Two more sleeps till my new actions come in.

Glock-a-maniac said:
Bro, if I have to drive down and clear your action personally, I'll do it. I know you've been working towards the BCRA match so when the paperwork is ready, we won't be wasting any time. The other actions on the other hand might have to wait due to paperwork ie. Deb's since it got built later. I'm sorry I have to be the barer of bad news.;)
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Hummmmmmmmmmm your joking right :sniper::sniper:
 
shotzee said:
Imagine what it could do in skilled hands!;)
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Thats no joke! :D


There you have it, measured from outside to outside. Shot at 100m off a Harris bi-pod w/ rear bag.

Can't wait to start load development and see what more I can get out of it.


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Are those mag fed? I know we talked already but you have got to cram more powder in those casings. It's expected of you. No less then 46.5gr with 175gr SMK
 
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Glock-a-maniac said:
Are those mag fed? I know we talked already but you have got to cram more powder in those casings. It's expected of you. No less then 46.5gr with 175gr SMK
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I gun juiced the gun (10 rounds). Adjusted zero. Cleaned the pipe until fully clean (patches only, no brush). Then ran one fouling shot throught aiming for top dead center.

The rest is history,,, I loaded up the mag (10 rounds), shouldered the gun and let-er-rip,,, all 10 rounds.

These were mag fed, should be 2.845 COAL or 3.151 w/ comparator.

Now I'll start ramping up load development:D

Thus far at 100m it puts the bullet where you point it:cool:
 
After the Calgary Gun Show this last weekend, a couple of us got together and went out to stretch out guns a little more then we were able to during load developement. Since my gun had been apart to be painted, I had to rezero but Rick and C4PYRO confirmed their 100yd zero with insanely tight groupings. After mine was dialed in, I did the same with my 338LM AI and then turned out attention to a few gophers which was a treat.
We then set up out gongs at 500yds to see what kind of consistency we had for groups and bullet drop and we confirmed out suspisions. We all had to come up 9 1/4MOA to zero at 500yds from out 100yd zero. Working with my Exball program a little I worked the numbers backwards to fit the velocity with the bullet drop and came up with about 2800fps from the muzzle with 175gr SMK. All three guns were grouping incredibly well at that distance and with it being +10ish degrees C, pressure signs was stable.

I then switched over to my 338LM AI and from my 100yd zero had to come up only 7 1/4MOA to zero at 500yds. From the craters in the plate with a four shot group managed about 1.5" outside to outside. I was burning 112gr of US869 with a 300gr SMK.

I think I'll be ready for Summerland next month.
 
Glock-a-maniac said:
After the Calgary Gun Show this last weekend, a couple of us got together and went out to stretch out guns a little more then we were able to during load developement. Since my gun had been apart to be painted, I had to rezero but Rick and C4PYRO confirmed their 100yd zero with insanely tight groupings. After mine was dialed in, I did the same with my 338LM AI and then turned out attention to a few gophers which was a treat.
We then set up out gongs at 500yds to see what kind of consistency we had for groups and bullet drop and we confirmed out suspisions. We all had to come up 9 1/4MOA to zero at 500yds from out 100yd zero. Working with my Exball program a little I worked the numbers backwards to fit the velocity with the bullet drop and came up with about 2800fps from the muzzle with 175gr SMK. All three guns were grouping incredibly well at that distance and with it being +10ish degrees C, pressure signs was stable.

I then switched over to my 338LM AI and from my 100yd zero had to come up only 7 1/4MOA to zero at 500yds. From the craters in the plate with a four shot group managed about 1.5" outside to outside. I was burning 112gr of US869 with a 300gr SMK.

I think I'll be ready for Summerland next month.
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Just working on a pile of rounds to test. (175SMK, 155 Lapua, and 185 Lapua). We'll see which round comes out on top:D
 
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Going up in .2gr increments, that's a lot of shooting. I'm jealous I only worked up loads for one type of bullet. I might have to start working up load developement on
190gr SMKs now for the hell of it.
 
This is how I speed up working on a load.

For a 308 sized case, I will work up in .3gr increments from a mid load to a bit over max. I will only shoot 3rds per load. I will use only fireformed brass, quality components.

On a calm day using good rests and hopefully, good form, I shoot each group at 200yds. I am looking for group size to start pretty big, shrink, then expand, shrink again (node), then get real big fast/string the shots out. Pressure signs may start to show up here too.

I will then work below and slightly above the higher node in .1 or .2gr increments. Again, using 3rds each.

Say 43.7gr showed promise, I will start from 43.5 and work up to 44gr in .1gr increments.

It will become pretty obvious which loads are snugging the bullets up. I will retest that one or two best loads in larger numbers of groups just to make sure it is consistent. If I get a tie in group size, I will choose the one with the least about of vertical.

With the quality rifles you are using, you know that a good load is going to have the bullets touching/almost touching at 200yds. Any group that is overly large is not going to improve if you send another 50rds downrange.

A good load in a a good rifle is going to shoot from the first 3rds.

Doing this, I can usually dial in a rifle with a quality pipe in 30rds. Another 20 to 30rds of testing confirms that performance. Then it is off to the horizon.

Jerry
 
Mystic, what is your theory for why we're getting the velocities we're getting from a 21.75" Rock Creek barrel while getting consistent groups? The barrel is a 1:10 twist and we've gun juiced the barrels but from your point of view how is 2800ish fps possible?
 
Glock-a-maniac said:
Mystic, what is your theory for why we're getting the velocities we're getting from a 21.75" Rock Creek barrel while getting consistent groups? The barrel is a 1:10 twist and we've gun juiced the barrels but from your point of view how is 2800ish fps possible?
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Its certainly possible, all three of your are doing it:D The question remains of how stable the rounds will stay as it gets warmer out. Varget is one of the more stable powders out there.

308 appear to favor loads with high load density (I'm no expert here but if you look at a lot of the "successful" loads posted by shooters, almost all are near max load density).
 
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