7mm Remington Magnum
A number of people should be given equal
shares of credit for the introduction of the 7mm Remington Magnum. There
was Warren Page who had many friends at Remington and who sang the praises
of a wildcat called 7mm Mashburn Super Magnum in many of his hunting articles.
There was Les Bowman who also had many friends at Remington and who necked
up the .264 Winchester
Magnum case to 7mm and had a rifle built in what he called .280 Remington
Magnum. Jack O'Connor's name probably should be on this list since his gift
of a rifle in .275 H & H Magnum is what sparked Bowman's interest in
a 7mm magnum cartridge.
We must not overlook Remington's own Mike Walker who took note of what was being said and who nudged Remington brass into making the right move. It was a good move too. Since the advent of smokeless powders, no more than a couple of other cartridges have been so successful so quickly as the 7mm Remington Magnum. For several years after its introduction in 1962 the demand for Model 700 rifles in this caliber far exceeded Remington's ability to produce them.
Only a small handful of other cartridges have served dual roles as well as Remington's Big Seven. It has established an enviable record as a big game cartridge and as an accuracy cartridge for 1000 yard competition. Sierra, Hornady, and Speer offer superbly accurate match grade bullets in 7mm caliber, and those firms as well as Nosler and Remington make excellent big game bullets for the handloader.
When loaded with a 140 grain spitzer, the 7mm Remington Magnum is a powerful and flat shooting cartridge, but for all use on game up to the size of elk and moose the cartridge is seen at its best with a 160 grain bullet loaded to about 3000 fps. For big game loads, the single best powder for use with all bullets weights is H4831. When loading the heavier bullets, H1000 also does a fine job. In target rifles, faster burning powders such as H4350 and IMR-4350 often produce the best accuracy with match grade bullets.
Source: Hodgdon Data Manual 26th Edition
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