250 Donaldson Ace

M

mshelton

Member
I posted about this on another forum but figured a benchrest historian or two over here may know some info on it.

I'm looking at a project gun, based on a Browning b78 action as an old 40s style falling block varmint rifle.
For some reason I'm really leaning towards the 250 Donaldson Ace, the only real info I have on it is some case dimensions and that it's formed from the 250 Savage brass. I've included a picture of it from "Woodchucks and Woodchuck Rifles" by CS Landis.
I'm hoping one of you guys can tell me about some possible loads for this and what velocity range should expect for something like a 100g bullet. I'm not looking for a speed demon, if I was I'd of picked a different cartridge and different action. Something about looking at that diagram says to me that it would be a fine tame little cartridge in a falling block capable of varmints and whitetail here in VA.

Any info is definitely appreciated.

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We've been shooting something similar since the early 1990's; namely the .25 Dart. It was created by H.L. Culver in the 1960's and saw competition. Basically it's a shortened .220 Swift necked up to .25-cal. Here are photos of the cartridge and our rifle:





We ran a tight 0.281" chamber and do neck turn. It's a damn fine shooting round, though it can't hold with the BRs and PPCs.

-Lee
www.singleactions.com
 
mshelton,

You might find some info on the 250 Don. in L.R. Wallack's book, "Modern Accuracy in Bench Rest Shooting" It was originally published in 1951, and is currently available on Amazon in reprint. There is a chapter devoted to cartridges larger than 22 Cal.

FWIW,

Steve Kostanich
 
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