scooter89

I have been using my .357 for white tail for whats going to be my 3rd season this year. A friend of mine has always made up about 200 rounds of nearly max load 158 gr hornady xtps with HS6 powder. Now that i have begun reloading for myself i see there are powders that are capable of more speed at lower pressures, which to me translates into more energy, flatter trajectory, and less wear and tear on my gun. My lee load manual states that with H110 at 16.7 gr, i could push a hornady xtp 1591 fps, while i wouldnt go to max load, that figures up to roughly 890ft lbs at the muzzle. My question to you, are these velocities acheivable in a revolver with a 6 inch barrel or is this geard more towards the .357mag rifles? Your help is appreciated.

North country gal

I suspect it is rifle data, but your manual should list the gun being used to achieve those figures.

My Hornady manual shows 15.5 grains of H110 as a max load with the 158 XTP in a 16" Rossi lever gun. In that gun and load, it produces 1650 fps. The same load in an 8" Colt Python shows 1250 fps. My old Sierra manual shows 1200fps for 16.3 grains of H110 out of a 6" Colt Python with a 158 grain hollow point.

scooter89

I have read all over in my book. It doesnt tell whatthe test gun is anywhere i have looked

Sr40ken

here are some I found, plus go into the powder makers sites
/ Paucho has some load infor for lever guns to.

Taffin Tests Load Data

158 All140158170187 Sort by: Powder Velocity



357 Magnum, 158 gr
Bullet Powder Weight Powder Velocity
JFP 15.5 gr 2400 1,745 fps
Browning B92 Lever action, 20" barrel
Speer JFP
Dec 2004 GUNS
Primer: CCI


JFP 15.5 gr 2400 1,816 fps
Browning B92 Lever action, 20" barrel
Hornady JFP
Dec 2004 GUNS
Primer: CCI


LSWC 16.0 gr 2400 1,920 fps
Marlin 1894C Lever action, 18.5" barrel. 3/4" @ 50 yards
Lyman 358156GC
Dec 2004 GUNS
Primer: CCI


LSWC 15.0 gr 2400 1,834 fps
Marlin 1894C Lever action, 18.5" barrel
BRP 155 SWCGC
Dec 2004 GUNS
Primer: CCI


XTP 14.0 gr 2400 1,677 fps
Marlin 1894C Lever action, 18.5" barrel
Hornady XTP
Dec 2004 GUNS
Primer: CCI


JFP 15.5 gr 2400 1,742 fps
Marlin 1894C Lever action, 18.5" barrel. 3/4" @ 50 yards
Speer JFP
Dec 2004 GUNS
Primer: CCI


LSWC 14.0 gr AA #9 1,744 fps
Marlin 1894C Lever action, 18.5" barrel
Lyman 358156GC
Dec 2004 GUNS
Primer: CCI


JHC 13.0 gr Enforcer 1,688 fps
Marlin 1894C Lever action, 18.5" barrel
Sierra JHC
Dec 2004 GUNS
Primer: CCI


LSWC 14.5 gr H4227 1,588 fps
Marlin 1894C Lever action, 18.5" barrel
Lyman 358156GC
Dec 2004 GUNS
Primer: CCI


XTP 18.0 gr Lil’Gun 1,828 fps
Marlin 1894C Lever action, 18.5" barrel. 3/4" @ 50 yards
Hornady XTP
Dec 2004 GUNS
Primer: CCI


GDHP 18.0 gr Lil’Gun 1,845 fps
Marlin 1894C Lever action, 18.5" barrel
Speer Gold Dot HP
Dec 2004 GUNS
Primer: CCI


JFP 17.5 gr Win 296 1,802 fps
Browning B92 Lever action, 20" barrel
Hornady JFP
Dec 2004 GUNS
Primer: CCI


LSWC 13.0 gr Win 296 1,469 fps
Marlin 1894C Lever action, 18.5" barrel
BRP 155 SWCGC
Dec 2004 GUNS
Primer: CCI


XTP 17.5 gr Win 296 1,858 fps
Marlin 1894C Lever action, 18.5" barrel
Hornady XTP
Dec 2004 GUNS
Primer: CCI

Nick0410

Alliant powder is giving a load that reaches 1,686 out of a 10 in revolver, 158gr so you can probably get a good 1400-1500 out of a 6in but I cannot find the burn rate on this 300-mp. I think 1200-1300 is more reasonable, 158 is a heavy bullet.

Sr40ken

from Alliant out of 10" barrel
1.575

10

CCI 500

Unique

7.7

1,040

View this recipe



1.575

10

CCI 500

Power Pistol

8.5

1,078

View this recipe



1.575

10

CCI 500

Blue Dot

10.2

1,188

View this recipe



1.575

10

CCI 500

2400

14.8

1,265

View this recipe



1.575

10

Fed 100

300-MP

18.6

1,686

View this recipe

Ssg Bailey

My 7th edition of hornady reloading says that afor 158-160 gr HP-TXPs useing H 110 powder max load is 15.6 grs will give you 1250 fps for a 357 mag and 15.2 will give you 1200 fps hope this helps you out if you go to hornady's web sites you can get the min and max load data for all of there rounds

rclark

Sounds like fun to dig out the chronograph and test some loads .

forty5

The 16.7 grs H110 load with 158 gr Hornady XTP at 1591 FPS was probably taken from the Hodgdon Loading manual. That is thier max load and that velocity was obtained with a 10 inch barrel.

Iowegan

Confusion continues after SAAMI lowered 357 Mag max chamber pressure back in 1995. The older data is rated in CUP where the max chamber pressure was listed at 46,000 CUP. The new SAAMI standard is 35,000 psi. The max load of H-110 with a 158 gr bullet is now 15.5 gr. The old data can be as high as 17.8 gr of H-110. Your choice ... but in my opinion, the new pressure standard is plenty hot for a 357 Mag plus it extends the life of the gun by a huge amount.

K57

Iowegan makes a very good point and I wouldn't shoot a great deal of full power loads. Up until recently Accurate Arms listed data for the .357 magnum that went up to about 43,000 CUP. When it comes to hunting with a .357 Magnum, I would want all of the energy and momentum I could safely use and wouldn't use a bullet lighter than 158 grs. There is still a source for the warmer loads that go up to over 40,000 CUP and that is the Lyman Pistol & Revolver III reloading manual. Keep in mind that you want to begin with the Start Charge and carefully load up to the Max Charge. Load 6-10 rounds at intervals of .2 grains until you find the best accuracy with enough velocity for hunting.

Keeping longevity of your revolver in mind, I would load just enough of the loads at near max, or the max load (if accurate) for your hunting needs and would not use them continually.

Sr40ken

Very true. And with the newer powders in my opinion if you need more power get a bigger gun.
I am real anxious to see how the MP300 runs in the rifle.

scooter89

I do not intend to load to max spec, but accuracy permitting i would like to have a little more behind my bullet when its going through an animal of that size. After this year i will probably be looking for a bigger gun, but in 2 seasons ive gotten 4 deer and have had to do very little tracking.

Sr40ken

I think with some of the modern powders you should get 18-1900 fps without pushing the pressure envelope. Plenty to take down a midwest whitetail. Some of the Buffalo Bore stuff is equalling .30-30 and plenty of vinison has been put on the table with those.

scooter89

Well this will probably be the last year for the taurus revolver anyhow. This spring i there will probably be a ruger 44 mag following me home.