Second 6.5 grendel build is officially on! 28" ELR build - Page 2

stagpanther · November 9, 2020, 08:25 AM

Not to change the subject--have you looked at the "LTV" lightweight X-sites? That's the biggest beef I have with the regular one--it's a huge anchor on top of the rifle.

mel80 · November 9, 2020, 10:52 AM

my friend already has one , its much lighter , better picture , and about as light sensitive as the hd 2 which is a good thing , no extras on it like blastics calculator etc

ive thought about grabbing a 3-9x

im still thinking about grabbing an hd2 in 5-20x being as i already have the abl and all that

mel80 · November 10, 2020, 07:57 PM

yall arent ready for this

90g tnt reduced power load out of the 28

135g atip
2500 fps out of the 20

and out of the 28 a whooping

the 135 wll go over 2800 fps out of the 28

140g went 26xx but im going to retest due to only having shot 1 round need to load some more 140's up

stagpanther · November 11, 2020, 10:49 AM

Quote:

my friend already has one , its much lighter , better picture , and about as light sensitive as the hd 2 which is a good thing , no extras on it like blastics calculator etc

ive thought about grabbing a 3-9x

3 x 9 is probably more than enough for what I would need. I assume it also needs an IFR light?

mel80 · November 11, 2020, 11:43 AM

correct it also uses ir light

mel80 · November 13, 2020, 07:07 PM

so even though im achieving expected velocitys with alliant power pro varmint , ive decided to try out a slower ball powder , im pretty sure the slower powder will give me a bit more in velocity. may actualy cycle the gun unsupressed a lil better as well

mel80 · November 14, 2020, 07:49 PM

just an update , i went out and did more testing today , reshot the a-tips and backed up the velocitys 2700+ with room to go higher , the big suprise was in the 123g bullet class i was able to push 123g nosler custom comp's with 28g of ar-comp to 2823-2857 fps , also did some testing int he 123g class with power pro 2000mr powder and barley broke the 2600fps mark using the minimum published charge wieght

this was all shot unspuressed so no speed boost fromt he supressor this go around

pictures comming

mel80 · November 15, 2020, 11:14 AM

2000mr groups i wasnt even trying after i sent the very first round over the chrono and saw the speed , was more concerened with getting rounds down the barrel to break it in

mel80 · November 17, 2020, 04:00 PM

had to go way in the other direction to , now if fedex would get here i could put the barrel in , went with a 10.5

stagpanther · November 17, 2020, 04:47 PM

2000 mr--one of my favorites, great for 224 valkyrie as well (surprised you haven't dabbled in one of those yet).

mel80 · December 21, 2020, 03:27 PM

new parts for the 28

cant wait to try out the low mass setup , need my cam pin and firing pin to arrive first though , was uspposed to get here today but it looks like i should have it tommorow

mel80 · December 25, 2020, 11:54 PM

Putting in some work with the 28" grendels today at 208y 135g atips shot prone off the bipod and new rear monopod, low shot was my first round , made a slight adjustment and shot 4 more,
hi = 2724 fps
low = 2708 fps
sd = 6
es = 16

the low group of 5 was 123g eld-m over 28.4g of arc ill get those velocity numbers and spreds here in a few mins, brass is mint

123g velocity and specs
high= 2877
low = 2820
sd = 10
es = 26

i need to drop back down again to 28/28.2 , i actually lost speed from my 28.2 testing but could be due to low mass carrier and reduced power buffer spring causing bcg to unlock and come back a lil faster , going to put my normal buffer spring back in and test a few more at 28.4 again

mel80 · December 26, 2020, 12:08 AM

135g chrono data
https://www.youtube.com/watch?v=exj6EbPOpWQ

mel80 · December 26, 2020, 12:27 AM

https://www.youtube.com/watch?v=xy-nlJHDjAc
123g eld-m chrono data

this build is going to quickly replace my target 6.5 creedmoor build im either going to have mcgowen do a 26 inch +2 gas 5 groove rifling in either 1-8 or 1-7.5T 6.5 cm to replace my current 22" wilson barrel , or i may consider having them do a similar spec barrel for me in .243

stagpanther · December 26, 2020, 07:14 PM

I have a 7 twist McGowan in 6mm creedmoor--great with the 107-115 gr bullets.

mel80 · December 28, 2020, 06:15 PM

Quote:

Originally Posted by stagpanther

2000 mr--one of my favorites, great for 224 valkyrie as well (surprised you haven't dabbled in one of those yet).

im toying with ideas for a bolt rifle

6.5 cm 6.5-06 nexto a 30-06

i have a ton of 30-06 brass and also 300 weatherby mag i can convert to 6.5-06 or 6.5-300wm im leaning twards building a 6.5-300wm bolt gun over the 6.5-06 though i just didnt have the dies to convert the weatherby brass on hand atm

mel80 · January 7, 2021, 07:16 PM

got to finally test those lehigh defense 110 solids , first 5 loaded at 29g of ppv went 2730 fps , second 5 at 29.3 went 2710 , left side of target is the 29.3 group , on shot#4 my dot fell off and i lost my point of aim for shot #5 . lil stumped on the speed loss but im going to load more of the same 2 charges and see if my results match up , that 29.3 group is money though

mel80 · January 10, 2021, 10:51 PM

mag primer testing

i need to continue working up im basing my loads of lehighs data which lists a max charge of 29g of tac , well i know from all my other load data that ppv runs about 1-1.5g more for max on average over tac , unfortunatly i think im done doing any more testing till i get back from vacation in February, i still got to much crap to do before i leave this week i dont think ill have time to do any more shooting

my gut feeling is telline me i should see damn near 2900fps out of the 28inch gren with theese if lehighs data is correct sine they claim 25xx out of a 16 inch barrel with tac

November 9, 2020, 08:25 AM	#26
stagpanther Senior Member Join Date: March 2, 2014 Posts: 7,984	Not to change the subject--have you looked at the "LTV" lightweight X-sites? That's the biggest beef I have with the regular one--it's a huge anchor on top of the rifle. __________________ If you’re ever hiking in the woods and you get lost, just look up and find the brightest star in the sky and you’ll know which way space is. *I am NOT an expert--I do not have any formal experience or certification in firearms use or testing; use any information I post at your own risk!*

November 14, 2020, 07:49 PM	#32
mel80 Senior Member Join Date: December 11, 2019 Posts: 250	just an update , i went out and did more testing today , reshot the a-tips and backed up the velocitys 2700+ with room to go higher , the big suprise was in the 123g bullet class i was able to push 123g nosler custom comp's with 28g of ar-comp to 2823-2857 fps , also did some testing int he 123g class with power pro 2000mr powder and barley broke the 2600fps mark using the minimum published charge wieght this was all shot unspuressed so no speed boost fromt he supressor this go around pictures comming Last edited by mel80; November 14, 2020 at 08:18 PM.

November 17, 2020, 04:47 PM	#35
stagpanther Senior Member Join Date: March 2, 2014 Posts: 7,984	2000 mr--one of my favorites, great for 224 valkyrie as well (surprised you haven't dabbled in one of those yet). __________________ If you’re ever hiking in the woods and you get lost, just look up and find the brightest star in the sky and you’ll know which way space is. *I am NOT an expert--I do not have any formal experience or certification in firearms use or testing; use any information I post at your own risk!*

December 26, 2020, 07:14 PM	#40
stagpanther Senior Member Join Date: March 2, 2014 Posts: 7,984	I have a 7 twist McGowan in 6mm creedmoor--great with the 107-115 gr bullets. __________________ If you’re ever hiking in the woods and you get lost, just look up and find the brightest star in the sky and you’ll know which way space is. *I am NOT an expert--I do not have any formal experience or certification in firearms use or testing; use any information I post at your own risk!*

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November 9, 2020, 10:52 AM	#27
mel80 Senior Member Join Date: December 11, 2019 Posts: 250	my friend already has one , its much lighter , better picture , and about as light sensitive as the hd 2 which is a good thing , no extras on it like blastics calculator etc ive thought about grabbing a 3-9x im still thinking about grabbing an hd2 in 5-20x being as i already have the abl and all that

November 10, 2020, 07:57 PM	#28
mel80 Senior Member Join Date: December 11, 2019 Posts: 250	yall arent ready for this 90g tnt reduced power load out of the 28 135g atip 2500 fps out of the 20 and out of the 28 a whooping the 135 wll go over 2800 fps out of the 28 140g went 26xx but im going to retest due to only having shot 1 round need to load some more 140's up

November 11, 2020, 11:43 AM	#30
mel80 Senior Member Join Date: December 11, 2019 Posts: 250	correct it also uses ir light

November 13, 2020, 07:07 PM	#31
mel80 Senior Member Join Date: December 11, 2019 Posts: 250	so even though im achieving expected velocitys with alliant power pro varmint , ive decided to try out a slower ball powder , im pretty sure the slower powder will give me a bit more in velocity. may actualy cycle the gun unsupressed a lil better as well

November 15, 2020, 11:14 AM	#33
mel80 Senior Member Join Date: December 11, 2019 Posts: 250	2000mr groups i wasnt even trying after i sent the very first round over the chrono and saw the speed , was more concerened with getting rounds down the barrel to break it in

November 17, 2020, 04:00 PM	#34
mel80 Senior Member Join Date: December 11, 2019 Posts: 250	had to go way in the other direction to , now if fedex would get here i could put the barrel in , went with a 10.5

December 21, 2020, 03:27 PM	#36
mel80 Senior Member Join Date: December 11, 2019 Posts: 250	new parts for the 28 cant wait to try out the low mass setup , need my cam pin and firing pin to arrive first though , was uspposed to get here today but it looks like i should have it tommorow

December 25, 2020, 11:54 PM	#37
mel80 Senior Member Join Date: December 11, 2019 Posts: 250	Putting in some work with the 28" grendels today at 208y 135g atips shot prone off the bipod and new rear monopod, low shot was my first round , made a slight adjustment and shot 4 more, hi = 2724 fps low = 2708 fps sd = 6 es = 16 the low group of 5 was 123g eld-m over 28.4g of arc ill get those velocity numbers and spreds here in a few mins, brass is mint 123g velocity and specs high= 2877 low = 2820 sd = 10 es = 26 i need to drop back down again to 28/28.2 , i actually lost speed from my 28.2 testing but could be due to low mass carrier and reduced power buffer spring causing bcg to unlock and come back a lil faster , going to put my normal buffer spring back in and test a few more at 28.4 again

December 26, 2020, 12:08 AM	#38
mel80 Senior Member Join Date: December 11, 2019 Posts: 250	135g chrono data https://www.youtube.com/watch?v=exj6EbPOpWQ

December 26, 2020, 12:27 AM	#39
mel80 Senior Member Join Date: December 11, 2019 Posts: 250	https://www.youtube.com/watch?v=xy-nlJHDjAc 123g eld-m chrono data this build is going to quickly replace my target 6.5 creedmoor build im either going to have mcgowen do a 26 inch +2 gas 5 groove rifling in either 1-8 or 1-7.5T 6.5 cm to replace my current 22" wilson barrel , or i may consider having them do a similar spec barrel for me in .243

January 7, 2021, 07:16 PM	#42
mel80 Senior Member Join Date: December 11, 2019 Posts: 250	got to finally test those lehigh defense 110 solids , first 5 loaded at 29g of ppv went 2730 fps , second 5 at 29.3 went 2710 , left side of target is the 29.3 group , on shot#4 my dot fell off and i lost my point of aim for shot #5 . lil stumped on the speed loss but im going to load more of the same 2 charges and see if my results match up , that 29.3 group is money though

January 10, 2021, 10:51 PM	#43
mel80 Senior Member Join Date: December 11, 2019 Posts: 250	mag primer testing i need to continue working up im basing my loads of lehighs data which lists a max charge of 29g of tac , well i know from all my other load data that ppv runs about 1-1.5g more for max on average over tac , unfortunatly i think im done doing any more testing till i get back from vacation in February, i still got to much crap to do before i leave this week i dont think ill have time to do any more shooting my gut feeling is telline me i should see damn near 2900fps out of the 28inch gren with theese if lehighs data is correct sine they claim 25xx out of a 16 inch barrel with tac