bought a pursuit LT at the local show this weekend, one of only a few guns I have been taken on, it was not what the old guy told me it was, was told it was like new clean as a whistle ect. but the price was still low enough I didn't really get hurt. While cleaning it , and quite a fight with the breech plug, bending two plug wrenches, we got it out. the barrell was real dirty but not really pitted, we cleaned it up and took it out to shoot it. When we got to the range found out that the gun would not close and lock up with a primmer in the plug. If you slam the gun REAL hard it will lock up but if you try and close the rifleit won't lock up. we are using winchester primers (209) ore other brand primers shorter? have ony of you all had a problem like this before, other than that the gun shoots very well, till the last shot when my son forgot to put any powder in before the ball. Puled the plug shoved the ball out and on our way again. any help would be appreciated.