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My Old Winchester Model 70 Part I And the 243 Winchester

It seems it has been raining here in Maine for weeks. Not really, it just seems that way. But I have had the misfortune of not being able to mow the long, or seal the deck, or weed the garden.  As an upside, the anti squirrel bird feed and custom chipmunk baffle have keep the…

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300 AAC Blackout Handload Data - Remington 700 Chassis Pistol

Warning: Bullet selections are specific, and loads are not valid with substitutions of different bullets of the same weight. Variations in bullet length will alter net case capacity,  pressure and velocity. Primer selection is specific and primer types are not interchangeable. These are maximum loads in my firearms and may be excessive in others. All…

Real Guns is a membership supported publication. Membership offers access to: all current and archived articles, handload data, ballistic calculators, and the Real Guns Image Gallery. Membership is available for $29.95 for twelve months.

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The Smith & Wesson M&P 15T M-LOK A lot To be said for turnkey firearms

06/14/2021 Never in search of a personal perfect $3,000 – $5,000 AR, if an AR can function reliably, if it can be repaired with off the shelf AR standard parts and if it can put 3 shots into sub MOA circles, I’m all set. I built a good number of unique AR type firearms in…

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The 270 WSM – The best of the WSMs? Winchester's XPR Renegade Long Range Threaded

06/06/2021 I am pretty sure that life is lived on a sliding scale of intensity. On one side is tranquillity, as in parents/grandparents who live in Maine and do not answer the phone or doorbell. One the other side is controlled chaos, as in an eldest son, daughter-in-law and granddaughter who live in Texas. The…

Real Guns is a membership supported publication. Membership offers access to: all current and archived articles, handload data, ballistic calculators, and the Real Guns Image Gallery. Membership is available for $29.95 for twelve months.

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Savage’s Impulse in 300 Winchester Magnum Part 2 Pick a bullet, any bullet, but don't tell me what it is...

05/30/2021

In part I, the Savage Impulse was checked out with Winchester Superformance 180 grain ammo, rated at 3,130 fps and clocked 3,162 fps and Remington Express Core-Lokt 150 grain ammo, rated at 3,120 fps that clocked 3,261 fps.  The largest group shot was 0.8″, the smallest was 0.3″. Excellent performance, but not necessarily ammunition or bullets I would routinely use.

The 300 Winchester Magnum is a relatively flexible cartridge. For the handloader, it can be loaded down below 308 Winchester velocity levels, or loaded up to take full advantage of its large case capacity for long range shooting, and/or for heavier game.
Bullets pictured above: Barnes TTSX 130 grain, Berger VLD Hunting 168 grain, Berger VLD Hunting 175 grain, Nosler Partition 180 grain, Hornady ELD-X 200 grain, Hornady ELD-X 212 grain.

Handloads for the Savage Impulse 300 Winchester Magnum

Warning: Bullet selections are specific, and loads are not valid with substitutions of different bullets of the same weight. Variations in bullet length will alter net case capacity,  pressure and velocity. Primer selection is specific and primer types are not interchangeable. These are maximum loads in my firearms and may be excessive in others. All loads should be reduced by 5% as a starting point for development where cartridges have greater than 40 grains in capacity and 10% for cartridges with less than 40 grain capacity following safe handloading practices as represented in established mainstream reloading manuals. Presentation of these loads does not constitute a solicitation for their use, nor a recommendation.

Cartridge: 300 Winchester Magnum (64000 PSI MAP)
Firearm Savage Impulse
Barrel Length 24.00″
Min – Max Case Length 2.620″ +0.0″/-0.020″
Min – Max Cartridge Overall Length 3.215″ – 3.340″
Primer CCI 250
Bullet Diameter 0.3090″ +0.000″/-0.0030″
Reloading Dies Redding FL

 

Bullet Type  Bullet Weight
Grains
Net H2O
Grains
Capacity
COL” Powder Type Powder Charge
Grains
Muzzle Velocity
fps
Muzzle Energy
ft/lbs
100 Yd
3 Shot
Group”
Barnes TTSX
130
83.7
3.340 RE 17
77.5
3592
3725
0.9
Barnes TTSX 130 83.7 3.340 Hybrid 100v
77.5
3614
3771
0.6
Barnes TTSX 130 83.7 3.340 IMR 4350
78.5
3591
3723
0.8
Berger VLD Hunting 168 82.2 3.340 Re 22 79.5 3194 3807 0.7
Berger VLD Hunting 168 82.2 3.340 IMR 7828 SSC 79.5 3187 3769 0.3
Berger VLD Hunting 168 82.2 3.340 Norma MRP 80.5 3222 3874 0.5
Berger VLD Hunting 175 82.2 3.340 Alliant 4000 74.5 3158 3876 0.4
Berger VLD Hunting 175 82.2 3.340 IMR 4350 73.0 3103 3742 0.6
Berger VLD Hunting 175 82.2 3.340 IMR 4831 74.0 3112 3764 0.4
Nosler Partition SP 180 81.8 3.340 AA MagPro 82.0 3144 3952 0.7
Nosler Partition SP 180 81.8 3.340 IMR 7828 SSC 78.0 3137 3934 0.9
Nosler Partition SP 180 81.8 3.340 RS Hunter 74.5 3102 3847 0.9
Hornady ELD-X 200 77.7 3.340 AA MagPro 78.0 3030 4078 0.8
Hornady ELD-X 200 77.7 3.340 Re 25 76.0 3008 4019 0.3
Hornady ELD-X 200 77.7 3.340 IMR 7828 SSC 74.0 2988 3966 0.6
Hornady ELD-X 212 79.3 3.500 AA MagPro 77.0 3005 4252 0.6
Hornady ELD-X 212 79.3 3.500 H1000 77.5 2937 4062 0.7
Hornady ELD-X 212 79.3 3.500 IMR 7828 SSC 73.5 2878 3900 0.5

The 300 Winchester Magnum is very straight forward to handload. Most of the notes I see in articles that are presented as unique approaches can be found in the first section of most reloading manuals; clean and inspect brass, trim to a uniform length, check cartridge COL for proper clearance from rifling, don’t drink coffee at the reloading bench, don’t forget to pick the kids up at school, etc. I am not mocking proper procedures for handloading. I am mocking the notion that they are optional or a casual suggestion.

Back to the Savage Impulse

The Impulse stabilized both light and heavy, short and long bullets with its 1:10″ twist. Accuracy, as noted on the load data table was excellent. Is there better accuracy potential from handloads other than those presented? Sure. I tend to shoot in a closer in environment so better than MOA at 100 yards in actually a good deal more than I need. Also, I tend to push for higher velocity, where backing off a bit might better serve accuracy.

The load data presented are those I have worked up for other 24″ barrel 300 Winchester Mag rifles I have worked with over time, tweaked for this particular occasion.

The subject Savage Impulse Hog Hunter held up well and looked like new after being flogged at the range. The only thing I would like to see is 7 lb, or sub 7 pound version. I am sure a good amount of weight reduction could come out of the barrel’s profile and length, in some non-magnum, calibers.

The Savage straight pull, barrel extension lock up design is stout, feed is smooth, extraction/ejection assured, and reliability is absolute. Can’t wait until I pick up the next conventional bolt action rifle and wonder why tugging on the bolt handle won’t open the action.