Raimey,
129,43= 8.38mm(330"). It is proofed for single projectile, if it is rifled,it would be a 9mm. If smooth bore, between 8 and 9mm, and 32 is a little small. Is it centerfire or rimfire? 9.1x40R is almost within range, and was avaliable with shot or bullet.I doubt it is 9.1 as it was powerful enough for Reh,before the caliber restrictions,and the gun might not hold it.These comments are for the bolt gun.
Mike

Last edited by Der Ami; 10/16/14 04:26 PM.