RDub
Member

Hello
Most of the 38 Special reviews that I did were shot with two guns.
A Taurus 85 Ulta Lite 2 inch barrel and a Smith & Wesson model 15 with a 4 inch barrel.
First I do forensic exam of the ammunition. Next I shoot a group while chronographing with each gun. 10 yards with the 2 inch Taurus 85 and 25 yards with the 4 inch Model 15. Chronograph is a Oehler 35P
Then the ammunition is shot out of each gun into a 55 gallon plastic barrel of water. The bullets are then recovered, photographed and then measured for expansion. In cases where the bullet fragments and loses its jacket, a weight is taken with all the recovered material and also a weight taken with just the lead core.
Here is the link to all the photos of the review;
38 SPL B.B. 158gr SWCHP (non +P) — Postimages
Here is a link to RimRock bullet Co.
g/ch .38/.357 158 gr. SWC-HP per 100/ in a plastic ammo box
Here is the data sheet;

I got fairly decent expansion out of the 2 inch Taurus and even better out of the 4 inch 15. Interesting that I get more velocity out of a 2 inch gun with this ammunition than I do from the fastest 158gr lead RN factory loads out of a 4 inch gun. And Buffalo Bore says this ammo is standard pressure.