Chronographed the .32-20

Today I took the M-1905 Military & Police .32-20 to the range and ran a couple different loads over my Garmin Xero C1 chronograph.

First up were 10 of the rounds I loaded last week with an antique Ideal tong tool. These had a 107 grain RNFP bullet over 3.85 grains of Unique.

Next were 10 rounds from a box of HSM .32-20 cowboy action shooting ammo, which have a 115 grain RNFP bullet that's rated at 850 FPS, though HSM doesn't specify on the box or their website from what barrel length. I suspect it's from a rifle or at least a 7.5" revolver.

When I've chronographed this gun before it's been on the slow side. After I got home and cleaned it I measured the barrel/cylinder gap for each chamber using feeler gauges. They ranged from .003" to .008", so the gaps are in spec.

I need to measure the cylinder throats. I have a feeling they're a bit large and that's why the muzzle velocities I'm seeing are slower than load data suggests.