WinchesterX150

How would i measure the bore on my x-150? im thinking about having BS make some bullets for me to try out in it but the QLA has me thrown off on how to measure. I havea few GP bullets few and was thinking about pulling my breech plug, push the bullet down the bore and then push it back out the way it went in and measure off that. Would that be ok? Im having a big problem with the 2 stores not restocking the Great plains bullets fast enough for me and would like to give BS a try and then order in bulk.

cayugad

Push an all lead conical that engages the rifling into the bore and then back out and measure off the lead slug.

cascadedad

If you already have an all lead conical that fits the way you want it, why wouldn't you just measure the diameter of one and order that diameter from Dan?

WinchesterX150

i use the great plains bullets and the are hard to get into the bore until it trims down to size. I just got it done and measured .511 off the lands. See what BS has in that size and order a few bullets in different grainage.

WinchesterX150

i just measured another bullet that i didnt push down the bore and its .511 1/2" So its not to far off. Im going to look for something in the 350-385 grain area.

Underclocked

Are you measuring the land to land or groove to groove? That sounds a lot more like groove to groove and you don't want anything that big. Use the smallest measure you can on thescraped in areasget (as long as the rifle has an even number of lands/grooves). Odd numbers get a little trickier and require a bit of math aside from the measuring.

You want to order no more than about .001 over land to land - in pure lead. And you'll want his #2 lube. Anything more than that size and you'll need a short-starter. Might as well get into the ease of slip-fit stuff.

Assuming your measure is true, rounding itup to .512 for groove to groove and assuming a .004" to .005" rifling depth - your land to land should be .502 to .504. Rifling depth could even be more so don't make any assumptions there.

Pittsburghunter

i use the great plains bullets and the are hard to get into the bore until it trims down to size. I just got it done and measured .511 off the lands. See what BS has in that size and order a few bullets in different grainage

Just remember some bullets are made with oversized rings to grab the rifling and make a gas seal. Just shoot them and see how they do.

WinchesterX150

wow i just caught something. I was measuring at the tip end and i noticed that eachring on the bullet went from big to small to even smaller, i just measured the rear ring land/land and came up with .503"... Im a little lost on what size i should order.

WinchesterX150

sorry forgot, land to land = .503" - grove to grove = .500"

those numbers sound better?

sabotloader

FG

You are going to want the .503's - they will begem dandy.... If you cal Dan he will send you a sampler pack so get some.503's and .504's. I can not imagine you X150 is any tighter than my GM barrel and the .503's NE's work well init as well as Dan's .504's - thumb pressure then the ram rod.