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  1. S

    Hawkens missfire

    Oooops! Disregard my previous post. Re-reading I see that seating caps with the ball starter didn't help. Sorry about that. Cheers!
  2. S

    Hawkens missfire

    I have a Lyman Great Plains Rifle. These are made by Investarms. Right out of the box I had exactly the situation you describe. The culprit was the nipple. The factory nipple is enough oversize at the top that No.11 caps don't fit properly. Sure you can mash them down with your ball starter but...
  3. S

    How many leave sidelock half cocked

    Ridgroader. Great idea! After reading your post I made one up for my GPR using the neck of a .303 British case. Cut to the correct length it fits perfectly over the entire nipple and mates up well with the hammer. Similar to yours mine is attached to the trigger guard by a length of shoelace...
  4. S

    Range Report with new GPR

    I've just finished working up a load from my new GPR. Initially I started off with 70 gr of Goex, Hornady .490 RBs and .015 pre-lubed patches. The patches shredded and groups were nothing to write home about. I changed patches and the groups tightened but the patches still shredded. As I...
  5. S

    group tightner???

    I found my choice of target made quite a difference. Using the regular 100 yard sight-in target with the 6" black ring yielded 4" groups (4MOA). I found a woodchuck target with a 2" black ring yielded 2" groups (2MOA). I found the shape of the standing chuck together with a fine aiming point...
  6. S

    Percussion problem

    I bought a GPR NIB. I had a heck of a time with misfires. It soon became clear that the nipple was oversize and so the caps did not seat properly. Instead of machining it down I found properly sized Thompson Center nipples that work just fine. Cheers!
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