Savage writes, at http://www.savagearms.com/safety-notice/safety-notice-muzzleloader :


Safety Notice: Muzzleloader 10ML-II

As the new hunting season approaches, Savage Arms would like to remind 10ML-II muzzleloader owners to carefully follow the safe loading procedures as recommended in the manual. When loaded incorrectly, the barrel can become catastrophically damaged, creating the potential for serious injury. To avoid injury:

  1. Always ensure the barrel is empty before loading.

    • Insert your factory 10ML-II ramrod into the barrel until it rests on the breech plug. The end of the ramrod should be flush with the muzzle. If any part extends beyond the end of the barrel, DO NOT LOAD. Disassemble the muzzleloader and unload or clear the obstruction.

    • Always remove the primer, powder, and bullet before storing.

  2. Follow the exact load instructions in the manual or the approved new load data at http://www.savagearms.com/load-data

    • A replacement manual with load data can be found at http://www.savagearms.com/manuals/.

    • Never deviate from the load recommendations, including without limitation by using different powders, sabots, bullets, or more or less powder.

    • Measure smokeless powder charges by weight, not volume.

  3. If the bullet slips or feels loose at any point while loading, DO NOT USE.

    • Improper use or storage can result in bulges, cracks, or corrosion that causes the bullet to slip during loading. Use in this condition can result in a catastrophic failure.

  4. Firmly seat the bullet onto the powder charge.

    • Space between the powder and projectile will decrease accuracy and can increase pressures.

Savage Arms is the leader in accuracy, quality and value, and we are confident the 10ML-II is safe when used properly.



The problem is with the Savage “approved load data” at http://www.savagearms.com/load-data/ . It is a mess. This is what Savage publishes.


Load Data

Approved new load data for Muzzleloader 10ML II

Alliant Powder® Black MZ™

Primer

Sabot

Max Charge
(gr vol eq)

Velocity
(ft/sec)

Energy
(ft-lbs)

250 gr. Hornady SST (0.452")

Fed209A

MMP Black

100

2133

2523

300 gr. Hornady XTP (0.452")

Fed209A

MMP Black

80

1772

2090


Alliant Powder® Blue MZ™ Pellets

Primer

Sabot

Max Charge
(gr vol eq)

Velocity
(ft/sec)

Energy
(ft-lbs)

250 gr. Hornady SST (0.452")

Fed209A

MMP Black

150 (3 pellets)

2102

2450

300 gr. Hornady XTP (0.452")

Fed209A

MMP Black

150 (3 pellets)

1982

2614


Alliant Powder® 2400®

Primer

Sabot

Max Charge
(gr weight)

Velocity
(ft/sec)

Energy
(ft-lbs)

250 gr. Hornady XTP (0.452")

Fed209A

MMP Black

34.2

2133

2523

300 gr. Hornady XTP (0.452")

Fed209A

MMP Black

28.8

1847

2270


IMR 4227

Primer

Sabot

Max Charge
(gr weight)

Velocity
(ft/sec)

Energy
(ft-lbs)

250 gr. Hornady XTP (0.452")

Fed209A

MMP Black

58.0

2521

3524

300 gr. Hornady XTP (0.452")

Fed209A

MMP Black

47.0

2140

3048



Alliant Powder® Reloder® 7

Primer

Sabot

Max Charge
(gr weight)

Velocity
(ft/sec)

Energy
(ft-lbs)

250 gr. Hornady SST (0.452")

Fed209A

MMP HPH12

60.0

2251

2810

300 gr. Hornady XTP (0.452")

Fed209A

MMP HPH12

55.5

2031

2745

Note: velocities are from 24" SAAMI test barrel



The 58 grains of IMR-4227 with a 250 grain Hornady XTP is a tremendous overload. DO NOT USE THIS LOAD! Max has always been 48 grains with IMR-4227, before Savage dropped it due to its ignition issues.


The original Savage loads are as follows:


Original SAVAGE ARMS 10ML-II RECOMMENDED POWDER LOADS

IMR-4227
46 gr. 250 gr. Hornady .452" XTP 2,147 f.p.s. 2,550 f.p.e.
46 gr. 300 gr. Hornady .452" XTP 2,080 f.p.s. 2,880 f.p.e.
48 gr. 250 gr. Hornady .452" XTP 2,254 f.p.s. 2,820 f.p.e.
48 gr. 300 gr. Hornady .452" XTP 2,166 f.p.s. 3,120 f.p.e.

Accurate Arms XMP-5744
41 gr. 250 gr. Hornady .452" XTP 2,170 f.p.s. 2,612 f.p.e.
41 gr. 300 gr. Hornady .452" XTP 2,110 f.p.s. 2,940 f.p.e.
44 gr. 250 gr. Hornady .452" XTP 2,267 f.p.s. 2,837 f.p.e.
44 gr. 300 gr. Hornady .452" XTP 2,218 f.p.s. 3,270 f.p.e.

VIHTAVUORI N110
41 gr. 250 gr. Hornady .452" XTP 2,240 f.p.s. 2,785 f.p.e.
41 gr. 300 gr. Hornady .452" XTP 2,133 f.p.s. 3,030 f.p.e.
44.5 gr. (weighted) 250 gr. Hornady .452² XTP 2,368 f.p.s. 3,100 f.p.e.
(3.7cc Lee dipper) 250 gr. Hornady .452" XTP 2,353 f.p.s. 3,075 f.p.e.
44.5 gr. (weighted) 300 gr. Hornady .452" XTP 2,244 f.p.s. 3,360 f.p.e.
44.4 gr. (3.7 cc Lee dipper) 300 gr. Hornady .452" XTP 2,227 f.p.s. 3,300 f.p.e.

Notes:

IMR-4227 was dropped as a recommended load by Savage Arms. With a tight-fitting sabot, a clean breechplug, and the proper 209 shotshell primer, many shooters have used this propellant for years. However, without excellent maintenance, with carbon-fouled breechplugs, old or improper sabots, this load is prone to misfires.

Accurate 5744 was once called "XMP-5744" (pistol) and "XMR-5744" (rifle), but they are all the same propellant. The velocities published originally by Savage were incorrectly high. 44 grains of 5744 is good for 2050 fps or so. pushing a 300 grain saboted bullet.

Vihtavuori N110 is a propellant that, in my opinion, is very hard to work with, particularly with 300 grain projectiles. With 250 grain saboted projectiles, 36 - 39 grains is more sabot-friendly.

Hodgdon / IMR SR4759 is (was) the current standard Savage Arms test powder, at 42 - 43 grains behind a .452 Hornady XTP with the short MMP sabot.

In the very first 10ML module gun manual, Reloder 7 and Alliant 2400 were recommended propellants, with Winchester 571 listed as being "compatible." While Alliant 2400 has not been a good performer for me, I've not worked with Winchester 571 at all, Alliant Reloder 7 is one of the better Savage 10ML-II propellants, in my experience, with 290 - 300 grain saboted projectiles.




The stated Savage velocities have always been thoroughly screwed up. The new load data just adds to the pre-existing mess. No one is going to get 2133 fps from 100 grains by volume of Alliant Black MZ with a 250 grain SST. You'll be lucky to get 1800 fps.


The Savage 10ML-II breechplug was designed around a Winchester 209 shotshell primer: the Federal 209A may well be a bit too tight. Apparently, this primer and several of the so-called “new” loads were just recently thrown in as Savage is now part of Vista Outdoor, Inc. , the parent company of Alliant and Federal as well. Savage also now says “Measure smokeless powder charges by weight, not volume.” Small wonder people are confused as Savage's own owners manuals have long touted Lee smokeless powder volumetric dippers and Savage has sold them in their 10ML-II accessory kits.


  1. Alliant Black-MZ is a miserable propellant in the 10ML-II, essentially a re-visit of American Pioneer. Alliant Blue-MZ pellets are also poor: they are just a different-colored version of Triple Se7en pellets. If you want to use a “blackpowder sub” in your 10ML-II, use Blackhorn 209.

  2. The two best 10ML-II propellants in my experience are Accurate 5744 and Vihtavuori N120. Alliant 2400 and Vihtavuori N110 have far too fast relative burn rates, and are really rough on sabots as a result. Why Savage is trying to resuscitate old problematic propellants like Alliant 2400 and IMR-4227 at this very late date is something you'll have to ask them.

  3. Again, the 58 grains of IMR-4227 with a 250 grain Hornady XTP is a tremendous overload. DO NOT USE THIS LOAD! Max has always been 48 grains with IMR-4227, before Savage dropped it due to its ignition issues.


As of 10/22/2012 Savage is no longer accepting orders for the 10ML-II muzzleloader.

PLEASE ADDRESS ALL QUESTIONS OR CORRESPONDENCE TO:

Savage Arms
100 Springdale Road
Westfield, MA 01085

(413) 642-4261 for Instruction Manuals

(413) 568-7001 for Parts and Service

Copyright 2017 by Randy Wakeman. All Rights Reserved.

Please Note: Randy Wakeman, his agents, heirs and assigns, hereby disclaim all possible liability for damages including actual, incidental and consequential, resulting from usage of the information or advice contained in these articles. Use the data and advice at your own risk, and with extreme caution.

  


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