Yes it can.
I own a howa 1500 6.5 cm. This stock fits and 6.5 cm rounds cycles well, however I have not taken it out to the range yet.
ProMag states their Archangel 1500 Precision Stock uses a Free float barrel channel that accepts most barrel contours. However, they do not provide any further information regarding compatible barrel diameters. For more specific information, I would recommend contacting them directly.
The ProMag Archangel 1500 Precision Stock for the Weatherby Vanguard/Howa 1500 will fit a Howa 1500 in .308.
Pro Mag does not state if these stocks are compatible with the 7.62x39 chambered rifles. I recommend contacting ProMag about compatibility of the ProMag Archangel 1500 Precision Stock for the Weatherby Vanguard/Howa 1500 with the Howa 1500 in 7.62x39. The stock at the link below will work with a Howa 1500 in 7.62x39 using the factory magazines.
https://www.opticsplanet.com/trybe-defense-rifle-chassis-system.html
Yes it will.
Yes it will fit.
Yes. The ProMag Archangel 1500 Precision Stock is designed for short action Howa 1500 rifles, like yours, and includes a short action based magazine that is compatible with calibers such as .308 / 7.62 x 51 / .243 WIN / 7mm-08.
Yes, this should fit a heavy barreled .308 Howa 1500, Weatherby Vanguard or Smith & Wesson.
Yes, this should fit your 22-250 Howa 1500.