Shoots100 Posted March 15 Share Posted March 15 I've used/tried a lot of rifle calibers during my 4+ decades of predator hunting. This is what I'm using in 2023. Because I like it and it works very well for me, the .243 has been my primary cartridge for most of my time predator hunting, only switching to a .20 caliber cartridge for use when hunting in caliber restricted areas of the state. Before I started hunting in those areas, the .22 hornet was my backup cartridge of choice. The 204 Ruger is available, but because I can, I wanted to build a wildcat .20 caliber chambered rifle. I decided to build a 20 practical, which is a .223 case necked down to 20 caliber. I was looking to mimic the 22 hornets speed and wanted to push a .20 cal 40 gr projo past 4,000 fps. The 20 practical was the easiest and cheapest way for me to accomplish that. Plenty of brass available and places to buy savage pre fit chambered barrels. In terms of forming/sizing brass and loading for a wildcat cartridge, this is as easy as it gets. One pass through the press to form the brass, load it and go to the range. No difference in performance from a first sized or fireformed piece of brass. I now prefer the 20 practical over the 22 hornet. In 2021, after buying and liking the .243 Savage Impulse Predator straight pull rifle, I wanted to build one in .20 practical. Only problem is that Savage has no .378" .223 rim size bolt head available for the Impulse rifle and there's no aftermarket support for it either. So my quest was to find an acceptable .20 cal cartridge with a .473" rim dia case to fit the Impulse bolt head. Late in 2022, I was informed about the 20-250 cartridge, which fit all of my requirements. I don't know how I didn't find out about the 20-250 cartridge before that during my research. .20 cal, .473" rim Dia, longer case to avoid magazine feeding issues with AI magazines, easy two step brass forming and loading. I found a barely used barrel that's too long and heavy, but I didn't have to wait 9 months to have one made. I'll get it shortened and maybe reprofiled after the 2023 season ends. One negative about the 20-250 cartridge, is barrel life. All small caliber bottleneck wiz bang rifle cartridges suffer from short barrel life. The 20-250 is supposed to have just over a 1k round lifespan shooting super hot 40 gr 4,500 fps loads. The way I look at it, it's my backup rifle and if I shoot it 50 times a year with mild 55 gr loads, this barrel should last me at least 30+ years. I don't know if I'm going to be around that long, so I bought some tough 40 gr projos and plan to shoot it like I stole it. The 20-250 is super accurate, drops coyote and is a great addition to my predator hunting cartridge line up. SJC 3 Quote Link to comment Share on other sites More sharing options...
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