Odd BBLs From Numrich

John Sabato · 10-21-2014, 08:46 AM

Ok... according to the prints the top of the front sight base on a standard P.08 is 10mm from the bore centerline. On the artillery model print, the distance is 10.4mm plus 1.6mm or 12mm. That 2mm difference is 0.0787402 inches.

I would recommend you go with 2.5 to 3mm higher than the standard and then determine your requirements by using temporary front sights (a headless stud filed flat on top inserted into a threaded hole in the front sight base that will be covered by the sight dovetail) to experiment and find the point of impact. Once you know the ballpark for the front sight height, it will be a lot easier to extrapolate the correct base height for your custom barrel...

sheepherder · 10-21-2014, 09:59 AM

I enlarged Ed's Navy pic to life-size, confirmed that the front sight base band was 15mm and got a measurement of 5mm for the sight base height, measured from the band...

That would make it 12.5mm from the bore centerline...Compared to the 12mm LP-08 print dimension...Approximately...

Not very scientific, but there is a dearth of Navy Lugers to measure...

BTW: Both P-08 and LP-08 show a 15mm diameter front sight base band measurement...

The blade height is not terribly important, as I make my blades equal to the rear sight height. In this case, I haven't decided on a rear sight...Micro seems to be OOB...

I'd just like the front sight base height to be similar in profile to the 6" Navy barrel base...

10-21-2014, 08:46 AM	#1
John Sabato Lifer Lifetime Forum Patron Join Date: Jun 2002 Location: The Capital of the Free World Posts: 10,156 Thanks: 3,003 Thanked 2,308 Times in 1,098 Posts	Ok... according to the prints the top of the front sight base on a standard P.08 is 10mm from the bore centerline. On the artillery model print, the distance is 10.4mm plus 1.6mm or 12mm. That 2mm difference is 0.0787402 inches. I would recommend you go with 2.5 to 3mm higher than the standard and then determine your requirements by using temporary front sights (a headless stud filed flat on top inserted into a threaded hole in the front sight base that will be covered by the sight dovetail) to experiment and find the point of impact. Once you know the ballpark for the front sight height, it will be a lot easier to extrapolate the correct base height for your custom barrel... __________________ regards, -John S "...We hold these truths to be self-evident that ALL men are created EQUAL *and are endowed by their Creator* with certain UNALIENABLE* rights, and among these are life, LIBERTY, and the pursuit of happiness..."*

10-21-2014, 09:59 AM	#2
sheepherder Lifer Lifetime Forum Patron Join Date: Feb 2009 Location: ...on the 'ol Erie Canal... Posts: 8,202 Thanks: 1,417 Thanked 4,462 Times in 2,336 Posts	I enlarged Ed's Navy pic to life-size, confirmed that the front sight base band was 15mm and got a measurement of 5mm for the sight base height, measured from the band... That would make it 12.5mm from the bore centerline...Compared to the 12mm LP-08 print dimension...Approximately... Not very scientific, but there is a dearth of Navy Lugers to measure... BTW: Both P-08 and LP-08 show a 15mm diameter front sight base band measurement... The blade height is not terribly important, as I make my blades equal to the rear sight height. In this case, I haven't decided on a rear sight...Micro seems to be OOB... I'd just like the front sight base height to be similar in profile to the 6" Navy barrel base... __________________ I like my coffee the way I like my women... ...Cold and bitter...