« Reply #3 on: April 24, 2011, 04:10:13 PM »
									
								 
							 
							
									Curt,
I think shooting 410 shells in a 4570 will result in a lot of semi burnt powder in the barrel and very poor velocity.  The approx. diameter of a 410 shotshell cup (this is also the gas check to seal the bore) is around .41" and the bore diameter of the 45/70 is .458.  Also, if the shot cup does engage the rifling it will start to spin and will result in  a "smoke ring" shot pattern which isn't much good for hunting.  Also, you have a firing pin alignment problem because the base diameter of a 410 shell is about .48" and the base of a 45-70 is .505".  
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							RIP Tom: Tom Nolan, ( bikerbeans) passed away this afternoon (02-04-2021).
Why be difficult, when with a little extra effort you can be impossible?
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MINE:  270W, 308x444, 44 Bodeen, 410 shorty rifled slug gun, 445 SuperMag Shikari, 45 ACP shorty,  45-70 Shikari, 45 Cal Smokeless MZ, 50cal 24" SS Sidekick, 50 cal 24" Huntsman, 50 cal 26" Huntsman, 50 cal 26" Sidekick, 50-70 Govt Shikari, Tracker II 20 ga shorty, 20 ga VR Pardner, 20ga USH, 12ga VR NWTF, 12ga Tracker II shorty WITHOUT scope, 12ga USH, 10 ga  Pardner Smoothbore slug gun & 24ga Profino Custom rifled slug gun.