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Stevens Tip Up Shotgun (Read 4279 times)

slumlord44 Frequent Elocutionist Offline Posts: 2850 Location: Lebanon, Illinois 62254 Joined: Dec 21^st, 2007	Stevens Tip Up Shotgun Feb 20^th, 2010 at 1:56am	Print Post
	This is a little off subject, but the action is the same as the single shot rifle. USPS just delivered a 12 Guage that locks up tight and has a decent fluid steel barrel, not damascus. Plan on shooting it with black powder or pyrodex but am wondering if it would be safe with light smokeless loads. Do not want to hurt the gun or my aging body. This is the pre 1900 tip up action.


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38_Cal Frequent Elocutionist Offline Posts: 2257 Location: Montezuma, Iowa Joined: Apr 27^th, 2005	Re: Stevens Tip Up Shotgun Reply #1 - Feb 21^st, 2010 at 12:12am	Print Post
	Check your chamber length, headspace and firing pin diameter/breech face firing pin hole diameter and f.p. protrusion and shape. Chambers for 12 ga. guns were not standardized on 2 3/4" until 1930. Also, forcing cone angles were changed over the years. David

	David Kaiser Montezuma, IA
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slumlord44 Frequent Elocutionist Offline Posts: 2850 Location: Lebanon, Illinois 62254 Joined: Dec 21^st, 2007	Re: Stevens Tip Up Shotgun Reply #2 - Feb 21^st, 2010 at 10:19pm	Print Post
	Chamber length seems to be 2 3/4. measures close to 3" total. Not sure what to look for as far as forcing cone goes and what problems it would be. Gun locks up tight so I am assuming headspace would be ok. What exactly am I looking for on the firing pin hole and pin? I undersand pin extrusion. Has to stick out far enough to fire the primer. My main concern is if the action is strong enough for light factroy smokeless ammo.


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38_Cal Frequent Elocutionist Offline Posts: 2257 Location: Montezuma, Iowa Joined: Apr 27^th, 2005	Re: Stevens Tip Up Shotgun Reply #3 - Feb 22^nd, 2010 at 10:31am	Print Post
	slumlord44 wrote on Feb 21^st, 2010 at 10:19pm: Chamber length seems to be 2 3/4. measures close to 3" total. Not sure what to look for as far as forcing cone goes and what problems it would be. Gun locks up tight so I am assuming headspace would be ok. What exactly am I looking for on the firing pin hole and pin? I undersand pin extrusion. Has to stick out far enough to fire the primer. My main concern is if the action is strong enough for light factroy smokeless ammo. Sorry, should have been more clear. Firing pin diameter should closely match the firing pin hole diameter, the tip shape should be a flattened hemisphere with the radius flush with the breech face. Protrusion on a shotgun should be around .065" or a bit less. With the barrel off of the frame, and a shell in the chamber, how deep does the base of the shell sit below the back of the barrel? Should be not more than .015" if the barrel locks tight against the frame. If it checks out ok, then factory low brass/low base loads should be fine. David

	David Kaiser Montezuma, IA
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Warkshop Junior Member Offline Posts: 84 Location: Kimberley Joined: Apr 7^th, 2006	Re: Stevens Tip Up Shotgun Reply #4 - Feb 22^nd, 2010 at 3:37pm	Print Post
	slumlord44 About shotshells, just because a shotshell is listed as a target load, light load or has a low brass base does not mean that it is a low pressure load. If you are loading or going to load shotshells it would be to your benefit to check loads in a recent loading handbook. There are many 1-ounce and 1 1/8 ounce loads published with pressures in the 7000 - 9000 LUP range rather than the 10000 - 11000+ range. I use the lower pressure loads in my Anslely Fox, Ithaca, Jeffrey, Parker and LC Smiths to hopefully give them a longer life. The only disadvantage to some of these loads is their performance in -30 degree temperatures. Bill


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uscra112 Frequent Elocutionist Offline Posts: 4079 Location: Switzerland of Ohio Joined: May 7^th, 2007	Re: Stevens Tip Up Shotgun Reply #5 - Feb 22^nd, 2010 at 7:05pm	Print Post
	Boy, I dunno. Chamber may be set up for solid brass shells, not paper, so the forcing cone may prove to be too small if used with modern shell cases. That would drive pressure up. I wouldn't shoot it, if it were me, until I'd done a chamber cast and compared with a modern gun. I actually HAVE a Tip-up in 12 gauge, but it's a wall hanger as far as I'm concerned.

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