The 25 GIBBS - the speeds are quoted from a book on the GIBBS line . 26" barrel , 1 x10 twist , ( 117 gr ) - 3332, 3317 , 3295, 3285 - (100 gr) - 3545 , 3510, 3502 ,3505 - (87 gr ) - 3784 , 3789, 3768, 3762- (75gr ) - 3902, 3897, 3897 , 3861. Ray Romain (814)265-1948 chambers these - the 06 case was the base for these with the case blown forward about .040 with a shoulder of 30 to 35deg depending on caliber. Ray uses 06 or the 270 case which are longer .046 longer than the 06 case . a powder increase of 8 to 10 grains is the result , increased powder - increased speed.
the ones I've been looking at are the 6.5 and the 30 calibers . several people on this site have used these wildcats with great success , magnum speed all on 30-06 brass - good luck