I have a win 76 and a win 86 both do the same thing with the primers on mine its the firing pin hole. They are big just the way they are still shoots fine. Ithink good brass and minimal sizing will help. Neck size only I have a Lee Enfield with excessive head space full lenth size brass life is no good neck size only they last a good long time cast boolit loads also.
Slugged the bore tonight. Bore is rough as seen in the pic. Slugged at .315
Pic is not the best as iPads don't have a flash.
Life is so much better with dogs!
|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|