New Reloader H110 357 Mag question.

buddyb · May 11, 2009, 07:51 PM

Can anyone tell me what I should expect for velocity from a 4" barrel 357 mag Taurus Tracker with ported barrel?

I just started reloading and I'm using the Lyman 47th reloading manual. It shows 13.7gr of H110 for 1087 fps as the starting load and 17.7gr at 1387 fps for maximum loads using 158gr JHP. Their test data shows a 4" barrel.

Well I started out with 15gr of H110 and my average of 5 shots were 1096 fps but I had a pretty good spread difference from 1115 to 1039. I went to 16gr and average was 1077 with hi 1144 and low 1056, then I went to 16.5 and had an average of 1082 with a spread of high 1144 and low 1056, then I went to 17 and had an average of 1077 with the high 1095 and the low 1059. At 17grains the spead was only 36 fps quite a lot better than the other loads, but this is way short of the 1387 stated in the reloading tables.

I'm using the Lee single stage reloading equipment and using the factory crimp die for crimping. I adjusted the crimp one full turn past where the die comes in contact with the cartridge as stated in the lee manual for a heavy crimp.

The COL is 1.580, winchester brass trimmed to 1.280, WSPM primers, and 158gr Speer JHP #4732 bullets. I'm using a Pro Chrono from cabelas to measure fps.

I wanted to get some input before going any higher with the loads. I know some of the other newer manuals shows 16.7gr of H110 to be max so I figured I better ask the advice of experienced reloaders. The brass doesn't show any signs of excessive pressure that I can tell.

buddyb

Al Norris · May 11, 2009, 09:57 PM

The one thing that is different is that in the Lyman test data, they are using a universal receiver. Whereas you were using an actual revolver. Your cylinder gap may be (and almost certainly is) different from theirs.

That's just one area of difference.

Your bore may well be different also... and the list goes on.

FYI, the Lyman's 48th lists 16.3gr of H110 (min) to shoot at 1178fps and 17.0gr (max) to be 1309fps. Thats' using a Hornady 158gr #35750 (XTP), and a CCI #350 primer.

Maligator · May 11, 2009, 10:25 PM

Quote:

FYI, the Lyman's 48th lists 16.3gr of H110 (min) to shoot at 1178fps and 17.0gr (max) to be 1309fps. Thats' using a Hornady 158gr #35750 (XTP), and a CCI #350 primer

For what it's worth the Lyman's 49th ed lists the exact same numbers so things haven't changed.

Crankylove · May 12, 2009, 12:17 AM

Using Hornady's 7th edition reloading manual, I have loaded a few rounds with H110 to what they say should be 1,500 fps. Thier load says 19.9 grains of H110 with a 125 grain XTP (this load is listed as a MAX load) should hit 1,500, from an 8" barrel. My GP-100 with a 4" unported barrel, shooting through a chronograph, showed 1,420 to 1,465 fps. There was some pretty substanial recoil, and the muzzle flash was HUGE (firing at night was awesome) but they were accurate, and showed no overpressure signs. I have no wish to load them again, it was more just to see how fast I could go, but I have really don't need a pistol load like that, thats what my .358 Win. is for

buddyb · May 12, 2009, 12:42 PM

Thanks everyone for your input.

buddyb

buddyb · May 17, 2009, 08:47 PM

Just thought I would give you an update. I was finally able to find some 357 ammo, its pretty scarce around here. Anyway, I test fired a 5 shot group to compare with my loads and it averaged 1043fps using 158gr JSP. Using that information I guess I wasn't far off with my loads. I'll be dropping down to 16.7gr of H110. Now I get to start with my 44mag. ;0)

Thanks again for your input.

buddyb

May 11, 2009, 07:51 PM	#1
buddyb Junior Member Join Date: May 10, 2009 Posts: 3	New Reloader H110 357 Mag question. Can anyone tell me what I should expect for velocity from a 4" barrel 357 mag Taurus Tracker with ported barrel? I just started reloading and I'm using the Lyman 47th reloading manual. It shows 13.7gr of H110 for 1087 fps as the starting load and 17.7gr at 1387 fps for maximum loads using 158gr JHP. Their test data shows a 4" barrel. Well I started out with 15gr of H110 and my average of 5 shots were 1096 fps but I had a pretty good spread difference from 1115 to 1039. I went to 16gr and average was 1077 with hi 1144 and low 1056, then I went to 16.5 and had an average of 1082 with a spread of high 1144 and low 1056, then I went to 17 and had an average of 1077 with the high 1095 and the low 1059. At 17grains the spead was only 36 fps quite a lot better than the other loads, but this is way short of the 1387 stated in the reloading tables. I'm using the Lee single stage reloading equipment and using the factory crimp die for crimping. I adjusted the crimp one full turn past where the die comes in contact with the cartridge as stated in the lee manual for a heavy crimp. The COL is 1.580, winchester brass trimmed to 1.280, WSPM primers, and 158gr Speer JHP #4732 bullets. I'm using a Pro Chrono from cabelas to measure fps. I wanted to get some input before going any higher with the loads. I know some of the other newer manuals shows 16.7gr of H110 to be max so I figured I better ask the advice of experienced reloaders. The brass doesn't show any signs of excessive pressure that I can tell. buddyb

May 11, 2009, 09:57 PM	#2
Al Norris Moderator Emeritus Join Date: June 29, 2000 Location: Rupert, Idaho Posts: 9,660	The one thing that is different is that in the Lyman test data, they are using a universal receiver. Whereas you were using an actual revolver. Your cylinder gap may be (and almost certainly is) different from theirs. That's just one area of difference. Your bore may well be different also... and the list goes on. FYI, the Lyman's 48th lists 16.3gr of H110 (min) to shoot at 1178fps and 17.0gr (max) to be 1309fps. Thats' using a Hornady 158gr #35750 (XTP), and a CCI #350 primer.

May 12, 2009, 12:17 AM	#4
Crankylove Senior Member Join Date: July 8, 2008 Location: 8B ID Posts: 1,753	Using Hornady's 7th edition reloading manual, I have loaded a few rounds with H110 to what they say should be 1,500 fps. Thier load says 19.9 grains of H110 with a 125 grain XTP (this load is listed as a MAX load) should hit 1,500, from an 8" barrel. My GP-100 with a 4" unported barrel, shooting through a chronograph, showed 1,420 to 1,465 fps. There was some pretty substanial recoil, and the muzzle flash was HUGE (firing at night was awesome) but they were accurate, and showed no overpressure signs. I have no wish to load them again, it was more just to see how fast I could go, but I have really don't need a pistol load like that, thats what my .358 Win. is for __________________ The answer to 1984 is 1776

May 12, 2009, 12:42 PM	#5
buddyb Junior Member Join Date: May 10, 2009 Posts: 3	Thanks everyone for your input. buddyb

May 17, 2009, 08:47 PM	#6
buddyb Junior Member Join Date: May 10, 2009 Posts: 3	Just thought I would give you an update. I was finally able to find some 357 ammo, its pretty scarce around here. Anyway, I test fired a 5 shot group to compare with my loads and it averaged 1043fps using 158gr JSP. Using that information I guess I wasn't far off with my loads. I'll be dropping down to 16.7gr of H110. Now I get to start with my 44mag. ;0) Thanks again for your input. buddyb