OK @planetcybertron you’re not going to like any of this until about halfway. On the plus side, you’ll be able to fix all this quite easily and relatively quickly. There’s no way you can pull 275 lbs the way you do and be weak, so it’s just that you’re a bad squatter right now. With correct technique you’ll rapidly become able to display that strength.
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It’s not the angle. That’s a half to quarter squat. Even going a few inches deeper you’d be well high. This explains the difference between your squat and DL. At a guess, your max squat to parallel would be about 225 lbs, tops.
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For safety you need to walk out differently (properly): walk out backwards and rack the bar forwards.
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Your stance is too wide. It’s almost equipped squatter wide. That is probably why your hips are beat up. It also makes it very hard to hit depth.
Here are some fixes that should work:
- Grip - width is fine but focus on not letting your wrists bend or squeezing the bar. Relax your arms from the elbow down
- Upper back - pull your elbows into your sides, not under the bar. Push your head horizontally back into the bar
- Bracing and unracking - take your air and arch the bar out, don’t use your legs. Squeeze your glutes the moment you unrack. One foot back, other foot back, adjust one step each side for width if necessary. Breathe and let the bar settle before squatting.
- Stance - start with shoulder width or just a tad wider, toes pointing slightly out.
- Bracing and squatting - take your air again, squeeze your glutes hard and pull your elbows into your sides. Push your head back into the bar. Squeeze your abs. Descend by pushing your knees out and sitting down. Weight on your heels and outside of your feet. Hit depth and immediately reverse direction. Lead with your traps and focus on pulling your elbows into your sides.
For the moment, just groove the technique. Don’t go above about 132 lbs. Do lots of fives, maybe three times a week. Video every single set and rep, from the empty bar onwards. This will help you learn what parallel feels like. When you can pretty reliably squat 132 to parallel, add 10 lbs to your squat. Don’t even attempt to max out for around 12 weeks.
For assistance, I would highly recommend lots of back raises, lunges (twice weekly, try hitting 150 reps between the two every time you trying them) and some ab work (ab wheel is good, hanging leg raises too).