Ok fellas, I have a funky predicament, so bear with me.

I’d like to try a couple loads for 357 or 38 in 357 brass. I only have 357 brass and a few 357 maximums I could trim down to 357 mag length. And I don’t have any small pistol primers, but have small rifle primers.

Bullets, I have roughly 75 hard cast lead 157gr, and a box of extreme 158gr copper coated. Powder is unique, bullseye, 2400, and h110.

So, from what I’ve read, loading 38 in 357 brass, I need to add 10% to the powder, but using srp, I need to cut 10% from the powder. I’m just looking for around 800-1000 fps tin can fun.

Is this achievable or do I have such a Frankenstein brass primer setup, I’m asking for trouble? I can wait if primers are a huge problem because I’m not paying it right now.