The idea would be to scale up the rockrat 50 bmg to .564 and use the flat base design to avoid the gas check issue. Target weight to be 950 grains. Loads would to be worked up accordingly.
With those specs/constraints, the intent is to recreate a training round the british used in the early 40's.
Btt for interest
I do not think to many people have a .55 caliber to shoot a 950 gran monster.
I do have a black powder that is 58 caliber, in no way am I gona shoot a 950 gr boolit from it
with or without me holding it.
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Plus as I recall Bannerman converted a lot to 50 BMG
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The Boyes Rifle in .55 cal. is a DD and needs paperwork as Nise said.
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I even seem to recall them being sold in those ads in the front of gun rags back before Kennedy got whacked.RobertOriginally Posted by Artful
What does DD stand for
Bobby
Destructive Device; NFA-regulated, requiring paperwork, tax stamp and long wait for approval.
Anyone?
Mostly a PITA less you are really into the collecting scene. Had a good friend that fell into ownership of one......DD registered, plus well over a hundred rounds of original ammo. He never did shoot the first round of the original stuff and was debating converting the thing to a .50BMG which I thought was to route to go. Unfortunately he became ill and had to move back to his original home in Ill. so he disposed of that gun to a dealer in Wis.. Real shame as he let both that and a nice M/2 C. go for peanuts!
Id have use for a 55cal in 20ga, but 950gr would be way too heavy for 20ga
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A pretty rare gun in 55 cal boys. The couple that i have seen were rebarrel to 50 BMG. Funny part the mags were sold as door stop, big paper weights. Early gun magazine ads they try selling them as big game rifles. Back some 20 plus years ago a single round of 55 cal was like 6.00 each.
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| BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
| BR | Bench Rest | M | Magnum | RN | Round Nose |
| BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
| C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
| HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
| PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
| LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
| GC | Gas Check |
