Someone once corrected me on the proper use of Black Horn powder here. Now that person is violating the caution on the front of the jar." engineered for modern (in-line) muzzleloaders with 209 ignition". I think it's pretty clear that shooting BH in a side lock would violate the product's disclaimer. Please think before tinkering with firearms or modifying their structural integrity serious injury could occur! If there are any suggestions to alter certain firearm parts I will consult prior with Buckfever and then delete such posts. I don't see where the cautionary posts have had productive results. There is no question at all that factory warranties are being voided.