loose noose
Member
Just recently started reloading for the above cartridge (been reloading for over for over 45 years), and came across my once fired Sellier & Bellot .303 empty casings.
After re-sizing the cartridges, getting the proper OAL, and cleaning out the primer pockets, including using my reamer, etc. I noticed that the CCI large rifle primers would not insert properly in the pocket (protruding too far out "high primers").
Just before discarding the prepared cases, I tried some Winchester Large Magnum Rifle primers I had on hand, and with quite a bit of effort managed to get them inserted properly.
My question is using a Sierra 174 grain .311 HP BT bullet and 39.5 grains of H335 powder (note the max listed in my Hornady Reloading Manual is 41.0 grains starting is 38.0 grains), with an overall length of 3,075. Will the pressures be too high in my recently acquired British Enfield No.4 MK2 in excellent condition. I generally use the recommended loads, however that Sellier & Bellot brass is garbage as far as I'm concerned.
Any comments would be greatly appreciated, prior to shooting any of this ammo in my rifle. Note I have used Remington Brass with this same load data with out a problem the only variable is the magnum primer.
After re-sizing the cartridges, getting the proper OAL, and cleaning out the primer pockets, including using my reamer, etc. I noticed that the CCI large rifle primers would not insert properly in the pocket (protruding too far out "high primers").
Just before discarding the prepared cases, I tried some Winchester Large Magnum Rifle primers I had on hand, and with quite a bit of effort managed to get them inserted properly.
My question is using a Sierra 174 grain .311 HP BT bullet and 39.5 grains of H335 powder (note the max listed in my Hornady Reloading Manual is 41.0 grains starting is 38.0 grains), with an overall length of 3,075. Will the pressures be too high in my recently acquired British Enfield No.4 MK2 in excellent condition. I generally use the recommended loads, however that Sellier & Bellot brass is garbage as far as I'm concerned.
Any comments would be greatly appreciated, prior to shooting any of this ammo in my rifle. Note I have used Remington Brass with this same load data with out a problem the only variable is the magnum primer.