PRB thru a mod choke ???

[Trail Troll]

I have a CVA Trapper with screw in chokes and want to try a PRB. Can you run a PRB thru a mod choke ? Is it safe or just not the best (possibly) for accuracy? I am think of a 690 and the choke is about a .700-.705.

Thanks in advance !!

 

[springfield art]

I have a CVA Trapper with screw in chokes and want to try a PRB. Can you run a PRB thru a mod choke ? Is it safe or just not the best (possibly) for accuracy? I am think of a 690 and the choke is about a .700-.705.

Thanks in advance !!

No, a thousand times, no! JMHO

 

[BJHabermehl]

I have a CVA Trapper with screw in chokes and want to try a PRB. Can you run a PRB thru a mod choke ? Is it safe or just not the best (possibly) for accuracy? I am think of a 690 and the choke is about a .700-.705.

Thanks in advance !!

The ball If loaded on top of a fiber wad without the patch and with jute or flax fiber or top to hold the ball in place. I’d think it would be ok providing the fiber securely hold the ball in place. I wouldn’t expect much for accuracy, then again? BJH

 

[Loyalist Dave]

I have a CVA Trapper with screw in chokes and want to try a PRB. Can you run a PRB thru a mod choke ? Is it safe or just not the best (possibly) for accuracy? I am think of a 690 and the choke is about a .700-.705.

Thanks in advance !!

IF you can get it past the choke, the choke will strip the patch off as the ball exits. The problem is that it will not uniformly strip off the patch, thus your accuracy will suffer more than using a wad and a cylinder choke.

LD

 

[Billy-by-gosh]

I used to have a 20 GA Imp/Mod choke that could do a 3 1/2" group at 50 yards from a bench firing 70 grains 2F black with a bare .570 ball with a one-piece plastic Fedral wad/cup

 

[Trail Troll]

I used to have a 20 GA Imp/Mod choke that could do a 3 1/2" group at 50 yards from a bench firing 70 grains 2F black with a bare .570 ball with a one-piece plastic Fedral wad/cup

Hmmmm , did you load from thru the choke with the wad/ball combo? I guess I am asking, would you size the ball so it will just pass thru thru the choke?

 

[Grenadier1758]

That pesky phenomenon known as obturation where the lead ball expands when suddenly forced into motion means that the ball will try to expand to the bore diameter at the breech, but soft lead will be forced to the bore diameter at the choke constriction. If one intends to use a round ball in a choked smooth bored gun, soft lead must be used. No wheel weights here!

 

[Billy-by-gosh]

Hmmmm , did you load from thru the choke with the wad/ball combo? I guess I am asking, would you size the ball so it will just pass thru thru the choke?

I trimmed the petals of the wad down pretty short, then loaded. Also used a 490 ball for faster loading, though it didn't have the good grouping of the 570.