[quote=J. Sappington]Is it possible to lengthen a 20 ga nitro special from 2.5 to 2.75? Is there enough meat there? What's the average cost to have them both lengthened? Thank you?
Yes, there is plenty of meat there. I wouldn't worry about it in the least. I lengthened a 20 gauge Flues built in 1926 from 2 1/2 to 2 3/4 inch. I was reloading at that time also. But a Nitro, they're built solid. I throw modern shells through my Nitro all the time, even Kent's shells that are closer to a stick of dynamite then a shotgun shell that they call their Tungsten Matrix, no worries.
Why does he need to lengthen the chamber for 65mm to 70mm? Kent now offers nice Bismuth loads for 12, 16, 20, 28 and .410. Cabela's has them in 20ga for $15.99 per box of 10. That is only $2 more than I paid for Winchester branded ones 15 years ago. It's nice to see reasonably priced non-tox loads out there again. The $4 per round was kind of loco.
The Kent Tungsten Matrix were/are wildfowl loads the pic of ducks landing on waves of Lake Erie should provide a hint.
