I ordered some Berry's for the first time because it is close to the profile of Hornady's HAP round, but for half the price.
Berry's lists the OAL at 1.169, Hodgon lists is for 1.150. I can't get a round to "plunk" and spin until 1.118. Still won't pass a case gauge until 1.075.
In case it was the crimp I slowly increased and rechecked it until it was clearly over crimped.
Hogdon lists a powder charge for 3.6-4.1 for that 1.150 length with unicorn .750 length brass.
Can/how do I safely guesstimate a starting load for an OAL that is .094 shorter than any published data? Am I safe to start with the 3.6 or do I need to go lower still given the substantial difference?
Berry's 124 Target Hollow point https://www.berrysmfg.com/item/bp-9mm-356-124gr-thp
Primer: WSP
Powder: Hogdon Titegroup
Brass: Range pickup, large length variations