jwp475
.375 Atomic
Posts: 1,101
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Post by jwp475 on Oct 5, 2023 17:59:38 GMT -5
Anyone willing to shared load data? I'm interested in data for the 194 grain Bradshaw/Martin powder coated bullet.
Or any data with a 180 t0 200 grain bullet
Thanks in advance
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Post by Encore64 on Oct 5, 2023 18:01:29 GMT -5
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Post by bigbrowndog on Oct 5, 2023 19:12:31 GMT -5
I am skeptic of the wide disparity in reported velocities some get. I know that chrono readings need to be taken under specific conditions in order to get accurate readings. Using natural light from a directed position like the sun can and will affect recorded velocities, making them appear faster than actual velocities. Even when using occluded sky screens, the angular light from a directed source alters velocity. So I wonder if some of these readings are being taken under similar conditions.
Sources I feel that are providing accurate velocity reports claim 1400-1600fps from revolvers. When using what seems to be the most commonly used load of 18-20gr. of 4227 with a 180-200gr. bullet.
Just my thoughts and observances,……YMMV.
Trapr
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Post by Lee Martin on Oct 5, 2023 19:58:35 GMT -5
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jwp475
.375 Atomic
Posts: 1,101
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Post by jwp475 on Oct 5, 2023 20:20:57 GMT -5
Thanks, Lee
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jwp475
.375 Atomic
Posts: 1,101
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Post by jwp475 on Oct 5, 2023 20:27:50 GMT -5
I thinking about not only using this bullet in the Dan Wesson M40 357 Maximum, but also trying in in my 35 Whelen |
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jwp475
.375 Atomic
Posts: 1,101
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Post by jwp475 on Oct 8, 2023 19:42:22 GMT -5
The 357 Maximum was produced for IHMSA and was excellent for that sport.
I think that handgun hunters have missed the boat fir hunting deer or even elk. The cartridge is capable of pushing the 194 grain Bradshaw/Martin powder coated and gas checked as fast as 1796 to 1799 FPS. . The same for the powder coated 200 grain LBT hollow point.
I'm purchasing 200 ea. from Sixshot as he graciously consented to make me some.
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Post by kevshell on Oct 8, 2023 23:28:59 GMT -5
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Post by bradshaw on Oct 11, 2023 10:25:37 GMT -5
The 357 Maximum was produced for IHMSA and was excellent for that sport. I think that handgun hunters have missed the boat fir hunting deer or even elk. The cartridge is capable of pushing the 194 grain Bradshaw/Martin powder coated and gas checked as fast as 1796 to 1799 FPS. . The same for the powder coated 200 grain LBT hollow point. I'm purchasing 200 ea. from Sixshot as he graciously consented to make me some. ***** John Parker and Dick Thompson.... yes, a short 11-degree inluded-angle forcing cone. Bill Ruger, Jr., wanted a 5-degree cone, which should work fine----proving it’s not cut too deep. In manufacturing, a 5-degree forcing cone will be cut deeper (than I would accept) to equal the root diameter of a proper, short 11-degree cone. The root diameter of a forcing cone must accommodate chamber-to-bore misalignment; otherwise, spitting results. (Even with excellent chamber-to-bore alignment, spitting can be caused, also, by rough edges, rough exit holes, or a rough forcing cone.) Stainless vs carbon steelFor its better abrasion resistance, stainless is the natural material for a new .357 Maximum. While shooting select fire Mini 14’s with Bill Ruger, Jr., it was my observation that the KAC 556 (stainless Mini) heated more slowly than the AC 556 (chromoly Mini). The stainless machine gun also took longer to cool down. Bill, Jr., gave me the physics explanation, which I won’t try to repeat. Long vs short cylinderThanks to combustion & pressure dynamics, barrel face erosion procedes more slowly with a long cylinder. Bill Ruger and Bill, Jr., were ready to make stretch the frame of the SRM prototypes. Bill, Jr., wanted to try a 1.660-inch case (.357 Maximum case is 1.605”). My fear was the bottom strap of the frame would taper to the point of weakness. Bill wasn’t about to change the angle of the bottom strap to a slower taper. Nor did I see him straightening the bottom strap in front of the trigger guard----the path chosen by the Magnum Research BFR. A double action frame with swing-out cylinder faces no such impediment to cylinder length. The Dan Wesson Arms Model 44 .44 Mag was stretched to make the Model 40 .357 Maximum without need to taper or straighten the bottom strap. This instantly allows for a longer cylinder. My first observation of barrel face erosion vs cylinder length took place before handgun silhouette came about. The S&W Model 19 with long cylinder vs Model 28 with short cylinder: Given a voracious diet of mid-magnums, the M-28 barrel face showed more erosion. That the respective barrels are made of the same steel by the same drop forging process, presumably with the same heat treatment, validates comparison. I don’t know what steel and heat treatments barrel makers use. Suffice to say, Ruger barrels of 416 stainless resist barrel face erosion for a considerably longer period than 4140----the Ruger Super Blackhawk being the most volume-tested player on the firing line. David Bradshaw |
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jwp475
.375 Atomic
Posts: 1,101
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Post by jwp475 on Oct 20, 2023 14:05:14 GMT -5
Received 200 new StarLine cases today for the 357 Maximum
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