I hope the more people are getting intersted in the tripletree, the more different bullets will be available for that caliber. I love the classic 300grain bullet, which was the reason I had one made up. However, a good spitzer in 230-250grain would turn this caliber into plainsgame rifle too.
The .333jeffery is good out to 200meters with the long 300grainer scoped or ironsighted, but could be turned into a 300meter+ springbok rifle with lighter bullets with higher BC.
I know most people will say: "why don`t you just get a .338win Mag"?. The .333Jeffery is a special cartridge just by the looks, which stands out from the crowd + its has been forgotten british cartridge for many years, until this forum came along:LOL. The case volume of the .33jeffery Vs .338winMag is something like 2% in favour to the winMag, no more. IF one wants to, he can duplicate the winMag ballistics very close with a lighter bullet. With the long 300grain bullet the winMag can be in trouble and loose , because the bullet steal casevolume, which the .333Jeffery would never care about, because all the bullet is in the long caseneck.
However, the .333Jeffery was never made to compete with the .338winMag in the first place, but actually compete with the .318WR or the 9,3Mauser at that time in period, to be the ultimate of all the medium bores. If one looks at the new Norma catalog, a 325grain bullet for the 9,3Mauser has a velocity of 670M/sec or 2198Ft/sec. That ballistic is done in a smaller case. The .333Jeffery does only 66Ft/sec faster with a 300grain, but in a bigger case. The .333jeffery is a lowpressure round.
I use today 65grain of Norma MRP or Rhino22 to a 300grain bullet. The M-velocity is 690M/sek, which is more than enough with woodleighs bullets. I wished Woodleigh would make a PP bullet in .333cal. The 300grain bullet is a very soft bullet, and velocity should not be exceeded, above the factory loads. I have shot Kynochs loads in my rifle, and they are very accurate, and they work very well on game too.
The caselengh is 64mm of the .Jeffery, but the Oal: is 87-88mm which leave almost 24mm of protruding bullet..almost an inch(25,4mm= 1"). This cartridge does need a long box of 90mm.