Sierra 116 TMK Load Data

Some more load testing 116 tmk h4350 6cm. 40.4 obviously had the best group but had a round that was really high and really low speed so it had a 17 SD but the 40.2gr had an SD of 5
 

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Above - 116TMK in a 27.5 inch Dasher PRS rig. N140. I only loaded to 29.0 N140 - will add some more powder and try some more. N140 does not equal Varget but close.
 
6-284. I loaded 8 rounds from 54 to 57.5 of N570 looking for pressure. No heavy bolt lift or signs of pressure on the brass that I could tell.

Shooting off a bipod off the tailgate in the wind. I'm going to load somewhere around 56.5-57 and shoot for groups and true velocity.
fad3fca5b5d96e215ea4b55436c159fb.jpg
1d1635e8e05bcfaa9b5bf050b5d6174c.jpg


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6-284. I loaded 8 rounds from 54 to 57.5 of N570 looking for pressure. No heavy bolt lift or signs of pressure on the brass that I could tell.

Shooting off a bipod off the tailgate in the wind. I'm going to load somewhere around 56.5-57 and shoot for groups and true velocity.
fad3fca5b5d96e215ea4b55436c159fb.jpg
1d1635e8e05bcfaa9b5bf050b5d6174c.jpg


Sent from my SM-S938U using Tapatalk
What’s your barrel length?
 
No velocity yet, round 7 was a called flyer, shown low in the pic. No pressure signs. 16" 6CM, 7.5 twist, 41gr H4350, BR-4, Lapua (I said Lapua just like JVB for extra credit) brass.

The 9 shots measure 7/8" center to center top right hole to bottom hole excluding the flyer. 1.5" counting the flyer.
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Anyone loaded these in a 6 arc? I got my barrel throated long and the 107s are jumping a mile figured i'd give some of these a try
 
Anyone loaded these in a 6 arc? I got my barrel throated long and the 107s are jumping a mile figured i'd give some of these a try

I’ve got some loaded for my 6 arc. Just waiting for a day when I have time to go test them. I’ll for sure be posting my results here.
 
Followed up today, this will be the load if the SRP doesn’t go any better.
I did pop a primer on the 11th shot today. No previous pressure signs prior to this. It could be primer pocket, it was the second firing on this star line brass. It was 59 degrees here in AK while I was shooting. So anybody that shoots that, be aware lol
 
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