Cpt. Curl - illegal - due to having 2 barrels?
: I have only shot a few rounds of T7 myself, and only from my .45 Flinter with a BP booster. To much hassel.
; As to the pressure excursions - one need only look at the 'quality' single shot rifle action of a .45 3-1/4" BPE that was blown to smithereenies by using too fine a grade of real BP. This as pictured in Greeners book. The 120gr.(only) charge detonated, destroying the action and barrel.
: We sometimes become complacent with BP and it's substitutes - writings of the 70's and 80's where prominent, but 'learning streak' gun writers repeated 'myth's' as being fact as they had little or no knowledge themeselves and got paid by the word. Things like you can not put in to much powder as any excess will just blow out the muzzle. Bull - crap!
: The .45 3-1/4", loaded with a 500gr. bullet and 140gr. 2F developes 28,000PSI breech pressure according to Accurate Arms who tested the Sharps before developing their own data. In the 70's, the writers said the maximun BP could possibly produce was 15,000PSI.
; Be careful out there.