The advantages of using a Small Rifles Primers over the standard large rifle version are twofold. Using the smaller, less aggressive cap can result in better consistency, particularly in tighter standard deviations.

What size is a small rifle primer?

There is a size for small pistol and rifle primers, which is .175″ in diameter, and large or rifle size primers, which is .210″ in diameter. Therefore, small rifle magnum primers will have the same diameter as standard small rifle primers. The function will be the same no matter what type of primer you are using.

What is the difference between large and small primers?

It is conclusive that great primers give more speed with all powders tested, especially slower ones like Herco. This is because the large pistol primer has a stronger ignition on the powder charge.

What are 41 small rifle primers?

Winchester #41 Small Rifle Primers for 5.56mm are NATO Spec Military Primers that are the same as those found on Lake City 5.56 ammo. Get consistency from shot to shot. These primers’ consistency and temperature sensitivity are rigorously tested under conditions well beyond the range encountered with normal use.