Boats, do you have John J Donnelly's book the handloaders manual of cartridge conversions,   some goos stuff in it bout 25 call,,,  had a friend whhad a 25-35 ackley imp,  did loading for him in colo,,,   didnt shoot as good with fast stuff till ya got down to 2900...

Boats
Why not load the 30 cal with a lighter bullet? My idea of long range is my 7mm ackley imp. I have been thinking about the 7mm waters for a 310 Martini. Had a 25 06 #1 didn't like it at all.
Tom

It's true that a 30/1906 is about as good as it gets for long range. O3 I have now just re-barreled with it's 3rd tube, 1935 Arsenal barre, It will shoot as well as any of the new magnums we see on our club range.  My Cousin has a 7mm Mag he closes his eyes when it goes off.  The 03 outshoots it every time we take them out. They do perform best with heavy bullets though. 165's in mine.

I was spoiled last 10 years with a good 7mm08 that performed well on deer with 139 gr bullets and a lot less recoil. Shooting it Silhouette It hit our Club Rams much harder with 168's at 500 meters than the 30/06 with 168 match kings. 7/30 Walters has always been intresting to me but for a light rifle not something heavy intended to be used long range.

Stoping my rambling and to the single shot cartridges. Frank, Never though about looking in Sharpes will do it now. Have Ackleys books too. So you figure the 25 Kraig with the full length case is about the same capacity as a 257 Roberts ? if so might be just the ticket.  What do you figure the 25/35 gives up in case capacity to the .25 Krag ? seems to me it would be considerably smaller.

Just thinking about a smaller caliber in a Rimmed case for my CPA single shot giving adequate deer performance at 300 yards.

Boats

As far as the 25/35 Imp goes, If I do mine, I will leave a .26 - .27 long neck. My Imp reamer has a 30 deg shoulder at .406 dia and I believe the case capacity will be very close to the 250/3000. I'm sure that I would be able to get at least 3000 fps from the 87 gr spitzer maybe as much as 3200. 26 - 2800 with the 117.

I have a 25 Remington and they list 2900 fps loads for the 87 gr and that is what I base my estimate on.

Frank

Thats good advice, Think only way I would go for one would be turn key gunsmith that has built one before and can supply dies etc same time.
 
Be nice if CPA has built some

Boats

Boats, I am sure CPA could and would build a Rifle in that caliber. However it would be a Blued action as they show in their advertisement's. The Blued actions are Heat treated for High Pressure calibers. The caliber you should go for is ".25 Niedner Krag" Niedner was the creator of this 30-40 krag necked down to .25 Caliber with a blown out shoulder with a steep angle. Also RCBS offers dies for this caliber. I don't remember if they were a special order or not but they do offer them, I have a set. I have a Pope .25 Niedner Krag. I shot it with 39 Gr 3031 and a 100 gr Remington standard bullet as I had some at the time. It was and  still is a tack driver. I have not shot it much as I wish to preserve it's accuracy and condition. But the 39 Grain load had no outward effects on the brass. If you have one built make sure you specify neck diameter as mine requires the Brass be neck reamed during the initial forming operations. The neck is still quite tight as a fired shell will NOT accept a .25 caliber jacketed bullet pushed in by hand. This was a Jersey City Pope and is stocked in the Varmint Rifle style. Beautiful work, fancy wood and the finest Hiwall set triggers I have ever experienced. Regards, FITZ.

Thanks again

Fitz That's real interesting and illustrates what I have read about the cartridges history. Like to look at that Pope one time.

Been looking a ballistic charts and Bob Hagel's "Game Loads and Practical Ballistics"  It's the go to book on game shooting with Rifles.  Very different perspective than the one we have as target shooters. He speaks from Experience something a lot of the gun writers don't have

Hagel gives the 25 caliber 87 Grain Varmint bullets as sure hitters to 300 plus yards 117/120 gr Big Game bullets further. 300 is all I need in the East, elevated deer stands on cultivated fields. 257 Roberts ballistics are the ones I am looking at.  300 yards you do need a rifle that will shoot however. Little bit off is a big miss at distance

Let you know what Paul Shuttleworth says

Boats