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Group sizes were cut in half when I switched to properly sized Lapua, Norma and Norwegian brass. I had been loading 6.5x55 U.S. and Korean PMC brass with -06 sized bases for several years, and getting OK, but not exceptional accuracy. On using Norwegian military, and then later purchasing fairly expensive Lapua and Norma brass, without making other load changes, group sizes shrunk dramatically for all the loads I tried in several M-96 and M98 rifles chambered for 6.5x55. The accuracy improvement was worth the extra expense.
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 |