Case capacity appears to be very close to the 358 norma, and there is plenty of data for it. I also plan to load to milder pressures.
If anyone has seen a load manual or a handloader article on this round, it'll be greatly appreciated. I'll have to swing by the library and see if it is in the Big Bore Rifles and Handloading book by Wolfe Publishing.
Thanks for the response, I'll have to check my stack of Handloaders, there is an offhand chance I have that issue. If not, I'd greatly appreciate a copy of the article,
He says, "An alternative load which has given excellent results uses 70 grains of H380 behind 225 grain Woodleigh bullets in either solid or softpoint."
A Dave Campbell of Toklat Arms, Eagle River, Alaska, is said to use .375 H&H brass with the rims turned off and trimmed, and, "...reports using 48 grains of IMR-4064, Federal 215 primers and 250 grain Hornady spirepoint bullets."
He also indicates that proper bullet diameter is .356 inches in his original Rigby rifle. He used 225 grain Nosler Partitions, presumably in .358 diameter, and 225 Hawks, with no diameter specified. Hawk may make a .356 bullet. He does not write of any pressure issues associated with the use of .358 bullets, but he was only attempting to equal, not exceed, original Rigby loads.
A pre-war ICI ammunition catalog listed several varieties of 225 grain jacketed bullets at 2635 fps. Since the .35 Whelen can easily push a 225 grain bullet to 2635 from a case with much less powder capacity, I'd have to conclude that the Rigby cartridge is designed for relatively low pressures. That being the case, even if the bullet used is .002 too large in diameter, my speculation is that a factory equivalent load may not generate enough pressure to make a significant difference.
Even with the relatively low sectional density of its 225 grain bullet, John Taylor wrote approvingly of the cartridge and it's application to non-dangerous African game in his "African Rifles and Cartridges".
If you can snag a copy of the 1996 Handloader's Digest at a gun show or other source, you'll find it quite interesting reading.
All the best in your endeavor,
BigIron
[This message has been edited by BigIron (edited 01-19-2002).]
quote:Originally posted by BigIron:
In Handloader's Digest 1996 is a lengthy article on the 350 Rigby Magnum in an original Rigby rifle by Colin Greenwood. He used Nobel 0 Rifle Powder for his efforts, a powder which has apparently been discontinued, and which I never saw here in the States (Greenwood is British).