CTDolan
AH elite
I’m pretty knowledgable when it comes to such things but have to admit that I’m stumped by the muzzles of a Heym. I’ve seen two such examples, the business end with no evidence of a regulating wedge of any sort, just two muzzles, the inner surface filed for close contact. The picture below is a 600 NE (from Lewis Drake...along with its target). The other I’ve seen was a 577 NE. Maybe this is how they do the ultra-heavies, not sure, but either way, how the heck do they regulate such an arrangement! @cal pappas , have you anything so say?