airlite magnum snubby - chronographed

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thomis

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Hello friends. A little while ago I posted a pic in the general gun discussion forum. The pic showed two of my carry pieces, a Ruger SR40c and a Smith & Wesson 340 PD .357. The whole intention was just for fun but I erroneously quoted velocity of the .357. What I quoted was an approximate velocity from a favorite recipe out of my Lyman Pistol and Revolver manual, (though mine is the 2nd edition).

The purpose of these trials was to find a full house load that clocked potent velocity from a less than 2" bbl, and I could still keep on paper at 10 yards. It was actually closer to 9 yards. I still need to tweak a few of the loads for accuracy. Regardless, you may or may not find it interesting. I wish I had someone to help me film to zoom in on the chronograph. Youtube shrinks the videos so much you can't read the digits (sometimes you can, if you double click the video and make it full screen).

I have to be honest, I didn't think Blue Dot would take the cake in the velocity arena. Mag primers were only used with the H110 and True Blue powders. Standard primers were used everywhere else, including the screaming hot Blue Dot loads. All brass was brand new Winchester brass. All primers were CCI. The 158 grain hard cast were from Missouri Bullet Company. The other two bullets used were 140 grain jacketed Speer Unicore HP and Hornady XTP's. All loads had a heavy crimp so as to not unseat a bullet under recoil, also to achieve the highest velocity.

No bones in my hand, wrist or arms were fractured.

Hope you enjoy.

Part I

Part II

Part III

Part IV

Part V

I have to warn you the Ruger SR40c video is terrible, I was fumbling too much. I'm working on some better handloads for that gun, waiting on components to come...

couple fotos just for fun.

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The set-up

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^
For true. thomis, that's way cool and way beyond the call o duty (video proof) but perhaps a text breakdown would be great.
 
I only watched the first video, But I would still carry the smith since you have it. Might even tone it down and just load some 38's for it. I carry a 329PD once in a while and when I do carry it around town I have some 240 grain home cast bullets that only move about 800fps, so its roughly equivalent to an average 45 load. When I carry for hunting (main reason for the gun) I load some pretty hot 270 grain home cast bullets for it.

The thing about the air weight guns that most people don't think about before they buy them, and kinda why I think they have a bad rap; is that they are not range toys, they were meant for a specific purpose, and when used as they were intended they work really well.
 
My exclusive powder for all my .357's is H110 / 296. In all honesty, my snubs will average in the upper 1400's fps with 19.5 - 20.0 grains under a 125 gr. XTP.

Jacketed 158's are averaging in the 1300's with 17.5 grs. H110 / 296, CCI 550 primers and mixed brass. Model 66's -2 and -5 with 2" barrels. My longer barreled wheel guns will drive the velocity up about 100 fps with those same loads.

But I wouldn't personally push a non jacketed bullet that hard. Most of the fractured forcing cones S&W has encountered were thought to be the result of lead build up rasing pressures in the cone, not the 125 gr. JHP / H110 loads as often blamed for the damage. I've been shooting gobbs of 125 gr. JHP's through my K frames for decades with H110 / 296 and have yet to experience any sign of forcing cone stress fractures.

GS
 
the chrony is too close to the pistol. probably getting powder blast readings.

murf
 
"1500 fps from a 1 7/8" barrel with a 140 jhp seems quite excessive to me."

definitely not for wimps. in the right hands, very controllable.

murf, that chrony was reading pretty consistent numbers, unlike muzzle blast readings.
 
Gamestalker, I had different results with my 2 1/2" model 66. I managed to crack the forcing cone with about 350 rounds of Remington 125 jhp about 30 years ago. S & W replaced the barrel, cylinder and other parts as well. The fact that they fixed it on their dime told me I wasn't the only one too.
 
Nice work Thomis :D ,
I had good results with BlueDot in a 4" Colt Trooper and a 2.75" Ruger Security Six with 158 and 180gr jacketed bullets, more so with the 180's
I've been using AA#9 for 357 Mag with excellent results for jacketed, lead GC and hard cast 18 bhn, I do prefer 2400 for lead though.
I do like the 170gr Keith type SWC's for a outback load.
 
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