20 BR
Encyclopedia
20BR is one of the many 20 caliber rifle cartridges known as wildcats (not commercially available). It is basically a .22 BR Remington
case necked down to accept a .204" diameter bullet maintaining the same shoulder angle and overall length. It was primarily created to combine large powder capacity with a short efficient case design thereby giving superior performance to all other 20 wildcat cartridges available. Although there are some cartridges which came close;.20ppc, .20 Tactical
ect. Combining the ability to propel a 39/40 grain bullet at above 4000fps and the inherent accuracy of the BR case design, the 20BR quickly became the prefered flavour of many varmint hunters and target shooters alike.
Other advantages of this cartridge include; its ability to suite any rifle action which has the 30-06 sized bolt face(fitted with the appropriate barrel and chamber size of course), its short length which enables action makers to utilise shorter ports in their actions promoting rigidity, easily formed cases and good reloading characteristics.
Some drawbacks of this cartridge include; it is not commercially available and rifles must be custom made, some would argue that is an overbore (barrel burner) cartridge and therefore is not practical when compared to less aggressive 20 wildcat chamberings.
In more recent times some other wildcat cartridges have come about which exceed the ability if the 20BR without being excessively larger or impractical, notable amongst these are the 20 Fergusson Ace
and the 20 Magna which both have their origins with the 20BR.
.22 BR Remington
The .22 Bench Rest Remington cartridge, commonly referred to as the .22 BR Remington, is a wildcat cartridge commonly used in varmint hunting and benchrest shooting. It is based on the .308 x 1½ inch Barnes cartridge, necked down to .22 caliber, lengthened by .020 inches and with the shoulder...
case necked down to accept a .204" diameter bullet maintaining the same shoulder angle and overall length. It was primarily created to combine large powder capacity with a short efficient case design thereby giving superior performance to all other 20 wildcat cartridges available. Although there are some cartridges which came close;.20ppc, .20 Tactical
.20 Tactical
The .20 Tactical is a wildcat centerfire rifle cartridge, based on the .223 Remington case, necked down to fire a .204" caliber bullet. The .20 Tactical was designed by Todd Kindler and predates the .204 Ruger factory round. The case has approximately 3 grains less powder capacity than the popular...
ect. Combining the ability to propel a 39/40 grain bullet at above 4000fps and the inherent accuracy of the BR case design, the 20BR quickly became the prefered flavour of many varmint hunters and target shooters alike.
Other advantages of this cartridge include; its ability to suite any rifle action which has the 30-06 sized bolt face(fitted with the appropriate barrel and chamber size of course), its short length which enables action makers to utilise shorter ports in their actions promoting rigidity, easily formed cases and good reloading characteristics.
Some drawbacks of this cartridge include; it is not commercially available and rifles must be custom made, some would argue that is an overbore (barrel burner) cartridge and therefore is not practical when compared to less aggressive 20 wildcat chamberings.
In more recent times some other wildcat cartridges have come about which exceed the ability if the 20BR without being excessively larger or impractical, notable amongst these are the 20 Fergusson Ace
20 Fergusson Ace
20 Fergusson Ace is a wildcat centerfire rifle cartridge based upon the 20 BR which has a blown out shoulder angle of 45 degrees. It was designed and developed by legendary gunsmith and varmint hunter Gaylon 'Ace' Fergusson and predates the .204 Ruger factory cartridge...
and the 20 Magna which both have their origins with the 20BR.