140g Hornady match bthp in a 6.5 grendel

M

mel80

New member
pretty much copying my post from another forum
this out of an 20 inch wilson barreled ar-15
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90g on left 140 on right

starting loads are 25,25.3 and 25.6g of power pro varmint with hornaday brass and cci#400 primer
First 3 25g ppv cci 400 hornaday brass 2.255 oal
squares on targets measure 1/2 inch not 1 inch like most
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In order of 3 shots
2120 fps
2137 fps
2143 fps

next 3
25.3g ppv
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2163
2167
2164 fps
 
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25.6g ppv

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I pulled that top left shot had i not i think this would have been a 1 hole group

2178
2181
2184 fps


Brass looks good going to keep working my way up

800 yard data for this load
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Mel80,

Are you risking your chronograph at 800 or just on a BC? I notice Hornady's 4DOF program based on their Doppler radar measurements of their bullets gives a little bit faster drop in velocity.

Code: 
Range  Velocity
  0      2180
100      2031   
200      1888 
300      1750
400      1619
500      1493
600      1371
700      1252
800      1136
 
Unclenick said:
Mel80,

Are you risking your chronograph at 800 or just on a BC? I notice Hornady's 4DOF program based on their Doppler radar measurements of their bullets gives a little bit faster drop in velocity.

Code: 
Range  Velocity
  0      2180
100      2031   
200      1888 
300      1750
400      1619
500      1493
600      1371
700      1252
800      1136
Click to expand...

just based off bc atm problem is the bc given for the hpbt is for velocitys over what i can achieve in the grendel (2500 fps)

so that chart is based on the given bc and my current altitude of 6,000 ft above sea level seems pretty close though

im just using theese cause i bought a few hundred of them for my creedmoor at a good price so i figured why not try them in the grendel, i think i can get theese moving at about 2250-2300 fps , and if thats the case ill switch over to some eld-m's which hornaday gives bc values for 2500fps , 2200 fps and below 1950 fps

edit

as soon as i get this load worked up ill actually get out and do some testing at range , right now im just chrono and shooting @100

might just have to see how far i can stretch out a 140g bullet

this was an attempt at 1250y with a 123g eld-m in 10-17mph winds
https://www.youtube.com/watch?v=p25N4aQVrx4


1150 was no issue on a calm day witht he 123g
https://www.youtube.com/watch?v=33LKATuXx04
 
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hey mel,,,nice rig,,is that a real atlas or a clone???

if its a clone,,,what you think of it?? and what brand?? i cant tell from the pics

i been kicking around a clone but,,,,but,,, i want a good clone ,,,ahahhaa

i finally got my ATN scope worked out ,,,they had the old one twice and finally sent a new one to me,,it seems to be working ok,,,im afraid to do any updates because im afraid it will mess it up,,,lol,,,dont mess with success ,,,lol

ocharry
 
ocharry said:
hey mel,,,nice rig,,is that a real atlas or a clone???

if its a clone,,,what you think of it?? and what brand?? i cant tell from the pics

i been kicking around a clone but,,,,but,,, i want a good clone ,,,ahahhaa

i finally got my ATN scope worked out ,,,they had the old one twice and finally sent a new one to me,,it seems to be working ok,,,im afraid to do any updates because im afraid it will mess it up,,,lol,,,dont mess with success ,,,lol

ocharry
Click to expand...

unless u want the mildot reticle theres no reason to update the fw just yet
imho the mildot reticle still needs work

its a clone i got off amazon , i did stick an oring on the tension adjustment on the bottom to stiffen it up a lil bit but other then that i love it

the first one they sent me the qd stud pulled out of the nut , they sent me a whole new bipod free of charge and a new qd lever/stud and nut to fix the first one i bought , and then i bought a 3rd one from the same place

the very first one the sent me had a smaller qd lever and stud then the replacement and last one i bought so that first one that broke may have been an old batch , but the replacement parts they sent were the heavier style ones

dropping ya a pm
 
ended up skipping a few .2g steps
27.7
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moving 2365-2377 fps brass still looks great

Went to 28g this is the top of safe
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Brass looks great one primer showed the tiniest bit of cratering and i mean tiniest so im stopping here
 
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