Am interested in this round. Anybody have experience with it?

Mtn

There are several variations of the 25 Krag and you'd need to be more specific. There are short ones, medium ones, and full length. Also, the shoulder angle will vary (not all "ackley" cartridges were 40 degree).

ray

My main interest would be in the full length Krag case. But hey, I'd like to hear about any of the variations. Would like to hear from someone who has experience with this wildcat.

Case capacity of the non-AI, full length .25 Krag will match that of the .257 Roberts, and so performance at Roberts pressures will be nearly the same. Blowing out the case to AI shape will give you a little more fps at the same pressure. A calculator to estimate case capacity from case dimensions can be found here. From that page, there is a link to a Powley Computer which will give you a fair estimate of the performance you can expect with that case.

A very similiar round is the 303/25. I've got one of those based on a P14 action and loaded to the actions potential, its basically a 257Roberts +P in disguise. The SMLE based conversions in 303/25 essentially duplicated the 250Savage.
Cheers...
Con

Mtngun Similar to what Con has already said. I have a 25-303 Epps improved which is very similar to the long 3040 imp. In a strong action such as a P-14 it is basically a rimmed 257 Imp and only gives up about 200 fps to a 25-06. I find case life is very good and easy to fireform. 4350 to 4831 burning speed powders work well with 100 gr and heavier bullets. Hope that helps

Not exactly the same, but I have a 7mm/30-40 Krag Improved. The shoulder was moved forward so that it has 67.0gr of water capacity. If you just neck it down, without moving the shoulder forward, the neck is too long. As it is, the neck on mine is 0.340" in length -- more than enough neck length for a 7mm. It is just about identical to the .280 Remington in all ballistic respects. It is shot from a Ruger No. 2 (a Ruger No. 3 action in 30-40 Krag with No. 1 wood and a 26" Lilja barrel).

Harry, interesting cartridge. Who did the chamber job for you? How much were the custom dies?

MtnGun: I did not make it. I saw it on the rack of a local gunshop. The guy who had it made had died. His widow gave it to them to put up for sale at close to what he spent on it. It was there for about a year. When it came down to half the cost, I started dickering on it. Took about 6 months. No one else came forward, so I finally got it.

It had two sets of dies with it (one unopened) and one dummy cartridge. Forming cases was easy. I am not competitive as a target shooter, but I have been able to shoot 1/2 MOA at 200 yards on several occasions (from a sandbag rest). It rarely shoots more than 1 MOA even when I am shooting normally.

The load I am shooting is a 140gr Barnes Triple-Shock seated 0.005" off the lands with 52.0gr of IMR4350 (this is case full without compression). Velocity is 2,880fps. I tried two other bullets and one other powder before settling on this load. BTW, I already had a Ruger No. 3 in 30-40 Krag so I knew the basic gun.