I believe we are all aware the Contender frame stretches.
My TC rifle barrel was about useles with the standard .25-35 WCF chamber.
Reaming to the Improved case gave me a rifle which will extract cases loaded to considerably higher pressure.
Neck sized cases will chamber and trip the interupter. Case life is good with considerably more than ten loads per case.
The only difference is case shape. I will accept any explanation, and enjoy the very real benefit.
I have shot the 20" .30-30 Improved side by side with the 20" .307 Winchester, the 26" standard .30-30 and the 22" .308 Marlin Express. The .30-30AI can be loaded safetly to higher pressure to compete very favorably with the greater capacity cases.
Because the .30-30AI was not originally intended for use in the lever action rifles it is an interesting side benefit.
If not lever action rifles, what rifles was the 30-30AI intended for? The Winchester 54?
What is the actual case capacity difference between the 30-30 and 30-30AI?
