M. H. bullet dimensions

[Bruce_in_Oz]

Not keen to rip open my ONE original .577-.450 cartridge tofind out.

Has anybody ever seen an "official tech drawing of this bullet..

I suspect it has a long taper and this is probably related to he long, tapered "free-bore" in the barrels. The only way to accurately measure the barrel interior is to unscrew it from the body.

Lots of folk recommend various "modern" cast bullets with grease grooves, etc. Does a paper-patched bullet need grease grooves and how would the paper and "grease" / wax interact?.

Also, as near as I have found out, the original rolled brass-foil cartridge bodies were filled with powder, wad and patched bullet, BEFORE the neck was "rolled" / sized down against the bullet.

Try stuffing a tapered?, paper-patched bullet into slightly undersized rolled brass neck. MESSY.

[jamie5070]

Ask on tapatalk britishmilitaria forums. Lots of people there with technical and shooting info.

[browningautorifle]

.577-.450

So, I didn't do those but the big brother...the .577 Snider. I paper patched and tucked the pigtail up inside the base but didn't lube the grease grooves. I used a Lee single cavity hollow base mold. I seated into belled cases and had no trouble with them doing anything to the paper. Worst case, you seat in a belled case and crimp after, an additional step. The paper keeps the bullet from leading and stripping, engages the rifling.