Lipsey's Ruger Blackhawk 10MM: 135gr Chronograph Test: Part1

[mr.revolverguy]

https://www.youtube.com/watch?v=HlueGV10C9g

I split the video up into 3 segments and this is part 1

Chronograph Testing
Ammunition 135gr Nosler
Chronograph 3-5 Yards Downrange
Pistols:
Para Elite Hunter 10MM - 6in Barrel
S&W 610 10MM - 3 7/8in Barrel
Ruger Blackhawk 10MM - 6in Barrel

Chronograph Data
Para Elite Hunter
Hi = 1546
Low = 1503
Average = 1527
ES = 43
SD = 20

S&W 610
Hi = 1439
Low = 1179 Not sure what happened here, I feel like this was a misread by the chronograph. The round felt like all the others.
Average 1377
ES = 260
SD = 98

S&W 610 Remove the low shot
Average = 1417

Ruger Blackhawk
Hi = 1608
Low = 1527
Average = 1559
ES = 81
SD = 34

If nothing more this data tells me maybe my Hornady LnL AP Powder measure is not as consistent as I would like for it to be, though good enough for my range time. There is a reason I still load all of my rifle data on a single stage and trickling my final load.

Ruger Blackhawk 1559fps, Para Elite Hunter 1527fps, *S&W 610 1417fps.
I measured the cylinder gap of the revolvers by hold the cylinder to the rear of the frame as tight as I could get it. I am amazed at the tight fit of the Ruger Blackhawk.

Ruger Blackhawk Cylinder Gap .0025  -- .003 would not fit
S&W 610 Cylinder Gap .005 -- .006 would not fit

* S&W 610 Denotes Error correction by eliminating extreme low shot.
The loads you see mentioned in the video were safe in all pistols displayed, but it is recommended that you start 3-5% lower and work your way up to be safe.
My everyday range load will be aimed at 1400FPS.




Stay tuned for part 2 with the 175gr loads.

[Ramjet]

How are measuring the barrels?

Give us the barrel measurement from the where the primer is struck to the end of the muzzle.

[sqlbullet]

I am sure he is using the mfg published values.  For revolvers add 1.75" to get to the breech face.

[mr.revolverguy]

I hope this is not some wild prank for you guys trying to see how hard you can make me work

[Ramjet]

Auto vs Blackhawk = + 2" of bbl for the single action revolver.

the rule of thumb is 50 FPS per inch. Not scientific but one of urban legend rule of thumb based on some testing.

But loss due to gap seems significant to me.

Blackhawk has more bbl still only has slight advantage over the Auto.

All good stuff thanks for posting.

[mr.revolverguy]

Ramjet,

Before jumping to that conclusion you may want to see the next video with 175gr SWC

I am sure it will spark a lot of conversation.

[Ramjet]

No conclusion as much as observation and deduction based on personal expereince Lang with your data.