Sticky Bolt with Accurate Load

General RE LEE

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Aug 21, 2020
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491
Location
Middle Tennessee
6.5 Creedmoor
IMR 4451 42.0 grains
143 grain ELD-X
.3 MOA accuracy
Stiff bolt lift and light ejector Mark Tikka T3x
.015 off lands

Should I drop down .3 grains to 41.7 grains?
 

General RE LEE

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General RE LEE

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Aug 21, 2020
Messages
491
Location
Middle Tennessee
yes , back it off . a rough quickload guess is showing you're at 76021 PSI . it's rated at 63091 PSI .

again just a rough guess , it looks like max is about 39.5 @ 63017PSI
Thank you. IMR 4451 load data shows 41.9 as max load. 39.5 seems like a low charge. How does it arrive at that number.
 

Old rooster

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Jan 9, 2019
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402
Location
Montana
My Hornady reloading manual shows IMR4451 start load 36.6-41.3 max,143 ELD-X
If you need more velocity Superformance powder start load 38.2 gr-44.7 max-velocity 2800 fps.
I know its hard to find any powder now but for the future IMR4350 can get you 42.0 max=2750 fps.
But work up to loads.
Old Rooster
 

Old rooster

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Messages
402
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Montana
Only in 1 rifle did try a max load in my 308,I did it as a test and not my regular load.
I worked up to that max slowly and did not have a hard bolt lift or ejector marks at max load of Varget.
Tempts can change that so be careful.
Old Rooster
 

jimbires

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Mar 16, 2008
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Location
clearfield county , Pa
Thank you. IMR 4451 load data shows 41.9 as max load. 39.5 seems like a low charge. How does it arrive at that number.
that's what it shows by using all default settings . looks like the book is a little on the hot side , for your rifle and powder lot . I'd need more info to be able to taylor it to your specific combo .I'd back off at least one full grain . this is a perfect example why reloaders always start low and work up while watching for pressure signs . every once in awhile we get a curveball .


with components being hard to get , we are using what we have , or can get . are you using a magnum primer in this load ? a mag primer could cause higher pressure , I'm not sure this much though .
 

General RE LEE

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Joined
Aug 21, 2020
Messages
491
Location
Middle Tennessee
that's what it shows by using all default settings . looks like the book is a little on the hot side , for your rifle and powder lot . I'd need more info to be able to taylor it to your specific combo .I'd back off at least one full grain . this is a perfect example why reloaders always start low and work up while watching for pressure signs . every once in awhile we get a curveball .


with components being hard to get , we are using what we have , or can get . are you using a magnum primer in this load ? a mag primer could cause higher pressure , I'm not sure this much though .

Thank you I’m using Federal 210 large rifle. I worked my way up to this point and the accuracy and velocity is very nice. I will drop down to 41.5 grains
 

ShtrRdy

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High Plains
Can you measure velocity on that accurate load just to get an idea of how fast it's going? Just 2 or 3 rounds.
 

david g ranes

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Joined
Sep 9, 2009
Messages
487
6.5 Creedmoor
IMR 4451 42.0 grains
143 grain ELD-X
.3 MOA accuracy
Stiff bolt lift and light ejector Mark Tikka T3x
.015 off lands

Should I drop down .3 grains to 41.7 grains?
I’m kind of getting the same thing on a tikka 22 creedmoor bolt seems a little stiff but no other signs but the bolt lifts a little hard on a empty chamber after de- cocked might just be the nature of the beast. David
 

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