SOLD Zeiss LRP S3 Flip-Up Lens Covers
- By sremmal
- Buy - Sell - Trade
- 2 Replies
Like new ocular and 50mm objective Zeiss LRP S3 flip-up lense covers - $old shipped obo
-
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Does "Over-Annealing" Impact Shot Dynamics?
- By Rocketmandb
- Reloading Depot
- 55 Replies
A couple of weeks ago, while talking about annealing, @918v mentioned that he saw velocity drop load to load when he annealed every shot. He mentioned that he has shifted to annealing less than every shot (I think he mentioned 1/4, but I can't find it - perhaps he will post here). He called it "over-annealing", but that technically means you've cooked a case by getting it too hot - we need to come up with another label here...
Per AMP, annealing every time - or even annealing multiple times in a row - does not offer different results.
So, which is it?
I tend to agree with much of what @918v posts, so I don't discount what he's saying. At the same time, AMP is certainly in the know here too.
I decided to run what will likely be the first of many tests in this regard.
What I did:
- I took new Lapua brass and prepped as follows: uniformed flash holes and primer pockets, trimmed/chamferred/deburred, mandrel, neck lube
- After the trim step, I annealed every piece of this new brass. With five pieces, I annealed them four times, letting them cool completely between annealing
- I then primed, charged and seated (using an AMP Press)
Here are the plots (annealed 4x in blue):
Notes:
- As you can see, the 4x annealed cases show markedly lower seating forces.
- This is likely to have been caused by the brass being slightly softer.
- If these two sets of cases were shot next to each other (and I will do so hopefully tomorrow, but I might have Covid...), you would expect to see slightly lower velocity from those with lower seating forces.
- This is not 100% analogous to annealing four times over four shots because in that case, the brass would be getting worked during each shot, so I wouldn't expect this much of a drop
What's next? I don't know. I have to noodle on what would be a good test here to see how much this impacts things - I also hope I don't have Covid so I can test these tomorrow.
Per AMP, annealing every time - or even annealing multiple times in a row - does not offer different results.
So, which is it?
I tend to agree with much of what @918v posts, so I don't discount what he's saying. At the same time, AMP is certainly in the know here too.
I decided to run what will likely be the first of many tests in this regard.
What I did:
- I took new Lapua brass and prepped as follows: uniformed flash holes and primer pockets, trimmed/chamferred/deburred, mandrel, neck lube
- After the trim step, I annealed every piece of this new brass. With five pieces, I annealed them four times, letting them cool completely between annealing
- I then primed, charged and seated (using an AMP Press)
Here are the plots (annealed 4x in blue):
Notes:
- As you can see, the 4x annealed cases show markedly lower seating forces.
- This is likely to have been caused by the brass being slightly softer.
- If these two sets of cases were shot next to each other (and I will do so hopefully tomorrow, but I might have Covid...), you would expect to see slightly lower velocity from those with lower seating forces.
- This is not 100% analogous to annealing four times over four shots because in that case, the brass would be getting worked during each shot, so I wouldn't expect this much of a drop
What's next? I don't know. I have to noodle on what would be a good test here to see how much this impacts things - I also hope I don't have Covid so I can test these tomorrow.
Accessories ***SPF*** Primary Arms SLx MD-25 G2 Microdot
- By Maverick3009
- Buy - Sell - Trade
- 0 Replies
***SPF***
Bought this for a Flux Raider but didn't like the size of it so went with an RMR setup. Optic is LNIB, only even been mounted.
$120 shipped
Bought this for a Flux Raider but didn't like the size of it so went with an RMR setup. Optic is LNIB, only even been mounted.
$120 shipped
SOLD WTS GAP 33xc build
- By Moodilistic
- Buy - Sell - Trade
- 25 Replies
Arctic Camo manners LRT stock that is no longer made but does show minor fading. Chambered and bedded by GAP, Tac-338 action, Bartlein 1:8.5 1.35” straight barrel. Barrel has 480 rounds down the tube, jewell trigger. Put a T4 brake on to make ko1m weight, as it sits it’s around 25.5 pounds. Scope and bipod not included. Have 6x fired brass (70-80 cases along with 8-10 loaded rounds) that will include if buyer would like.
$4000 shipped with a Plano case, less if FTF pick up, will be in Arizona and New Mexico towards the end of the month for ko2m.
$4000 shipped with a Plano case, less if FTF pick up, will be in Arizona and New Mexico towards the end of the month for ko2m.
Attachments
Accessories ***SPF*** Scalarworks SYNC RMR mount for Rem870
- By Maverick3009
- Buy - Sell - Trade
- 0 Replies
***SPF***
NIB Scalarworks SYNC mount for Remington 870
$100 shipped.
NIB Scalarworks SYNC mount for Remington 870
$100 shipped.
SOLD ***SPF*** Ruger American Ranch .350 Legend In MDT chassis
- By Maverick3009
- Buy - Sell - Trade
- 0 Replies
***BARRELED ACTION SPF, RELISTING CHASSIS***
Looking to sell my Ruger American Ranch in .350 Legend. It's been used as my hunting rifle for 3 or 4 years but don't need a straight wall cartridge anymore. Action is sitting in a MDT LSS-XL Gen2 Chassis with a Skeleton Carbine Stock. Bolt handle and knob have been replaced with an Anarchy Outdoors bolt handle and dragon scale knob. Comes with 2 magazines. Feel free to ask any questions.
$1050 shipped
Looking to sell my Ruger American Ranch in .350 Legend. It's been used as my hunting rifle for 3 or 4 years but don't need a straight wall cartridge anymore. Action is sitting in a MDT LSS-XL Gen2 Chassis with a Skeleton Carbine Stock. Bolt handle and knob have been replaced with an Anarchy Outdoors bolt handle and dragon scale knob. Comes with 2 magazines. Feel free to ask any questions.
$1050 shipped
Reloading Equipment SAC 7PRC Modular sizing die
- By Terminus7
- Buy - Sell - Trade
- 4 Replies
Selling an unused Short Action Customs modular sizing die in 7 PRC. Has a .311 neck/shoulder bushing included. $275 shipped
SOLD Gray Ops Mini Plate Pro
- By Axel314
- Buy - Sell - Trade
- 2 Replies
Have a like new gray ops mini plate pro. 175 shipped
Accessories Liberty Precision Machine Baby Bell 5/8-24
- By ocfgator
- Buy - Sell - Trade
- 6 Replies
Attachments
Accessories WTS: RRS 22i compact tripod $825
- By Bravo6niner
- Buy - Sell - Trade
- 1 Replies
Attachments
SOLD Law tactical folder - SPF
- By BoulderE89
- Buy - Sell - Trade
- 6 Replies
Have a folder that I’m looking to sell, lockup is excellent and has no wiggle or play in it when folded. The law Gen 3 has been partly rattlecanned dark green and is subtle.
Asking $175 shipped for the law gen 3.
Asking $175 shipped for the law gen 3.
Optics Vortex Razor GEN II-E 1-6x24 VMR-2 MOA For Sale $850
- By gnq
- Buy - Sell - Trade
- 5 Replies
