A frustrating day at the range

[vintage hunter]

Took the '44 BSA No. T out for a spin today, first time since last December when I shot the doe in the 1st photo. I currently have it zeroed for HXP and wanted to see if any of the hunting loads I had on hand would shoot to the same POA, or at least reasonably close.
I took along some factory Winchester 180gr PP, PRVI 180gr BTSP, hand loads with 180gr Sierra Pro Hunters, Hornady 174gr RNFB, Hornady 174gr HPBT Match bullets and a few rounds of HXP.
Don't know if I'm that rusty or was just having an off day because I couldn't shoot a descent group to save my arse, even with ammo the rifle's shown a preference for in the past, like the HXP. It will normally do close to 1m.o.a. with the HXP's and 1 or less with the BTHP match loads @ 100yds.
Anywho, as it turned out the Winchester's and the Sierra hand loads shot to same POA at 100yds as the HXP's although the groups were a bit larger that I like for hunting. Speaking of which, deer season opens bright and early this coming Saturday morning so I hope I get back into it with the T by then and get the group size down to where I like it.
The 1st target with the one aiming point is a bit of a conundrum with the color coded groups, maybe yall can figure it out.

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