MK-III Range Test ... 600yds

[Ace Lungger]

No problem JB, you won't have to loose any sleep over me posted in your post!
ACE

[TAkaho kid]

Now that should be interesting! I read somewheres about PP bullets making a major win in LR shooting just recently. I'm getting more & more interested in them.

Cuts,

As far as I know they haven't taken a win yet. However, just the fact that some folks are shooting them at the big matches warms my heart.

Here is an interesting report on the 2008 American Creedmoor Cup match as well as some other goodies.
http://www.bpcr.net/site_docs-results_schedules/documents/Technical_Information.htm

Ace,
I would suggest Mike Venturio's book "Shooting the Buffalo Guns of the Old West"

Best regards,

TK

[TAkaho kid]

John Boy,

The bullets arrived havn't had time to open the box yet. Now to make time to get the loadeding and the shooting done. 


T.K.

[Ranch 13]

I loaded and shot 30 of these bullets today, 10 each of 70 grs 2f schuetzen, 2f goex express, and 73 grs 3f express, all with a .060 wad. Distance to  the NRA Fclass target was 500 yds, not a one hit the paper,a couple did find the edges of the mounting board . I did fire 3 of the 3fexpress rounds at the bathtub beside the target stand. First round went just over, second round hit low and skipped in 3rd shot struck center but didn't hit square, was tipping badly according to the mark it left.
Have 20 left and am in a quandry as to what to load to try, and just how far out a person should try them,seems they shoot ok to 200ish, maybe go to 350 and see if that's where they start to upset?.

[john boy]

Don, try some with 65gr Goex CTG and seat them with the driving band JUST lightly touching the leading bore cuts.  This was the recipe that I put most of them on the paper with - though the group was large

[Ranch 13]

 John thanks, I was thinking to use Cartridge in the next go. This CSA doesn't care much for the bullet to touch the rifling before it goes bang, but I think I just might load the last 20 10 touching the other 10 not, and take them to Alliance and just see if I can get any hits or at least spook the 800 yd buff or the 970 yd bear during warmups.

[Dick Dastardly]

Howdy John Boy,

Your photo looks like vertical stringing.  Of course, it's a vertical photo.  Do you have any idea of which shots were first and which were last.  I've found that this bullet seems to start low and work up in my Remington roller.  It seems to settle down after about Three shots thru a clean barrel.

I also got my best groups with the bullets seated just touching the rifling leades.  I've always marked my brass with a punch and have found, in my gun, it pays to orient the brass the same way each time I load and shoot.  I don't resize my brass except just enough to give slight tension on the bullet.  I hand seat the bullets on top the Circle Fly 1/16" wad with my thumb.

Photos will come now that things have dried up around here.  The hay cutter is off the south forty.

FWIW, it looks promising at North Bristol Sportsman's Club for the long range rifle range.  Zoning and Town meetings went well.  Dane Co. is the next hurdle.  They are only Ten minutes from my place.

DD-DLoS

[john boy]

Your photo looks like vertical stringing
Do you have any idea of which shots were first and which were last.

Dick, my judgement says windage instead of vertical stringing because I made a 12" windage adjustment after seeing that they were hitting on the right .

No, I have no idea what the sequence of shots were.  It's tough enough driving round trip to the frame after a few shots - let alone after every one without a spotter putting up markers or radioing back ... so I could mark them on the line sheet

[john boy]

I haven't brought this up, so let me do it now.
I fell that if the bullet base was rebated - yaw would decrease

[Dick Dastardly]

Thanks John Boy,

You did it the hard way.  I do the same thing but I have to take my Three wheeler out to the targets and back.  It's good to have a spotter with a good scope.  Saves gas.

DD-DLos

[Dick Dastardly]

Howdy JB,

As long as there was no gas leak around the rebate, it might make a difference and might not.  Healed/tapered/bevel base/boat tail and other base treatments have all been tested.  This old engineer finds that a flat base the same size as the driving bands seems to do the best job with Holy Black.

However, I do have an 8mm Louvrin design that calls for a gas check.  This thing shoots great without a gas check and a good charge of FFFg bp under it in 32 Win. Spl. rifles.  You go figure.  It also shoots great out of my 8mm-06 Mauser.  The main problem is that it doesn't carry enough lube to get the job done.

DD-DLoS

[Ranch 13]

 It seems to me this bullet has to much weight in the back half to maintain stability over the longer distances. With it being longer than common well known longrange bullets weighing 40 grs more , I'm also thinking shallowing up those lube grooves and adding another  one,probaly would do it a good turn.

[john boy]

Yes JB, I'll have targets to show very soon.  I've gotten some fantastic results.

Dick, what are you waiting for ... the next Glacial Ice Age up their in your neck of the woods?

[john boy]

Yes JB, I'll have targets to show very soon.  I've gotten some fantastic results.

Dick, because of the passage of time and your reluctance to post any targets shooting the Mk-III long range ... I don't believe you have any such targets. Is there a valid explanation why you say you have fantastic results - yet not one target picture?

[Dick Dastardly]

You are to be commended for your patience John Boy.  Those great results came back during the monsoons.  The big appliance carton melted in the downpour and photos were not taken.  I've been shooting straight SASS matches since.  So, I'll get some data and photos for you soon.

DD-DLoS

[john boy]

I've gotten some fantastic results.

So, I'll get some data and photos for you soon.

I'm confused.  First you say you "I've gotten"(past tense) and now it's "I'll get" (future tense)

The big appliance carton melted in the downpour and photos were not taken.

Anybody who shoots an 8" MOA group at 800yds doesn't let 'the carton melt'.  It gets framed and hung on the wall in the gun room!

By the way, my patience is running thin.  Two of us have shot the bullet with poor results.  If you come back with good results (no powder burns on the paper, ya hear) then your recipe has to be duplicated to prove it shoots or not.  And you know I will try to duplicate it!

[Dick Dastardly]

From GPS navigation, 550 yards.  Longer distance not available due to opening of deer bow season.

Remington rolling block 45-70 rifle built by G.A. Wakkinen of Waunakee, WI.  Lee Shaver long range tang and globe sights.

Winchester 45-70 brass
CCI 300 Large Pistol primer
0.2cc SR4759
4.0cc 1.5F Swiss
.460" Circle Fly fiber over powder card compressed with powder
DD Mk-III bullet 1:25 lube/sized to .458" using PL-II

Brass was rim marked for chamber orientation and not sized after last firing.  Bullets hand seated, length to engage rifling with thumb.  No crimp.  No cleaning or blow tube between shots.  Shots in lower right corner were sighters.  No wind.

This data seems good enough that I will attempt to get to a range yet this season and give it a go at 1000 yards.

DD-DLoS

[john boy]

Dick - that's an impressive target.  Wonder why others can't come close to that kind of group?  Will have to give it a try again when I see the 1000yd results

[Ranch 13]

That's a pretty impressive group, but what's even more impressive is being able to see that 4 inch bullseye thru irons at 500 yds.

[Dick Dastardly]

Especially when there's a steel ruler that shows that the bullseye is NOT 4".  Look again.  I'm about sick of this Ranch.  Let's see some of your fine results.

DD-DLoS