"When opportunity knocks!!!"

[Rick W.]

Are we sure of the 50yd and 0.22" on a 4" with 0.001" increment?

naturally, tis only a theoretical line of sight calculation. 9mm drops like a rock past 50yds in reality.

[DonVoigt]

Originally Posted by Rick W.

Are we sure of the 50yd and 0.22" on a 4" with 0.001" increment?

naturally, tis only a theoretical line of sight calculation. 9mm drops like a rock past 50yds in reality.

Why don't you double check the calculation?
I find empirically that these heights would be ok.

Also, a 9mm(and all other rounds) drop just like a rock from the time they leave the muzzle!

[Rick W.]

I did a calculation the old fashioned way and got a nominal 0.225" at 25yds, then tried the 50 yds, got double that as one might think. 4 inch barrel, with 0.001" offset. This only has the barrel length and not the barrel length plus action length to rear sight.........ie sight radius, which as most knows, varies with model.

I then tried the parameters in this Brownell's software set, no familiarization with this piece of software; first time to try it.

http://www.brownells.com/GunTech/Sig....htm?lid=13093

G.T. is going to put out some bucks for this, just wanting to make sure he got the right stuff. Only asking someone mathematical to double check.........if I am wrong, I am sorry; but my home brew approach and the software above agree. Plug in the numbers and see if you agree or not.

I have no dog in the fight on what to offer as to sight heights. Only inquiring about the theoretical calculation. I have moved on to adjustable rear sights and even scope bases on my Lugers now.

Someone will appreciate the availability of front sights again, I am sure. The old Marble's 27 was a nice sight for some applications, but not produced for a while now.

My best to G.T.'s offering.

[John Sabato]

Originally Posted by DonVoigt

Also, a 9mm(and all other rounds) drop just like a rock from the time they leave the muzzle!

Tis' true... all things (including moving bullet projectiles) drop at the rate of 32 feet per second, per second...up until the time they reach maximum resistance to the moving air based on their mass and physical size...

I remember that from General Science class back in the middle of the last century... and I don't think they have repealed the laws of physics...(at least not just yet)...

[ithacaartist]

Originally Posted by Rick W.

Are we sure of the 50yd and 0.22" on a 4" with 0.001" increment?

naturally, tis only a theoretical line of sight calculation. 9mm drops like a rock past 50yds in reality.

Hah! 9mm does indeed drop exactly like a rock! But then again, so does every other caliber! Galileo demonstrated as such around 1590. Velocity is the only variable in this case.

[Rick W.]

I reckon the comment on dropping like a rock after 50 yds, suggests that 50yds might be considered a maximum yardage for iron sight height for the Luger. That is really all was intended.

I thought your comment on the single tall height sight was a good one; offers something to everyone with minimum outlay. One have to consider such an offering being in competition with the 98 sight or a guy with tooling to add metal and rework.

Speed of course is one of the parameters. I agree. but getting off track some here. I have no doubt that GT will think it all out; he is a contributor.

[G.T.]

Hi Rick, hey, I value, and accept, your input without hesitation... you have that, " been there done that" experience that is impossible to get anywhere else.... If you say something, you can bet your butt, I'm listening! I still have a lot to learn, and i'm not going to get there with out help from my forum friend / family! But, more important, using the .200" to .220" as a standard blade starting point... what would you recommend for increments...?? Good to hear from you Rick... best to all, til...lat'r...GT..