Cz Shadow 2 - 124 frontier 124gr & N320 Where to start

[sean.cgv95]

I just finished my black badge course last weekend and and getting set up to start loading rounds for this years matches. I have picked up VV N320 and 124 gr, Frontier bullets, and cci SPP. I will be loading on a dillion 650 XL and was looking for a good starting point, Also when you are starting a load how many test rounds will you make? I have heard anywhere from 5 - 30

a couple of friends loads are the following i was going to try the first one but not sure because of him using that in in a 1911.

VV n320 3.9 gr
col 1.12
campro 124 gr

VV n320 3.5 gr
col 1.10
campro 147 gr


Thanks in advance

 

[4n2t0]

1) Always find your own OAL.

Here's how to determine your OAL: LINK

Here's a plunk and spin video: LINK

2) Both those charges are appropriate for their respective bullet weights. Chrono for exact numbers out of your Shadow 2.

3) 20 test rounds should give you a large enough sample size. For experimental load development (e.g. My 9mm WST load) I go with 5 rounds because I really don't know what to expect at first. When developing a load try to cover the data's load range in 0.2 gr increments (e.g. Data load range = 3.2 gr - 3.6 gr ---> 20 x 3.2 gr, 20 x 3.4 gr, 20 x 3.6 gr).