Guns can be finicky. Even if you buy two brand X guns, in the same x caliber, they more than likely will like different brands of ammo. Or maybe the same brand, but different bullet weights.

I had a Browning A-Bolt .270 that would shoot 3/4" groups at 100 yards with either Remington Core-Lokts or Federal Premium, 130 grain only. Didn' t like the 150 grainers. With handloads, it would shoot 1/2" groups all day. Put any type Winchester ammo in it, and it wouldn' t shoot less than 8" groups. It did' t like Remington Premier ammo either.

I also had a Remington 700BDLSSDM that didn' t like anything I shot thru it. 1.5" groups was the best I could get. I sold it off real fast.

Next rifle I had was a Browning White Gold Medallion in .300 Win Mag. It liked Hornady 150 grain SST' s, but not much else.

So when I buy a new rifle, I try to budget in another 100.00 just for ammo.