Tube vs box gazine magazine

ratherbefishin

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I have a very accurate BRNO 22 that I shoot both CB longs and regular long rifle shells.The regular long rifle shells cycle quite smoothly from the box magazine but the CB longs don't-the bolt doesn't pick them up and they hang up-I have to single feed them manually.Question-has anyone else experianced this feed issue with CB longs-,and secondly-would a tube magazine feed any smoother?
 
My Marlin 81DL with a tube magazine feeds all .22 RF, long, long rifle.

I think my dad used to cycle shorts through it as well for those "rats in the barn" shots.

I shoot .22 CB longs through it and don't even need hearing protection.
 
Feeding

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The 22 CB Long uses a 29 grain bullet that the .22 Short uses. The .22 LR uses a heavier bullet, usually about 40 grains.

Usually, rifles are designed for a specific cartridge. It may be that the CBs are a bit shorter in the magazine, or being a bit shorter, enter the chamber at a different angle when feeding. The older Mossberg rifles had a magazine that you could adjust to compensate for the length of the cartridges, thus putting the nose of the cartridge in the proper position to feed into the chamber.

Some tube type rifles ( like the Remington 572 pump ) are marked for the Short, Long, and Long rifle, and will digest most of them. However, there are tube type rifles that are specifically made for the .22 LR only.

Even bullet shapes have a difference in the way cartridges feed into a chamber. A rifle that feeds one type or brand of ammo often will not feed another type or brand the same. Some rifles will not feed and chamber certain brands of hollow point .22s.

You might try a different brand of CB longs and see what they do.
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If you shoot a lot of those CB you could ajust the follower angle of one of your magazine
to feed them properly, but it could then be less reliable with Long Rifle.

Check if the tip of the CB hit above or under the chamber entrance, then adjust follower angle accordingly...

Jocelyn.
 
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