It might be worth OPs time to take a look over on Wyatt's Web Site.
https://wyattsoutdoor.com/product/long-action-prc-kit/While the link above references the PRC in a LA, the same principal holes true to with the 6.5-284 in a LA. Years ago when I built my first 6.5-284 on a LA, I tweaked the mag spring and position similar to what Wyatt suggests.
