243 ai trim length

Hey guys what's the trim length of 243 ai cases?


---
I am here: http://maps.google.com/maps?ll=44.548619,-94.365247

Same as the regular .243.

Max length, 2.045"

Trim to length, 2.035 according to Speer.

You'll find most AI cases will shorten slightly after fireforming. I didn't trim new cases but once they were fireformed, I trimmed them to a uniform length dependent on the shortest case in the batch.

Quote:

---

Originally Posted by trappst

You'll find most AI cases will shorten slightly after fireforming. I didn't trim new cases but once they were fireformed, I trimmed them to a uniform length dependent on the shortest case in the batch.

---

+1 i do the same

Got ya thanks Guys


---
I am here: http://maps.google.com/maps?ll=44.548556,-94.365169

Quote:

---

Originally Posted by calib

Quote:

---

Originally Posted by trappst

You'll find most AI cases will shorten slightly after fireforming. I didn't trim new cases but once they were fireformed, I trimmed them to a uniform length dependent on the shortest case in the batch.

---

+1 i do the same

---

+2!

I don't trim untill after fireforming,then just square up the mouths,or .015 +/- less than the measured chamber,with a sinclair chamber length gage.I've
found most brass to be much shorter than the chambers.I never depend on the recomendations for trim length,in the manuals.

Quote:

---

Originally Posted by Joe O

I don't trim untill after fireforming,then just square up the mouths,or .015 +/- less than the measured chamber,with a sinclair chamber length gage.I've
found most brass to be much shorter than the chambers.I never depend on the recomendations for trim length,in the manuals.

---

Same here. Those little plugs have saved me a lot of time and work.