Purportedly at the time of its introduction, noted authority Phil Sharpe reported that DuPont developed IMR-4350 to optimize the performance of the only “magnum” cartridge of the time, the .300 Holland & Holland Magnum. True or not, with the introduction of IMR4350, cartridges like the then-wildcat .22 Varminter (.22-250) and .25-06, the .270 Winchester and the .300 H&H Magnum, all of which would have been considered overbore capacity at the time, received a much heralded boost in performance from IMR-4350.
In the first “Propellent Profiles” review of IMR-4350 in 1970, John Wootters described it as a “landmark” powder (Handloader No. 27, September-October). IMR-4350 was a game-changer when it was introduced in 1940 and continues, 80 years later, to define the velocity and accuracy potential of many of the latest cartridge designs. IMR-4350 has become the propellant of choice of handloaders who find it a well-balanced powder for a broad selection of the “fat case, small diameter projectile” cartridges that have become, some more, some less, popular in more recent times. These include cartridges like the .22 CHeetah MKI & MKII, 6.5-284 Norma, 6mm and 6.5 Creedmoor, .270 and .300 Winchester Short Magnum, 7mm and .300 Remington Short Action Ultra Magnum and the .300 Ruger Compact Magnum.
هذه القصة مأخوذة من طبعة October - November 2020 من Handloader.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
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هذه القصة مأخوذة من طبعة October - November 2020 من Handloader.
ابدأ النسخة التجريبية المجانية من Magzter GOLD لمدة 7 أيام للوصول إلى آلاف القصص المتميزة المنسقة وأكثر من 9,000 مجلة وصحيفة.
بالفعل مشترك? تسجيل الدخول
OEHLER's New System 89 Chronograph
Measuring Bullet Performance Downrange
The Problem with Low Pressure Loads
Bullets & Brass
Measurements for Rifle Handloading
Handy Techniques for Accurate Ammunition
THE BRASS RING
In Range
Semi-custom Bullet Moulds
Mike's Shoot in' Shack
REVISITING THE 6.5 -06 A-SQUARE
Loading New Bullets and Powders
Cimarron Stainless Frontier .45 Colt
From the Hip
9x18mm Makarov
Cartridge Board
Alliant 20/28
Propellant Profiles
.224 Clark
Wildcat Cartridges