"Short Barreled" 204 Results?

[Chad]

I have a suppressor on order and want to shorten the barrel on a 204 to make up for the added length and weight of the suppressor. Does anybody have any real world experience with velocity testing the 204R with 19"-21" barrels? I've seen Bullberry's test, but i'm mostly interested in results with 35 and 40 grain bullets. I just want to be sure before I hack a chunk of barrel off

[Sth Oz Dan]

I have a 20" barrel. Here are some speeds for you:
26 VG - 4100
35 Berg - 3700
39 BK - 3650

I've never seen cratering in my primers during load tests, so could squeeze a little more out of it.
But above these speeds, loads gave me more felt recoil, more noise, and less fps gain/grain.

[Chad]

Thanks Dan! That's right about where I was hoping for. Could you tell me what powder you were using?

[Sth Oz Dan]

For the 26 & 35 - ADI Benchmark2
And 2206H Behind the 39
The Hodgdon and Alliant equivalents can be found on the ADI website.

I'm on my phone ATM and can't remember exactly, but I think (check yourself first to be sure) that:
BM2 = Benchmark
2206H = H4895