Always a good time

Just finished putting the rifle back together with a new barrel, new chamber job and had all the brass necked up to a 416 versus 375. Breakin went well and the rifle is pushing a 505 grain bullet at a mild 3105 fps. I still need to pressure check two more loads with increased powder charges and measure case heads to see if there is any expansion starting. Then from there I will group test 3 round groups of different charge weights to see which holds the tightest at 800.

So far everything is coming together very well.

JH

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Damn….I’ll bet that sucker speaks right at ya. 3105 on a 505 grain pill? That’s moving for a .416. What does the gun weigh?

Its my long range rifle used for shooting steel while laying on the ground prone, kicks like a 20ga. Complete ready to fire, rifle, scope and bipod 40lbs

JH

Looks like your getting ready for the two mile. Have to admit, I’m very jealous. Doc doesn’t want me discharging any firearms until they figure out what is ripped in my shoulder. This car accident really messed me up and taking all the fun away

The .416 Rigby double I shot had way more recoil than a 20 gauge but the gun weighed only 14 pounds. lol

These new wildcatted long range guns look like fun if I was younger….old age vision ya know. At 800, what’s the plate diameter?

Randy

Hopefully things heal up soon and you can get back at pulling the trigger. Yes I am trying to get ready for the 2 mile, June will be here before you know it and testing equipment is a bit more challenging.

We should catch up some time for coffee or something and visit.

JH

Tom
Last year the 375 pushing a 400 grain at 3316 fps in which was the load charge used for the 2 mile averaged a 1” to 2” vertical at 800 yards. We were able to push the 400 grain to 3400+ fps but wanted to detune the load due to New Mexico temps and having to shooting up to 15 rounds in 9 minutes or less in which was hard on the throat when burning 192 grains of powder and stuffing it down a small 375 hole.

JH

Unreal. 192 grains…..sounds like something used to make a 4th of July noise maker. lol I really admire you guys that can shoot at those long distances.

Here’s a little info to compare
The BC based off of Doppler Radar for the 505 grain
G1 BC = 1.2 based off of 3150 fps
G7 BC 0.595 based off of 3150 fps

As stated I am at a mild pressure charge with the 416 using 505s running 3105 fps with 199 grains I will be pressure testing 200, 201 yet.

Even at a speed of 3105 and in Raton, NM with a DA of 8200 there I will be Supersonic at a Mach 1.11 out to 3875 yards before dropping into transonic. If I find my load has a sweet spot a little faster it just gains more range in the Supersonic stage and yields a little less wind drift but I still believe in slow and consistent versus having to have the fastest Hot Rod in which is more finicky.

Numbers always look good but you still have to study the mirage and pay attention to any updrafts or eddies I always say mirage is your freind it can tell you a lot of info. And we haven’t even mentioned earth rotation yet when you get past 2000 yards.
When you only have 3 attempts to hit a small target under a time restraint you use all the science and skill possible.

Pictured a 505 grain next to a common Hornady 308 round and then a loaded Warner 416 as well as the back of a round fired with 199 grains.

I wanted to add for the folks that are interested at 3105 fps it equates to 1975 fps and 4373 lbs of energy yet at 2000 yards on impact and at 3000 yards we have 1527 fps and 2614 lbs of energy.

JH

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Fired round

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Was able to get a little testing in at 700 the last few weeks in between work. The test load groups went from 8” down to 4.5” & 4” then down to 2.25” and this weekend with good overcast conditions the last test group circled in red had a center to center or bottom to bottom of 3/4”. I was more concerned about vertical then the left or rights, my aim point was a red horizontal line on the target face. The Extreme Spread is in single digits and the average speed with 505 gr. Flat Line’s is at 3192 fps also we are not seeing any change in diameter in the case head area and grove so the pressure is good and not stretching the primer pocket area.

JH

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