First .223 Batch

[.45heat]

Hi fellow Calgunner Reloaders. Just did my first 100 .223 using my spent brass from PMC Bronze line ammo. I'm reloading using single stage RCBS press. This is what I did. From doing more research after the fact I think some of my case prep is only necessary for match ammo.
1. Decap
2. Tumble
3. Primer Pocket Clean
4. Primer Pocket Uniform
5. Lube
6. Full Resize
7. Trim
8. Chamfer and Debur
9. Tumble
10. Prime
11. Charge
12. Bullet Seat...Done

Couple questions that I had, my brass had variances of 1.753 to 1.758, I just trimmed all to 1.750. Just bought a 100 pack of brasss of Winchester .223, they all also have variances, should I just trim to 1.750 or if they are within the max length, should I not trim. Another concern was charging. I'm using a RCBS Uniflow Measure. I was checking every 10th charge, and some were a grain less or two grains more than my goal of 22.7. How concerned should I be on that note. I also didn't flashhole debur. Is it necessary? If I flashhole debur, and primer pocket uniform, do I have to do it everytime for that lot of brass, or once for the lifetime of that brass is okay? Thanks in advance, your help is greatly appreciated.

[Sunwolf]

Deburr and uniform once and done.Uniflow will always have some variance especially with stick powders,that is why you measure on the low side and trickle the rest.I wouldn`t trim if they are within length on new brass unless i was precision loading for benchrest or long range.Case gage all your brass new or not.