I have an Air Arms .22 PCP rifle. It will shoot 1/2 moa @ 50 m with my Leupold rimfire scope.
I get about 50 shots off of a charge from a 20 l cylinder.
They have really good triggers and accuracy that will compete with your centre fire rifles at shorter ranges (up to 50 m).
I hunt everything with a TSX 270 gr.
Hand loads with Varget give me 2611 FPS with 4087 ftlbs energy. They are very accurate in my CZ 550 and recoil is very manageable for a quick second shot.
The 270 gr TSX expands perfectly at these velocities (Limpopo hunting so inside 200 m) and does very...
I have shot a .458 express and .458 Lott in addition to my .375 H&H. All of them were big guns, CZ 550 with American stocks and although the .458 recoiled more than the .375 I experience them to be very similar. A hard, slow push that rocks me back with no pain.
My short barrel Ruger #1 in 7mm...
I use 270 gr TSX out of my .375 @ 2500 FPS for everything from impala to eland.
Always had textbook performance at Bushveld distances, 50 - 150 m.
Very good penetration and expansion on Wildebeest and eland at those ranges.
I have never hunted buffalo but will use the 270 TSX when I do.
I have a CZ 550 in .308 and a CZ .223 that worked flawlessly out the box. Extremely accurate and reliable. My CZ 550 in .375 had feeding problems which a bit of polishing solved.
How many CZ rifles have you owned and struggled with?
Sectional Density = Bullet Weight (Grains) divided by 7000 (grains in a pound) then divided by squared diameter.
This is the only math that matters in sectional density.
The heavier the bullet the greater the sectional density for a given diameter. Length only comes into play because heavier...