Isn't it difficult to have setback with lead bullets?

[Y-T71]

Good question.
I don't have any scientific way of doing it but I take a "before" measurement with my dial calipers, hold the cartridge in question tightly with both hands, put the bullet tip against my benchtop and giver 'er a shove.

I'm not try to hurt my hands but, I feel, if I'm doing it right then it should be...uncomfortable.

Also, making up a couple of dummy rounds and chambering them from the magazine a time or 2 will let you know if there's a problem.

 

[Shivahasagun]

Case tension is a big deal when it comes to your bullet not getting pushed deeper in the case

I'm using Dillon dies In my SD.

If you look at where the bullet base ends up in the brass, you can see how much "case "neck" tension" there is; no chance of a setback (lighting might not be the best but, trust me, it's noticeable under proper lighting)

Lots of people don't like the way these look but, believe me, these bullets are not going to move backwards (into the case)

These are .45's

View attachment 1113187

This is how mine look, what I thought was "normal".

So when I kept reading warnings about setback I kept thinking, "how the heck is normal operation going to force that bullet against that crease any deeper into the case?!"

And that is why I asked.

It appears my assumption was correct and with as much neck tension as my auto pistol reloads have I needn't worry much about setback. Thanks!