Thread: 40S&W 180gr Campro questions

Originally Posted by Towely

This^^

If you manage to push the size down at the case mouth any smaller then it turns into a crimp. Just remove the excess flare you have created is all you have to do. Or, dont flare so dont remove.

On a side note R93, do you use a bullet feeder? I have never had to balance a projie on the case mouth as the press turns so never needed to flare the case mouth. I just push the projectile up into the hornady seating dies floating sleeve with my finger and when the ram is half way up i just pull my finger out of the way and it drops down onto the case ready for seating. (I apologise if this is a retarded question, i have no idea how a bullet feeder works and i dont understand why one needs to balance a projectile on a case mouth)

I think I am dumb enough to jam my fingers if I do it like you do. Especially with any speed.

I don't have a case or bullet feeder and have a routine that for me is fast.
As I crank the handle I am reaching for another case and projectile.

And the flare I use is hard to see with the naked eye. It is only just enough to keep the projectile in place when it indexes.

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So, i think i may be over crimping, i can feel the indentation with my thumbnail

think i will just remove the neck flare and that only, will be interesting to see the results and difference, glad now i kept the targets to compare

Loaded up some 38 and 357 to test the crimped VS uncrimped in a revolver.

I shot from 25 off a decent enough rest. 4 strings of 6 for each load.

If anything I only noticed a slight improvement with the crimped 38 loads. 357 was much the same.
I am not sold on the idea that crimping is better... Yet.

I also managed one of the best groups I have ever shot with my 40 at 25 freestyle so happy with that.


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Any improvement is good! The object of crimping revolver loads is twofold; one to provide a consistent bullet pull that helps to give consistent pressures (uncrimped relies solely on the neck tension of the brass that can vary considerably), two is to prevent bullet movement from recoil in the unfired rounds.

Originally Posted by gundoc

Any improvement is good! The object of crimping revolver loads is twofold; one to provide a consistent bullet pull that helps to give consistent pressures (uncrimped relies solely on the neck tension of the brass that can vary considerably), two is to prevent bullet movement from recoil in the unfired rounds.

We have a ransom rest at the club but it is ancient and I have never been shown how to use it.

I was consistently shooting around 2-2.5" off the rest for 5 rounds. Always had one out a bit.
I shot the best group of the day freestyle with the 357 loads.

To be able to do that at 50 is another thing altogether imo.

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