Hello All,

Bought a SPR 220 12 ga 2 3/4" 20" with screw in chokes.
Added the 45-70 conversion tubes.
Made a rib and ramp and added Dakota express rear blade and Marbles green optic front sights.
Lots of cheap fun.

Live in a shotgun only area of the state, so bought 2 rifled extended tubes.
Voila ! a 12 ga Paradox for under $400.

Shot Federal copper plated HP Sabot slugs, shoots them well but 1" low at 15 paces.

Tried Remington copper sabot slugs (PR12CS), all four keyholed at 15 paces.
Tried and old box of the Remingtons (PR12RS) shot straight, ie round hole.

Did a search and found that Hastings would void your warranty on the old Remington's (PR12RS)

Any theories ?
Are the new slugs smaller bore size ?
Is the velocity too high for the 1:36" choke tubes ? (1450 fps)
What is the velocity on the (PR12RS) slugs ?

Thanks
Nitro450exp