Just got a 54 cal lyman GPR

[user 13289]

From your description there dixie cat methinks you are describing a "coned" muzzle not a "false muzzle". A false muzzle is a separate section of bbl used only in loading.

And a false muzzle is used to protect the very square crown and the bbl is usually fully rifledup to that crown. It is favored by those shooting targets for score-where allowed.

"Coning" is a greatly extended crown/transition to rifling lands where much of the lands are cut away such that one can "thumb start" his PRB directly into the BBL and avoid using a separate ball starter.

 

[Twowithone]

So am I moving both sights or just 1. Thanks for the heads up on the brass thingy. :thumbsup:

 

[HardBall]

So am I moving both sights or just 1. Thanks for the heads up on the brass thingy. :thumbsup:

Assuming your front sight is already centered, you would general move the rear sight- but if that didn't offer enough adjustment you could also drift the front sight.

Remember; you move the rear sight in the direction you want the shot group to move- move the rear sight to the left if you want your shot group to move to the left, left for left, right for right.

You move the front sight in the opposite direction- front sight moved to the left = shot pattern moved to right, etc.

 

[user 13289]

As HB said, look at front-and make sure it is centered as best as you can see/measure to bbl/bore at muzzle.

Try to get all your adjusting done by drifting rear. Make witness marks-scratch lines to verify movement, then another after getting on-target to verify LACK of further movement.

IF the rear is getting too far out of position to get on-target, then consider moving the front (opposite) OR reshaping the notch in the rear or starting with a new blank sight.

If that doesn't work, the bbl may need evaluation. great luck

 

[Twowithone]

Thanks guys. :hatsoff:

 

[William O.]

Get the .54 as it is a bit lighter and is better balanced, not as nose heavy.