Hey gents....I built a 6.5-284 on a 110 side bolt release. Shoots fairly well (3/4 Moa, I think it should be better)

Devcon bedded Hogue stock
CBI varmint 26" barrel
Rifle basix trigger (1.5#)
leupold VX-3 6.5-20x50 LR
Lapua brass

I've been working up loads with Nosler 142 ABLR

so with no pressure signs or hard bolt lift, the bolt still sticks at the top of the stroke a bit. Like the last 1/8" of up throw kinda pops up. Needing more force to lift bolt. Then the bolt slides back and ejects just fine. Curious what this might be...??? It does this randomly with any bullet...

Thanks for any input.