Thread: 284 win getting low velocities

Originally Posted by distant stalker

I had pressure at low speeds on mine, was getting an internal donut at the neck/shoulder junction, neck turn and cut slight relief into this area to let brass flow into void and prevent buildup on inside. Been a couple of guys on here with same issue and same fix

Yep same, here's my original post about my problem https://www.nzhuntingandshooting.co....chamber-32589/

Originally Posted by GWH

Yep same, here's my original post about my problem https://www.nzhuntingandshooting.co....chamber-32589/

Lol on my phone and didn’t see there was another page with solution already posted ��

Originally Posted by Nick-D

Yeah the 150's over rl17 will get things humming. Fella on the other forum getting 2900ish with the same load

Progress report: Managed to get to 2750fps with 53.5g Re17 and 150g SGK. Still very accurate (.5 moa). Got pressure signs at 54 (sticky bolt but no issues with doughnuts in the case neck.) This is a good improvement on the 2209 loads but I still need to verify the chrono by measuring real drop vs predicted drop at longer range. Thx again for all the help. Ross

I reckon you'll find your chrony is slow. Gunwerks have a good free ballistics solver/truer on their website that you can use to true velocity

Thx. Had a look at gunwerks. That will be a big help!