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.454 Casull

Hawkshaw
If you can get 18 to 1900 FPS from 7 1/2" Bbl. (240 gr. XTP), what would you expect from a 20" Puma Bbl? THX HAWKSHAW
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  • tsr1965
    Hawkshaw,

    That all depends on what loads you are using, and how they are loaded. If you are using a faster burning pistol powder for the 7 1/2 inch barrel, you will not realize that much more velocity. If you revert to slower burning powders that will burn more efficiently in rifle length barrels, I would expect that one could see 300-400 extra FPS. If you want some good examples look up the 357 magnum, and 44 magnum in a reloading manual in both the rifle and pistol sections. Some of the newer ones might even have the 454 in.

    Best
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  • The Old Salt
    Best bet is to buy a chronograph. I did. Loads that I clocked at 1500 out of a ruger super red clocked at 2050 out of the puma.
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  • beantownshootah
    quote:Originally posted by Hawkshaw
    If you can get 18 to 1900 FPS from 7 1/2" Bbl. (240 gr. XTP), what would you expect from a 20" Puma Bbl? THX HAWKSHAW


    Validating the earlier two posts, Gunweek claims 2300 fps for a max-power Winchester commercial 260 grain load.

    Ouch.

    Read the whole thing for good context:
    quote:http://www.gunweek.com/2007/feature0101.html

    There are heavier loads available and the Winchester 260-grain Partition Gold is one of the best. This is a full power load developing 2,300 fps. Compare this to the .30-30's .308 inch 150-grain bullet at 2,200 fps and you will see the Casull round has the greater potential to drop large animals at moderate range. The 260-grain bullet uses proven Nosler Partition technology. The Nosler bullet is among the most proven on the planet and translates well to the .454. This is a heavy load, but the Puma kicks no worse than a lightweight .30-06 rifle with this load. One of my friends compared the Puma's kick with this load to the 7mm Magnum in a standard rifle.

    (Remember, the velocities I am quoting are carbine velocity. The loads will lose 300 to 400 fps when fired from a handgun.)

    The Hornady 300-grain load exited the 20-inch Puma barrel at 2,000 fps. The standard deviation or difference in velocity between shots was remarkably low, on the order of 12 fps for 10 shots. This load is also very accurate. The thump is there but this load seems to be well balanced and the 300-grain bullet produced quite a cloud of dust on the berm. This bullet is considerably different in appearance than other XTP bullets, as it must be stronger than .45 Colt bullets to hold together at an extra 500 fps. This bullet is among the best choices as a single all-around load for the Puma.

    Cor-Bon produces a record seven loadings in .454 Casull. One is a reduced power load using a 240-grain jacketed hollow point. Similar to the Winchester loading, this one offers .44 Magnum power for those hunting thin-skinned game or simply ducking the .454's recoil. Accuracy is excellent. A 265-grain loading broke about 2,300 fps, while the 300-grain load exhibited 2,100 fps. The 265-grain bonded core load is intended for heavier game while the 300-grain load will expand quickly for short range brush hunting. Remember, bullet weight alone is not the sole indicator of a loading's performance. The 265-grain load is quite interesting and I hope one day to take the measure of a bear with this loading. The Cor-Bon loads gave excellent results, feeding smoothly and exhibiting good accuracy.
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