2100 fps load for the Encore

[Twanger]

I'm working a new high velocity load for the Encore 209X50.
The objective is to get 3-shot groups less than 1.5" at 100 yards and a MV over 2100 fps.

Currently using a 200gr 0.400" lead/antimony (3%) hollow-point spitzer in a 50/40 MMP tan sabot with 110gr T72F and a Winchester ML Primer.

Hunter280man Mark made the boolets.

Went to the range in June and shot this as the last group of the day, so things are looking good... just gotta pull the point of impact up to 2" at 100 yards, which should give me 1" low at 150 yards. I might get back out there on Sunday for an hour or two and see if I can get her zeroed properly.

http://www.hunt101.com/data/500/100yds_hunterman_200gr_50_40_110gr_T72F_B_small.jp g

[Bill Gunn]

Great group, how do you find out the velocity?

I'm always afraid to use my chronograph in front of m/l's.
I did do it a couple times leaning a 1/2 " piece of plywood to cover the front, but with mine it made it where you had to get up from the bench and look at the screen for each shot.
It would not be bad if at least 2 shooters were there, one shooting, and one reading the numbers.
Or get one with the remote reader.

I never had the sabot hit the plywood, so I don't know what mine would do to the plywood at either 2500 fps, or 2300 fps. :hmmmm2:

[Twanger]

Two ways Bill.
First, I did a bunch of work with different loads about 5 years ago and came up with a formula that computes MV from powder volume and bullet weight.
It's usually within 50 fps. Based on the formula 110gr Powder should give me 2050 fps, and 120gr powder should yield 2100 fps.

The other is I've got a chrony. I need to get it out there to verify this load. Wanted to get a good shooter before going to the trouble.

http://www.hunt101.com/data/500/medium/14937MV_vs_powder_and_lead3.jpg

Here's the data from 5 years ago...

[Bill Gunn]

Wow that's a pretty smooth curve !

Great work. I never have checked my velocity's against printed material on the net.
I should do that...

[Twanger]

Yes... there's a ton of published load data on the web and I've been saying for years that I'd like to see how it stacks up against my own self-collected data.

I've done a couple of spot-checks with published data and I'm pretty close.

For example... he's a quote form Hodgdon:

http://www.hodgdon.com/images/t7-granular-comparison-test.gif

So they say 100gr T72F with 260gr projectile gives 1811 fps.

If you check my table... 100/260 = 0.384.... and looking that up gives 1820 fps.

That's pretty danged close.