Ive been working on a remix for the 43R, thought of some ideas that might make it more viable to increase powder capacity safely, been trying to test it, but when just test firing primers, the rim loves to sheer off when the primer is struck. Kinda sucks trying to figure out how to prevent it.
this post was submitted on 26 Oct 2025
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You need to print the ammo better if you are shearing the rims.
Make sure that you are using a quality pla+, that has been dried. Print hot and very slow. I recommend the bed being at 70C.
You will never shear a rim with the firing pin strike if you print the ammo well with quality material.