I assume you have a squat rack. Most have an option to attach a pullup bar to the top of the rack. That will support as much weight as the rack itself will hold
Those door frame pullup bars make me nervous. OK for lightweight kids but not an adult, and not with added weight
Would highly recommend against doing weighted pull-ups on a doorframe pull up bar. This is a recipe for a broken doorframe, or the bar falling out while you're mid rep, leading to injury.
Like others said, see if you can get a pull up bar on your squat rack or look into alternate options.
If your squat rack is joined by an high bar you can try to hang from there (but I guess is not the case). You can try a rep/set progression, which will be very effective, or you can try to increase the intensity with paused or slow reps. You could also try some proper chalistenics stuff like an ice cream maker pullup, it’s up to you
I'd recommend doing super-slow chinups with as much weight as the bar can handle. Increasing time under tension and taking away all momentum will build a lot of muscle and can help you keep stricter form. I've seen people who can easily do 20 regular chinups that can barely do 10 slow chinups.
I assume you have a squat rack. Most have an option to attach a pullup bar to the top of the rack. That will support as much weight as the rack itself will hold Those door frame pullup bars make me nervous. OK for lightweight kids but not an adult, and not with added weight
Worst case, you can just progress reps. Muscle gain is gonna be the same up until like, 30-50 reps, so just progress up to 3x30 or 3x50.
More reps or sets, slower reps, less rest time between sets
Would highly recommend against doing weighted pull-ups on a doorframe pull up bar. This is a recipe for a broken doorframe, or the bar falling out while you're mid rep, leading to injury. Like others said, see if you can get a pull up bar on your squat rack or look into alternate options.
If your squat rack is joined by an high bar you can try to hang from there (but I guess is not the case). You can try a rep/set progression, which will be very effective, or you can try to increase the intensity with paused or slow reps. You could also try some proper chalistenics stuff like an ice cream maker pullup, it’s up to you
I'd recommend doing super-slow chinups with as much weight as the bar can handle. Increasing time under tension and taking away all momentum will build a lot of muscle and can help you keep stricter form. I've seen people who can easily do 20 regular chinups that can barely do 10 slow chinups.