In lieu of buying 38/55 brass (little too short) or making more brass using 9.3x72r brass, I bought some 8x58.5r Sauer brass which I annealed and fireformed. It makes excellent brass.

My load of 22 gr of IMR 4198 with 180 gr bullet yielded 1600 fps which is a little low for what I want.

What are your thoughts for loads? As a reference, I read the following"

* 9x58.5 r reloading: I saw someone used a load of 37 gr of IMR 4895 with a 200 gr bullet for 1900 fps in a 9x58.5r Kettner double rifle.

* 8x58.5r reloading:

* 200gr Speer over 37gr of AA4350

* German loading manual "Viederladen" (year 2000) has five loads listed, one of which is 34.5 grains of IMR4064, Rem 9-1/2 primer, and a 196 grain .318" diameter bullet seated to an overall length of 76 mm. This gives 595 meters per second (barrel length not specified) and is listed as "max" pressure, elsewhere stated to be 2200 bar. Seems a bit on the hot side to me, but at least it's a data point with an American powder.

* COTW: Cartridges of the World show the RWS factory load 1690/196gr SP. It also shows 2 loads;
196 SP 34 gr IMR 4064 1942 fps
196 SP 39 gr RI-19 1870 fps

The reason for looking at the 8x58.5 r loads is that with a larger diameter bullet, the pressure should eb less for the same charge and bullet weight.

What are your thoughts?