Thread: 284 win getting low velocities

The .284 is an overbore cartridge and is designed for longer barrels with moderately slow powder (factory ballistics are based on 24" barrels). You could carefully work up some loads with a slightly faster powder but you are never going to reach factory velocities with a 17" barrel. 2600 fps is a perfectly respectable velocity for anything out to 250-300 metres.

the short barrelled 284 win has become somewhat of a trend here as its pretty efficient and can work well in a short barrel.

the rifle is built to shoot up to 600m or so which should be quite doable.

thanks for the tip though mate!

your original posts on your 284 was one reason that I wanted to do the conversion! rifle is set up similar to yours.

Greg at custom guns in Invercargill did the chamber and the throat isn't a tight neck. I wanted a little more room to play with with different brands of brass/ I don't have a neck turning set up.

Brass is factory Norma .284. can check diameter of a loaded round tomorrow

Measure the neck diameter of the fire cases, then measure the neck diameter of neck with bullet seated and pm me. Happy for you to call me for a chat about it all.