Cool, actually just PMed looking for the stuff you use. Thanks. Possibly more questions to follow.You may see alum as a pickling agent online. I have linked the stuff that i have gotten the best results from below. About 12$ for a 1.5 lb bag and it will generally take you about 75-85% of a bag for a deer hide. Make sure to use it liberally and coat all exposed leather.
Anthony's Premium Alum Powder, 1.5 lb, Batch Tested & Verified Gluten Free, Granulated Pickle Powder https://www.amazon.com/dp/B07M8DLW9...abc_4Y0WRJMNDZN53S1GGN1A?_encoding=UTF8&psc=1