maximum méplat

[canuck4570]

rifle. Ruger no 1 with 1/20 twist. 20 inches barrel

what would be the maximum Meplat on a 300 gr. bullet to be accurate to 200 yards

want to retain enough velocity and the large méplat might give up to much

game. Moose

[JM7.7x58]

Caliber?

[Outpost75]

Good rule is a meplat 0.7 of the bullet diameter in whatever caliber.

[canuck4570]

44 magnum is the caliber...

[Outpost75]

Accurate has a bunch of designs which are suitable, either plainbase or GC. A few:

http://www.accuratemolds.com/bullet_...43-290SG-D.png

http://www.accuratemolds.com/bullet_...=43-290V-D.png

http://www.accuratemolds.com/bullet_...=43-300A-D.png

http://www.accuratemolds.com/bullet_...=43-320C-D.png

[bmortell]

id probably say .32- .34 would be good max size. and just incase you didn't know already from accurate you can specify a meplat size on whatever boolit has the body design you like, don't pick something based on the meplat width pictured.

[canuck4570]

that's good I did not know this
I read that to big méplat accuracy goes down the drain past 100 yards

[bmortell]

I was just thinking of the LFN designs they use around that size rather than the standard .36 for WFN. and I haven't heard anyone say LFN is range limited

[white eagle]

have to be careful on maxing out the size of the meplat
to big and you have a wadcutter and stability can be an issue at long range
being a rifle you have a little better range than you would with a revo
Tom @ Accurate gives around 70-75% personally I would go 62% myself
in a swc or Keith boolit but thats what I shoot in a 44 and do not own a rifle in that cal
the diameter of the 44 cal boolit is what some expanding bullets strive to

[Hamish]

Problems can show when it goes transonic. A huge meplat is absolutely no guarantor of having accuracy problems, even when dropping back below the speed of sound.

[bikerbeans]

I shoot a 0.416" WFNPB with a 0.37" meplat. With a 1,700 fps MV i get 1.5 moa at 100 yards. I have not shot longer groups because i limit my hunting shots to 100 yards.

BB

[Crusty Deary Ol'Coot]

Canuck45/70,

A good read for you would be the little book by Veral Smith at Lead Bullet Technology (LBT)

My personal experience with a WFN cast bullet has been quite good.

In fact, I left the 45/70 in the rack during the 2017 deer season and used the little RUGER 77/44 rifle and a 275/280gr cast WFN. Two deer both dead where they stood.

However, while a moose from my limited experience seems to go down pretty easily, they are BIG, BIG bones, big body mass and I wonder if 200yds isn't stretching it a bit thin.

I tested the 275gr from the little rifle to right at 1900fps, but the best accuracy was right about 1750fps.

I'd feel MUCH more confident with my 45/70 and my 465gr WFN cast at 200yds then the .44, but one of the 2017 deer was at a measured 95 - 100yds and a side on shot behind the shoulder gave full penetration, dropping the deer where it stood.

But with just the front quarter of a moose weighing more then that entire white tail deer my thoughts are still the .44 is a stretch for moose at 200yds.

I consider my .44 rifle to be a 100yd. plus a bit, deer rifle.

Crusty Deary Ol'Coot

[John Boy]

what would be the maximum Meplat on a 300 gr. bullet to be accurate to 200 yards

1/8" metplat

[cwlongshot]

I gotta tell ya 200 y is a poke with a 300g 43 Mag...

I shoot a 45 Colt and the LEE 300 has quite a meplat. 40 cal Id say was near accurate. I can shoot 2” @ 100 maybe a lil less in my 20” Marlin, and I can ring steel at 200 no issue. But accurately shooting out there is another issue.

Its more than just the meplat thats up against ya. IMHO your better off gettin closer or choosing more caliber. Just sayin.

CW

[canuck4570]

1/8" metplat

that is quite small. only .0125
I was looking at the Saeco 265 gr. RNFP with is the smallest I have seen
here is a interesting view on this by the Los Angeles silhouette club
they speak about Seaco having the smalless méplat but having the most penetration and range capacity
just copy and paste the title below and it will bring you to it
Is the .44 Magnum becoming overweight?

[444ttd]

the 275gr ranch dog is all you will ever need.
http://noebulletmolds.com/NV/images/...GC)_Sketch.Jpg

[bluejay75]

I concur with going lighter. 270-280 is still a killer of a load carrying enough energy that most boolits will want to expand beyond 100 yards still holding 12-1300 FPS impact velocity.

44 magnum is my Armageddon load. I have 8 of them. Single shot, lever and bolt. 432640 or Ranchdog 265-275 have the book ratio of meplat to diameter for good down range ballistics as does the Keith boolit for that matter. I have found that the HG503 outshoots them both.

Check the ballistic tables and you’re going to see that beyond 150 yards you’re probably going to need a HP to get any of those 3 to expand out there.

I suggest the cup point or a larger pin milled down so it doesn’t blow up when you’re presented with a 50 yard shot and still expand when the boolit slows to 12-1300.

300 grain won’t carry velocity like that.

[canuck4570]

I will look at the Bullet design #43-280PG detail

also the Seaco 265 RNFP it has a smaller méplat but research says better for long range and penetration at long distances
wat you say

[Outpost75]

I will look at the Bullet design #43-280PG detail

also the Seaco 265 RNFP it has a smaller méplat but research says better for long range and penetration at long distances
wat you say

A friend of mine who was a licensed PH in several south african countries used the Saeco #430

https://www.midwayusa.com/product/1010350316

265-grain plainbased bullets in .44 Magnum in both a S&W Model 29-2 and a Marlin 1894 carbine and killed multiple tractor trailer loads of plains game for biltong after 9/11. He used 16 grains of Alliant #2400 which gave about 1050 fps from a 4" revolver and about 1250 fps from a 20-inch carbine and said these never lacked for penetration or killing power. Air cooled wheelweights, not quenched, but simply air cooled. Lubed with Lee Liquid Alox as-cast and unsized, Redding Profile Crimp Die. His Dillon RL550B was set up for this load and he assembled them by the bucket full and used nothing else.

A fellow could do lots worse.

[canuck4570]

of all the loading data that I looked at a 265 gr. bullet goes up to 1600 fps
would a gas check be better at that speed
I am not too hot at gas check and in my Ruger no 1 4570 never had a gas check on
but never went over 1400 fps
but the 44 magnum being smaller would it be better to keep speed up
they have the same Saeco 265 with a gas check