Thread: Reloading advice for Winchester Model 70 7mm-08

Greetings @Fatberg,
Welcome to handloading. How much of a rabbit hole handloading is is what you make it. The 7mm-08 came out around 45 years back when the high BC super pointed projectiles did not exist. Consequently the long projectiles we have today need to be seated deep into the case to go in the mag. In line with KISS principals to make things easy for yourself it is best to start with the shorter projectiles like the Hornady 139 grain Interlok or the 140 grain Nosler Ballistic Tip. AR2208 is a good powder to start with and max loads I have seen are 43.5 grains for the Hornady and 42 grains for the Nosler. If your friend has a chronograph joy. You can load a couple of start loads with the projectiles seated to the same OAL as the factory loads and chronograph them to validate the data. You should expect your velocities to be about 50 fps less than the Hornady/ ADI data and 100 fps less than the Nosler with its 26" barrel. If the velocity checks out then you can up the charge to halfway between the start and max loads or 40 grains for the Nosler and 41.5 grains for the Hornady and load up some for a check zero. Spring is upon us and the rest of the rabbit hole can wait. PM me if you wish.
Regards Grandpamac.