paul105
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Post by paul105 on Feb 18, 2023 18:35:29 GMT -5
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Post by bigbore5 on Feb 18, 2023 21:44:26 GMT -5
I can't view them through the link
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paul105
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Post by paul105 on Feb 18, 2023 22:40:05 GMT -5
Bill, First, let me say I have no hearing in my right ear and hearing in my left is challenged. I double up with plugs and muffs to protect what little is left. So, muzzle blast doesn’t really bother me. I don’t shoot at night either, so muzzle flash isn’t a consideration in my selection of powders. I’m pretty sure that it has been proven that the slower powders (H110, 2400, etc.) will give the maximum performance velocity wise in magnum cases even in short barrels although blast and flash seems to be the downside. Here’s some chrono data I’ve accumulated over time (different bbl lengths including 1 7/8” snubbies). Fastest I’ve used for upper end oads is blue dot and that only in the 357 Mag, so this data may not provide you with the insight you are seeking.
Beartooth 185gr LFNGC New WW Cases Fed 200 Mag 14.7gr Lil'Gun 1.595 OAL Chron 4 Paces fr Muzzle Temp 75 Deg Marlin 18" 1,713 Ruger BH 6.5" 1,388 Ruger SP101 3" 1,161 S&W M60 3" 1,175 S&W M360 Ti 1.875" 1,023 S&W M340 Ti 1.875" 1,007
========================================= Marlin 18" ,158 gr LRNFP, 9.6gr Blue Dot, 1482.5 fps Marlin 18" ,158 gr RJHP, 9.6gr Blue Dot, 1405.5 fps Ruger BH 6.5" ,158 gr LRNFP, 9.6gr Blue Dot, 1272.5 fps Ruger BH 6.5" ,158 gr RJHP, 9.6gr Blue Dot, 1225 fps Ruger SP101 3" ,158 gr LRNFP, 9.6gr Blue Dot, 1171 S&W M60 3" ,158 gr LRNFP, 9.6gr Blue Dot, 1166 Ruger SP101 3" ,158 gr RJHP, 9.6gr Blue Dot, 1139.5 fps S&W M60 3" ,158 gr RJHP, 9.6gr Blue Dot, 1129 fps S&W M360 Ti 1.9" ,158 gr LRNFP, 9.6gr Blue Dot, 1019.5 fps S&W M360 Ti 1.9" ,158 gr RJHP, 9.6gr Blue Dot, 945.5 fps
============================================ S&W M340 Ti 1.9", 130 Hydra-Shok, Fed Fact, Fed cases, Fed primers, .357 Mag, Fed Fact, 1159 fps 158 CSWC, Add, Mixed cases, Std primers, 13.5, H-2400, 1075 fps 158 JHP - XTP, Horn, Mixed cases, Std primers, 13.5, H-2400, 1009 fps 158 LSWC, Rim Rock, Starline cases, CCI Std primers, 12.7, H-2400, 967 fps 185 LFNGC, Beartooth, WW cases, Fed 200 Mag primers, 14.7, Lil'Gun, 1006.5 fps 180 LWFN LBT, Fed Fact, Fed cases, Fed primers, .357 Mag, Fed Fact, 905 fps 158 LSWHP, Rem Fact +P, RP cases, RP primers, .38 Spec, Rem Fact, 753 fps 130 Fed Am Eagle, Fed Fact, Fed cases, Fed primers, .38 Spec, Am Eagle, 680 fps 158 LRNFP, Meister, Mixed cases, Fed 100 primers, 9.6, Blue Dot, 1020 fps 158 JHP, Remington, Mixed cases, Fed 100 primers, 9.6, Blue Dot, 946 fps
====================================================== Labradar Muzzle Velocity (familiarization run) 60 Deg F S&W M66-8 2.75" .357 Mag
130gr Fed Hydra-Shok JHP "Personal Defense" PD357HS2 H …….. 1,416 fps avg (84 fps ES) -- two rounds 140gr Underwood Xtreme Penetrator (Philips head mono metal).. 1,422 fps avg ( 5 fps ES) -- two rounds 158gr Horn Xtp - 15.0gr A2400 Std small pistol, new Starline...… 1,316 fps avg (49 fps ES) -- six rounds 165gr CSWCGC (358156) - 13.0gr A2400 New Starline ...… 1,070 fps avg (49 fps ES) -- six rounds 180gr Buff Bore …………………………………………………………………………….. 1,312 fps avg ( 6 fps ES) -- two rounds 185gr LFNGC (Beartooth), 15.0gr Lil'Gun, CCI 400 New Starline.. 1,228 fps avg (14 fps ES) – two rounds 200gr WLNGC (leadheads), 13.4gr H110, Fed 205, New Starline.. 1,102 fps avg ( 4 fps ES) – two rounds 200gr WLNGC (leadheads), 14.4gr H110, Fed 205, New Starline.. 1,155 fps avg ( 2 fps ES) – two rounds (purported to be the “Doubletap” load info) 200gr WLNGC (leadheads) handload with Lil Gun ………………………. 1,266 fps avg ( 2 fps ES) -- two rounds Load data not given -- maybe too much of a good thing. Spent cases fell from chambers, and no obvious signs of over pressure. Recoil was heavy. Don't even know if this stabilizes. If even needed, I would limit useage of the 180, 185, and 200gr loads in J & K Frame guns
Also ran two Buff Bore 180s thru 16" Rossi M92 carbine ……………. 1,894 fps avg ( 6 fps ES) -- two rounds
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paul105
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Post by paul105 on Feb 18, 2023 22:45:12 GMT -5
test Let me know if you can view the iphone videos I can't view them through the link It might work if you copy the link and paste it to the url line in a new page
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Post by hounddogman on Feb 19, 2023 15:41:39 GMT -5
Heavy 38 special +P+ and 357 loads using rimrock 170 gr. Keith bullet. 15 grains H110 with bullets deep seated in mag brass. This is the max load in the lyman manual. 2.5" barrel average 1188 fps. 4 5/8" barrel average 1346 fps. 18 1/2" barrel 1711 fps. The following are not book loads but safe in my guns, work up your own blah blah 😀. 8.2 grains longshot with bullets full length in mag brass. 2 1/2" barrel 1140 fps. 4 5/8" barrel 1274 fps. 6.5 grains longshot in 38 brass. 2 1/4" barrel 1010 fps. 2 1/2" barrel 971 fps. 4 " barrel 1058 fps. 18 1/2" barrel 1377 fps. 6 grains unique in 38 spl. brass. 2 1/4" barrel 1000 fps. 2 1/2" barrel 979 fps. 4 " barrel 1030 fps. 18 1/2" barrel 1241 fps. Couple of thoughts. The 2 1/4" 38 special sp101 is consistently faster than the 2 1/2" 357 gp100 and only shoots to point of aim with heavy bullets hence most this data. The 2 loads in 38 brass are very easy to shoot in K frame and larger guns . The 8.2 grains of longshot is pretty potent from the 2 1/2" barrel but downright pleasant compared to H110. Less noise, muzzle blast and recoil and only 40 fps less. Thanks for that excellent info! What’s the difference in muzzle blast like in the 2.5” gunbetween that 1188fps load with 15gr H110 and the 1140fps load with 8.2gr Longshot. I know there’s no exact answer and every shooter tolerates blast differently. Just curious on your take. How much more “work” is it to shoot the ~50fps faster load? Longshot vs H110. So I tried a decibel meter on a tablet and got some questionable results. Every shot recorded very low decibels but was consistent. The 8.2 grains of longshot read 4 db. louder than a standard 38 special load and the H110 was 4 db. louder than the longshot. To say that longshot falls between the two does not feel accurate, more like about 80 percent of the H110 if that makes sense. I have a friend and neighbor that is a retired cop and shooting instructor that we get to gather once a month and do some short combat courses. I've used the longshot load for this a couple of times, 20 to 30 rounds at a time without discomfort. I'm a carpenter and my hands are pretty hardened to impacts [ recoil [ but I don't like muzzle blast. I sold my 454 because of muzzle blast. Some of the retired officers that I shoot with expect a snub nose 357 to have set your hair on fire muzzle flash and these heavy bullet longshot loads don't quite do that.
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Post by hounddogman on Feb 19, 2023 16:04:42 GMT -5
Heavy 38 special +P+ and 357 loads using rimrock 170 gr. Keith bullet. 15 grains H110 with bullets deep seated in mag brass. This is the max load in the lyman manual. 2.5" barrel average 1188 fps. 4 5/8" barrel average 1346 fps. 18 1/2" barrel 1711 fps. The following are not book loads but safe in my guns, work up your own blah blah 😀. 8.2 grains longshot with bullets full length in mag brass. 2 1/2" barrel 1140 fps. 4 5/8" barrel 1274 fps. 6.5 grains longshot in 38 brass. 2 1/4" barrel 1010 fps. 2 1/2" barrel 971 fps. 4 " barrel 1058 fps. 18 1/2" barrel 1377 fps. 6 grains unique in 38 spl. brass. 2 1/4" barrel 1000 fps. 2 1/2" barrel 979 fps. 4 " barrel 1030 fps. 18 1/2" barrel 1241 fps. Couple of thoughts. The 2 1/4" 38 special sp101 is consistently faster than the 2 1/2" 357 gp100 and only shoots to point of aim with heavy bullets hence most this data. The 2 loads in 38 brass are very easy to shoot in K frame and larger guns . The 8.2 grains of longshot is pretty potent from the 2 1/2" barrel but downright pleasant compared to H110. Less noise, muzzle blast and recoil and only 40 fps less. This is an excellent post. I have a couple of questions if you would allow me: Was the 170 Keith used for all this data? If so, are you using a plain base or gas check bullet? Is your bullet conventionally cast and lubricated or powder coated? For you guys who might not be aware, Frank and company at Rimrock offer custom sizing. I measured 5 Smith and Wesson.357’s for a shooting buddy yesterday and the throats were very consistent at .3575” which is a bit smaller than my typical Ruger. Yes sir, all these loads are with rimrocks 170 Keith plain base bullet sized at .358. Unfortunately I have not started casting myself yet. Does anyone know a source for coated flat base bullets? Rimrock and GT have excellent flat base bullets and Missouri and bayou have coated beveled base but I cannot find a flat base coated bullet. And I checked one of my smiths, a 13-3 using jacketed bullets because I do not have pin gauges and a .357 slips through easily but. 358 does not. What diameter bullet be recommend?
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