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Author Topic: hr 45-70 sight in  (Read 853 times)

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Offline char2162

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hr 45-70 sight in
« on: April 09, 2008, 11:00:54 AM »
im at 100 yards with remington 300 grain jacketed high points at 1800 fps. i plan on reloading with 405 grain flat nose lead  with 30 grains of 4198 at 1300 fps. what will the difference be in my point of impact?
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Offline quickdtoo

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Re: hr 45-70 sight in
« Reply #1 on: April 09, 2008, 11:22:32 AM »
Shoot it and find out!! ;D

Tim
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Offline Slufoot

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Re: hr 45-70 sight in
« Reply #2 on: April 10, 2008, 01:22:09 AM »
Hey Char,
Tim is right, shooting it is the only way to really know! I'd bet that there will be a big difference in POI.

GOOD SHOOTING!
Slufoot
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Offline woodchukhntr

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Re: hr 45-70 sight in
« Reply #3 on: April 10, 2008, 03:16:49 AM »
Tim's right.  I would expect a higher POI, but no clue as to how high.
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Offline superhornet

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Re: hr 45-70 sight in
« Reply #4 on: April 10, 2008, 03:41:22 AM »
Based on my old slide rule, average relative dew point, temperature conversion and six runs on my computer and a SWAG, the drop will be 5.774213 inches.     ;D
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Offline rex6666

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Re: hr 45-70 sight in
« Reply #5 on: April 10, 2008, 04:11:17 AM »
my SWAG came in at 4.998877 that should be close enough for Government work. ::)
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Offline superhornet

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Re: hr 45-70 sight in
« Reply #6 on: April 10, 2008, 08:07:52 AM »
REX6666----------it appears when you did your calculations that by getting a drop of 4.999 you left off the data from the slide rule...ho ho ho ;D
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Offline FW Conch

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Re: hr 45-70 sight in
« Reply #7 on: April 10, 2008, 10:37:21 AM »

   Hey char . WELCOME to GB !  Tim , Slufoot & wood gave you the straight stuff.  Get a big piece of cardboard, put a red dot on it, shoot both bullets @ the dot & you'll know the answer for your gun.

   But in case your like me , 150 miles from the range & are trying to "glean" some information from this "thread" , I'll offer some help. Rem Shoot (tm) sighted in @ 25yds has your 300 @ -.18" & your 405 @ -3.74".  The Hornady (tm) site, Ballistic Resource Calculator has your 300 @ -.2" & your 405 @ -3.7", all @ 100 yds.  These are free to all of us but are "very rough" estimates.

   As time goes on , like me , you'll learn how to phrase these questions .  ::)

   Your being "initiated" by the rest of these jerks !  ;) :) :D ;D  Good Shooting  Jim
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Offline quickdtoo

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Re: hr 45-70 sight in
« Reply #8 on: April 10, 2008, 10:49:03 AM »
The Remington ballistics calculator will compare any of their ammo, here's the two you're interested in, but as has been said, you'll want to shoot it to learn what the real exterior ballistics are from your rifle. They show a 50yd zero and a 100yd zero.

Tim

Rem 45-70 300gr vs 405gr
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