lifted 265.50. Keep in mind I'm literally living in the gym this off season and I want to get my bench to atleast 300-310.
Here is the top offensive tackle recruit for the class of '17 in USA.
Foster Sarell - Hudl
His max bench press is 315lbs and his squat is 405 lbs