Huvius, I agree the 130gr charge seemed light compared to the typical starting range of 135-140. I started at 137. For the next batch I'll take the charge down to 130 and retry all 3 bullets I have. I'll try both FFG and FFFG at 130.

The maker's notes on regulation "Regulated for the 130grns of Black Powder and Eley's express bullet, using a straight solid-drawn case" is not something I researched before yesterday's outing to the range. I should have...after buying a reprint of Eley's 1892 ammunition catalog from Cornell Publishing as a PDF, I was able to confirm what you just said...namely that "Eley's express bullet" in 500 BPE 3" was 340grs. Thank you for your help and compliments on the rifle.

degoins - Thank you!