r/canadaguns • u/izza123 • 1d ago

Misc Question about 12 G to 45-70 insert

I bought a couple short sub caliber inserts for my coach gun, some rifled and some smooth bore.

One in particular is a 45-70 smooth bore insert with like an inch or less of actual bore. I know these are meant to be safe but has anybody used them before? It’ll be in a 12 gauge coach with a 12” barrel.

My main concern is, is this round going to tumble wildly striking the barrel before it can escape the muzzle?

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u/Additional_Fold_1350 1d ago

Im curious about these too.

Mainly interested in pistol caliber inserts and some 410 inserts for my coach gun, but have been debating a 45-70 but this would be a cheaper way to try out 45-70 for me before dropping the cash on a potential shoulder wrecker I wont shoot enough of. I tore my right rotator cuff back in 2012 in a bad highway wreck so dont really enjoy too heavy recoil these days. Shot some 3" 1 1/4 ox 1800 fps sugs out of it back in the spring and it tool 2 weeks before I could shoot again due to my past injury. Calculator suggested 48 flbs on those slugs after the fact, so nope never again with that gun. No recoil pad, just a steel butt plate on it. Thes slugs are fine in my 12" churchill pump, an 590, and my buddys M4, but break action shotty, nope not doing that again LOL

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u/NeruLight 1d ago

Yeah it’s crazy the difference in recoil even between a short barrel pump and a break action. They regularly bruise me up if I shoot a lot out of one

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u/Additional_Fold_1350 16h ago

Yeah a single shot charles daly 12ga isnt good with those shoulder wrecker slugs. Last time I shoot something ridiculous for shits and giggles!!!!! Was a case of they arent too bad, lets see what happens, sort of like those guys shooting 50BMG single shot pistols down in Texas