Loads for 284 Win - Sticky???

[81STFACP]

With the 284 Winchester getting more following, how about use this for the drop zone for all your 284 loads.

I will start with my hunting rig:

Action: Remington, notched at the bottom to allow magasine feeding of longer ammo
Barrel: Remington Sendero contour cut back to 25, a 7-08 in previous life, re-chambered to 284 Winchester, hand lapped afterwards
Brake: Little Bastard
Scope: 5.5x22x56 NPR2 reticle
Stock: AICS, magasine front strap removed


Load
Brass: 284 Winchester, neck turned to .0125, flash holes cleaned up, primer pocket uniformed.
Powder: H4831SC
Charge: 55.0
Bullet: 140 Grain Berger Hunting VLD
COL: 2.94
Chrono: 2808 @ 15 feet
Density Altitude: -743
Grouping: Around half minute at 200 yards


Another Load
Brass: Norma 6.5x284 necked up to 7mm, neck turned to .0125, flash holes cleaned up, primer pocket uniformed
Powder: R-17
Charge: 53.5
Bullet: 140 Grain Berger Hunting VLD
COL: 2.94
Chrono: 3015 @ 15 feet
Density Altitude: -780
Grouping: Around a minute

Reloading dies - LEE. Why? Because these particular ones give me damn near zero run out on sizing and bullet seating using Froster Co-Ax. The neck tension was adjusted by neck turning.

 

[rmfield]

Re: Loads for 284 Win - Sticky???

I worked this up for a long action, 24" barreled, hunting rifle:

WW .284 Win brass, FL sized and trimmed with VLD chamfer
CCI BR2 primers
RE17 at 51 grains
OAL 3.100" (at the lands)
Berger 180 Hunting VLD

Standard Redding dies

2820 fps with ES at about 20-25
Accuracy runs consistently about .75 moa

51.5 grains showed early signs of pressure and 52 cause ejector smear and heavy bolt lift (too hot - ruined the primer pockets)

I tried Federal GM210m primers, but they increased both group size and ES, as well as slightly reduced velocity.

I tried jumping the bullets as suggested on Berger website and this also increased both group size and ES.

Custom, no-turn (.317") reamer with .110" lead and 1.5 degree throat. #5, 1:9, 5-groove Pac-Nor SS barrel.