Different Brands With Same Grain = Different Recoil

[moxie]

Winchester White Box, generally considered entry-level or 'plinking' ammo, is often loaded mildly for the bullet weight. This is sufficient for the price point and little more.

In my chronograph testing, WWB consistently runs as fast or faster than many others. For example, three lots of standard WWB 115 gr. FMJ averaged 1156fps, 1227fps, and 1173fps out of a S&W M&P 9c. Rem 115 UMC was 1157, and Fed. Champion 115 FMJ was 1169.

 

[aurora40]

Actually, it's bullet mass and not weight if I remember correctly.

Unless you are using the bullets somewhere besides Earth, weight and mass can be used interchangeably for any practical purposes.

Then when the time comes for the Marketer's to tell the Production people just what velocity to claim for such and such load, the Ballisticans hope they don't go much over what their Bell Curve showed as "Mean". That 'means' that 50% of the velocities were higher and 50% lower. The Marketers will never use "Average" velocity as it is usually a lower figure than "Mean".

"Mean" and "Average" are synonymous. You are thinking of the "median" number.

I think people summed it up well, price, choice, etc, all factor in. Not everyone wants a full power load and not everyone wants a light target load. In semi-auto calibers you will find there is a tighter range of performance across brands, because they need to reliably cycle typical firearms. With revolvers, there is no such requirement.

The best way to gauge how a bullet performs is to buy a chronograph. The 2nd best way is probably to read other people's chronograph results? Even if their speeds won't be your speeds, their relative differences will likely be your relative differences.

If you state your preference, whether for stout stuff or mild stuff, I'm sure people can make some suggestions.