buffer weights

Can someone post what the different buffers weigh, from carbine to rifle and including the 9MM, H2 and H3?

Playing with a .223WSSM and knowing the weights would help a bunch.
Thank you.

Standard CAR 2.9 oz.
H buffer is 3.8 oz.
H2 buffer is 4.6 oz.
Rifle buffer is 5.17 oz.
9mm buffer is 5.5 oz.
H3 buffer is 5.6 oz.

There are some even heavier ones for 9mm and 45ACP that are 8oz and heavier.

MGI RRB(RateReducing/RecoilReducing Buffer) weighs 7.1 oz.

I dissasembled a buffer and took some tungsten bar stock and copied the weights inside, and got a 7oz buffer that works. it makes a difference in “felt” recoil. maybe I am nutz.

I am trying to get the whole buffer weight concept under control. Why does a rifle length gas system use a heavier buffer? I though it would use a lighter one since the longer gas system operates at a lower pressure than a carbine or middy length system.

You aren’t nuts it does feel softer because it’s cycling slower even though the amount moving mass is heavier. It’s like the difference of the slow heavy push of the recoil of the .45ACP vs the harder hit to your hands snap of the faster cycling 10mm. In my experience with proper stance and grip I get less muzzle flip with my Glock 21 (10mm) than I do with my Glock 21SF (45ACP), the 10mm cycles so fast that the muzzle doesn’t have as much time to lift as does the .45.

You’ll usually get more muzzle rise with a heavier buffer vs. a lighter buffer that cycles the rifle faster. This is why 3gun shooters run lightened carriers, regular spring rate buffer springs and CAR weight buffers. Less moving mass less recoil and muzzle lift.

It has a heavier buffer but a longer and lighter rate buffer spring.

Where did you get your tungsten bar stock? I have a supplier, but the price is pretty stout.