In order to participate in the GunBroker Member forums, you must be logged in with your GunBroker.com account. Click the sign-in button at the top right of the forums page to get connected.
Question on Neck Sizing
dcloco
Member Posts: 2,967
Reloading for a 223 single shot, I loaded four groups of five rounds with 69 gr HPBT & four groups of five rounds of 40 gr BT's.
Necksizing allowed the 69 gr bullets to group nicely, compared to three other sets of full length sizing dies.
The 40 gr BT's liked two of the full length sizing dies.
Has anybody conducted similar testing?
Necksizing allowed the 69 gr bullets to group nicely, compared to three other sets of full length sizing dies.
The 40 gr BT's liked two of the full length sizing dies.
Has anybody conducted similar testing?
Comments
What's your overall length on the heavies?
What rate of twist in your single shot?
Were these the first time these cases were loaded?
If you're shooting a Contender; you need only neck size and set the length to about 0.006" off the lands, case length is crucial as is a nice light crimp.
So, I'm guessing you ran four separate series of 5 rounds with the same components through four separate sets of dies, with some of them being full-length dies set to full-length resize, and others set to only size the necks of loads, with 2 separate weight bullets, and want to know about full-length resizing versus neck only sizing? Yes
What's your overall length on the heavies? Measured each bullet with a Stoney Point gauge, set 0.020 off the lands
What rate of twist in your single shot? 1:9
Were these the first time these cases were loaded? No, fired from this rifle
If you're shooting a Contender; you need only neck size and set the length to about 0.006" off the lands, case length is crucial as is a nice light crimp.
Rifle is a Savage model 12, large ring, bull barrel, single shot (no magazine).