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.17 HMR - fps all over the place

If anyone has seen my varmint posts here over the last few years you’ll know that most of my varmint kills last 2-3 years has been with a .17 hmr . 17 grain Vam CCI fps on box is 2550.
have a case -500 rounds bought pre Covid lot number ending in 049.
The rifle is a a budget Savage 93R17. A budget rifle but accurate and dependable and I don’t cry when it gets bounced on a tractor or in a truck bed .

Anyhow over years I’ve have at various times chrono’d this load - 2550 is box muzzle velocity- I’ve routinely got fps as high as 2730- almost always above 2550, almost always above 2650. A 100 fps gain is a good thing - and some rifles I’ve heard can be slightly faster than others whatever .
The problem arises in the lows 2410 is the lowest I’ve actually chronographed in this lot .
This accounts for - 3-4 stellar accurate shots and then a fifth shot can be a complete miss .
I know CCI loads nearly very one’s flavor of .17 or at least their own , federalist and Hornady and Remingtons .
Winchester/Browning iOS made by Winchester according to some .
PMC and Sellier and Bellot also load .17 but I have never seen any .
Anyone run a flavor of .17 that doesn’t have a possible 300 something fps variation possible in a single box ?
Or is this just the nature of rimfire?

Range Report Wild dope truing AB and 4dof. What is reasonable?

To get impacts beyond 600 yards, I’m having to change my bc from .292 to .280 AND change MV from a twice verified (two garmins running side by side) 2770 to 2750. On the Hornady app, this equates to 2750 and a AFF of 1.10. If I don’t change the muzzle velocity, there is no allowable AFF large enough to give me true results. To clarify, if I put in the largest allowable AFF and start lowering MV, 2750 is the first speed at which the calculated dope matches reality after conventional rounding. The curve predicted by AB matches at .280/2750. If I put the verified MV (2770) in to AB, i have to go to a BC of .272 to get hits.

This is verified at both 1800 ft and 70* and 7000 ft and 40* on small enough targets that I’m confident it’s not just bad shooting/spotting.

Berger 109 LRHT, 7.5 twist. 1000 rounds on the barrel/brake combo. 30 rounds over the garmin shows an SD of 8 and an ES of 34 and the barrel shot two back to back cloverleaf groups (sub 1/2”).

Anyone have any ideas why I’m seeing such incredible inefficiency downrange. Something about the bullets? A barrel problem causing a change to external ballistics? I’ve never seen such a huge truing solution required.
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Noveske barrel upgrade? Proof Research?

Hey Everyone,

I have a Noveske N4 Recon and am looking at options for a new barrel. My first choice is a Proof Research carbon fiber 18".

Then I got to thinking that, should I ever decide to sell, it may make the rifle hard to sell or reduce resale value over a SS or CHF steel barrel.

What do you all think?

Am I hurting resale if I go with a non-Noveske barrel?

I know the Proof CF barrel will suit what I want but I don't want to hurt the value in case I should ever decide to sell it.

Thanks!!

Stephen

Accessories MagnetoSpeed V3 Ballistic Chronograph with Soft Case

For sale is a lightly used MagnetoSpeed V3 Ballistic Chronograph with the MagnetoSpeed Soft Case (+$50). The unit is awesome. I just upgraded to a more advanced unit and have not used it in a while. I will take $200 shipped or your best offer.


PP FF, Venmo, Zelle

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Reloading Equipment SOLD Lapua 6 BR Brass - 103 count

I have 103 pieces of 6BR brass Lapua brand, SS tumbled, annealed on AMP with code 0156.

I was using 109 hybrids with it. I think it's from two different lots of brass. And probably has 4 firings on it. No issues whatsoever, primer pocket still tight.

Just selling my extras. I have another 500 count same lot 3x fired that I might consider selling later.

$80 shipped
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SOLD RPR 300WM

Looking to sell my Ruger Precision in 300 win Mag. This thing is an absolute tank. Comes with one mag, the vortex viper(6.5-20 x50) with sunshade, upgraded bolt knob, bubble level, and picatinny mount (small) under the arca rail. The muzzle break will be with it but off the rifle because I currently have an ASR brake that will stay with me as so the suppressor. Will come with about 100rds of assorted ammo. Will throw in the hard case too for that price.


asking $2,500 shipped

also might trade for a rimx or vudoo. PM with questions.

also cross posted

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SOLD Factory Match Ammo - SOLD

I’ve gotten to the point I only shoot reloads, time to offload the rest of my factory ammo.

Buyer to pay actual shipping, as I’m pricing these at the lowest price found on Ammoseek per round.

Located in DFW TX for local deal.

Zelle (preferred) - Venmo - PayPal FF accepted - not looking for trades at this time.

1. IMI 5.56 NATO 77gr Razorcore - 240 rounds - SOLD

2. Hornady 6.5 Creedmoor 140 grain ELD-M - 360 rounds - SOLD

3. Federal Gold Medal Match .308 Winchester 175gr Sierra Match King - 340 rounds - SOLD

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Accessories Sold: Foundation Centurion Vudoo .22 Inlet

Forsale is a hardly used Foundation Centurion (Dark Distressed) with a Vudoo .22 inlet. Will come with ARCA rail as well as a MDT adjustable bottom metal. Bottom metal is really nice because you can fine tune the magazines.

$SOLD shipped in cont. 48
ins. will be extra should you choose to insure it.

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Reloading Equipment Lots of powder Central MN

I got a large lot of powder from a guy getting out of the hobby. I do not need this much. The picture listing the powders and weights include the weight of the container. I as well have extra small and large rifle primers.

This will need to be a face to face sale in central Minnesota, St Cloud area, reasonable driving distance depending on the deal we make.

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Not many heavy barrel 223’s anymore?

I have to be missing something, lol. Had my mind set on a tikka t3x CTR in 223 for my kids to shoot. Come to find out, they’re no longer available in the US. I’m too OCD to buy used. Looking for something with a heavy barrel as they like to shoot. This will be for target shooting only. I’m afraid the thin barrel of the tikka t3x lite. Will heat up quickly with them shooting it back to back. Looking to stay at $1000 or less. Checked out savage, tikka, bergara. Not sure about the qc on the new REM 700’s. I have a few older ones that rock but, they’re probably 20+ years old. There just not many options with a heavy barrel in that price point. Is there something else out there I should be looking at. Not having much luck.