Ok, I'll see if I can get my info here. I'll start with the smallest and work my way up......
19" suppressed .270 Sherman, 1-8 twist
140 SBD II
CCI 200
Norma brass
3.500" OAL (.075" jump)
62.0 grain RL-26
3030 fps.
Max pressure was around 3160 fps with 64.5 grains, but this node was very accurate and forgiving. Will soon be loading the same bullet in another 25" barreled .270 Sherman and Peterson brass, interested to see what I end up getting for velocity. Below is what it looks like seated to touch the lands. The marker on the right bullet shows where the boat tail bearing surface starts.
Next,
24" Suppressed 300 WSM, SAAMI spec 1-10
175 BDII
CCI 250
Norma brass
2.930" OAL (.055" jump)
66.5 grain H4831sc
2875 fps
Max was 2920 fps @ 67.4 grains. This is out of a factory Savage ultralight with a proof Carbon barrel, loosing a ton of capacity due to the short throat. Below, 2.930" -
Next,
24" .338 Norma mag, CIP chamber, 1-9 twist
250 SBD II
GM215M
Peterson brass
3.656" OAL (.050" jump)
92.4 grain Retumbo
2900 fps
never found pressure signs, and I worked up to 93.5 grains @ ~2940ish. Below is seated @ .050" off I believe.
This is what I got on the BDII's, soon as I get my barrel (8 twist Bartlien) I will start working on the 205's in a custom throated 20" 30 Nosler. I have VV-N565, IMR7828ssc, H1000, RS Magnum, Retumbo, RS-LRT, and some RL-33. Any suggestions on what I should start with? I was planning on trying H1000 and N565 first. Also, do these 205's seem to like to jump, or has anyone had them shoot well close to the lands? Below is a machinist up of the 205 SBDII, 215 Berger, and 212 eld-x.
