Model 94 front sight -sorted thx

WhelanLad

WhelanLad

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Rightio-
im talkin about the model 94 Big bore of mine, its back in action.
i use a low velocity round currently (20g) but can stoke it up to 34g, however the Williams sight i have on it is for the Model 94 30-30 (no biggy slightly off axis) always been lie that etc.

with the high velocity Factory 200gr loads, there is no way to LOWER the rear sight any further to have it useable..... To me i think i need to lift the front Sight height?

my current height is .380 i rekon to base of dovetail- How high would You go to be sure of being able to align the higher velocity to the peeps-

i know the Rear can move quite a bit, its currently say Just over Half way of adjustment , up.... i'd like to purchase another bead post- what say ya rekon?


i ws thinking?? 406 of brownells line up- maybe even Glow.....
https://www.brownells.com.au/index.php?route=product/category&path=10866&attr_id=1031&attr_text=.406

Thanks??
 
the next height available? from .406 is the .437 tru glow williams...... which of them yas think?


i rekon the 245 gra going faste wont need to be as 'high' s the factory 220 velocity- its about 2100- i can go to about 1900 pretty easy though with my cast commercials.
 
I think that can be calculated - how much lower, in cm or inches, do you want the bullet holes at 100 yards / 100 meters. And what is the distance between your front and rear sight now? With your rear sight at very lowest setting, is okay to have a slightly taller front than calculated - can either file it down, or raise the rear sight as needed?

Example - say you want to lower bullet holes by 4 inches at 100 yards with your rear sight all the way down. So need to raise front sight. Existing sights on rifle might be 16 inches apart.

Is a ratio - so if you want 4 inches change at 100 yards x 36 inches per yard = 3,600 inches from front sight to target. Your sights on the rifle measure 16" apart. So divide 16" into 3,600 inches = 225 So, 4 inches divided by 225 = .018" That is the amount that you want to increase your front sight height, to lower bullet holes by 4" at 100 yards. Can also be done in cm/meters but will get you a mm number, whereas most sights sold in thousandths heights.

4" change at 3,600 inches, is exactly the same triangle as .018" change at 16 inches. Same thing if done in metric, except have to keep the meters, centimetres and millimetres sorted out.

Can use exactly same process if you wanted to change 3" at 60 yards, and your sights measure 14 inches apart - just change the numbers used.
 
Last edited:
Potashminer covered the essentials of calculating sight height. For a thorough review: The Brownells Sight Height Calculator might be a good place to start.
 
4fifty8 said:
Calculate by similar triangles. OP's wide mv range might not be doable with just 1 front sight height change.
Click to expand...

yeah thta what im thinking, il get some sleep an think about it tomorow, im goin to load some hot ones an see how high i need to come up on the front- using the rear hot load - set using the rear sight lower than it is now.

Thanks alot Nels, that can make some sense once i work it out tomoro!

good evening.
wl
 
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