338 Allen Magnum Parent case?

[300WSMMAD]

After seeing the threads on the 338 Allen Magnum, its got me thinking, Hmmm 338 LM or 338AM, but could someone please tell me what is the parent case for the 338 Allen Magnum.

Thanks in advance.

300wsmmad

 

[AJ Peacock]

The 338AM and 375AM parent case is the 408 Chey Tac. Here is a picture and a good discussion, there are other pictures around on the site as well.
http://www.longrangehunting.com/forums/f22/kirby-you-need-website-20165/


From left to right

224 Allen Magnum
270 WSM case .............. 107 gr ULD RBBT........3400fps

257 Allen Xpress
300 Dakota case ............ 142-156gr ULD RBBT..3300-3100fps

6.5mm Allen Xpress
300 Dakota case ............ 142-165gr ULD RBBT..3350-3100fps

270 Allen Xpress
300 Dakota case ............ 169.5gr ULD RBBT......3200fps

257 Allen Magnum
338 RUM case................ 156gr ULD RBBT........3300fps

6.5mm Allen Magnum
338 RUM case................ 165gr ULD RBBT .......3300fps

270 Allen Magnum
7mm Rum case................ 169.5gr ULD RBBT....3400fps

277 Allen Magnum
338 Lapua case................ 195gr ULD RBBT.......3200fps

7mm Allen Magnum
338 Lapua case................ 200gr ULD RBBT......3250fps

338 Allen Magnum
408 Chey Tac case ........... 300gr ULD or SMK ...3400-3500fps


AJ

 

[Fiftydriver]

I also have my 338 Allen Xpress if you want upper level performance but not quite the extremity or size of a full blown 338 Allen Magnum rifle.

The 338 AX is an improved version of the Lapua.

 

[Magnumdude]

When does significant throat erosion start and guilt-edge accuracy drop off? 200 rounds?