Larry,
It would only be at zero, or below, as I already posted. I know it wouldn't hurt my shoulder, shotgun ammunition looses quite a bit of steam aproaching zero degrees, and it gets worse as the temp goes down further.
Above that temp, regular 1 1/8th oz loads would go back in the gun, and get me all I needed.
In the Silver Snipe, I load the 1 1/4 oz load in the top tube, and just use a lighter load in the first barrel. I don't get to do a ton of shooting in those temps, so, typically the second round would be a hail mary, and usually wouldn't get taken.
For what it is worth, 1 1/4 oz loads were the MINIMUM my Dad used in the Silver Snipe, he bought into all the hype back in the day on baby magnums, and the gun is still tight as a tick. It is still stiff to open.
It isn't proofed any higher than the Webley, either. Bet in the years I've got left to shoot, I'd be just fine.
And I wouldn't be shooting a NID.
Best,
Ted
