30 06 Springfield - Speer Gold Dot H4350

in today's video we're going to be doing some load development in 30.6 springfield we've been excited to do some testing with these 150 grain spear gold dots as well as hodzkin's h-4350 welcome to bolt action reloading stick around welcome to today's video today we are going to be doing some testing again in 30.6 springfield which means we are bringing back out our teca m695 this tikka m695 has a 22.5 inch barrel and it's pretty much bone stock from the factory we have replaced the scope for today's testing and replaced it with our vortex 4 and a half to 27 this is an absolute ridiculous scope for this test platform however we wanted to make sure our scope wasn't affecting our groups in any way shape or form today and i certainly think it was an improvement the components for today's testing are starting with the spear gold dot part number 308 150 gdb these are a newer projectile from spear in 308 caliber from results we see online they look like they might be a pretty good hunting projectile here in 30.6 that's why we're using them the 150 grain gold dots are fairly light for caliber so certainly no twist rate concerns with our barrel today with 150 grains especially in 30 odd 6. moving on down our list hasn't h4350 is going to be our powder today it's extreme series powder with its increased temperature stability we should have easier time getting lower standard deviations at least that's what we're going to be hoping for our primer we're going to be igniting it with is the cci br2 we did a initial load work up with two different primers for this combination earlier i can put those on your screen now and you can see we had two separate charts one with the 215m primer i've had pretty good luck with magnum primers with hodgins h4350 and the other was the br2 looking at both charts and the expected pressure where i really wanted to be we're going to get into the pressure chart here in just a second but somewhere around 2950 was where we were kind of hoping to be we intended to be somewhere around our max pressure with that today looking at our curves it really looks like around somewhere around 61.4 grains was going to be where we were going to find the best results there's a bit of an added component to some of today's testing we're going to get to in a minute first let's look at our quick load velocity chart here we can see starting off at 59.6 grains quick load was estimating 2854 feet per second our actual achieve velocity we got when we did our initial work up was 2863 feet per second so pretty close quickly was estimating our max velocity at 62.3 grains would be 29.85 we actually only achieved 29.64 there but our max velocity was achieved back at 61.4 grains at 29.73 feet per second so as you can kind of see on that chart right up at 61.4 and 61.7 grains pretty similar velocity it's kind of odd that it's decreasing right there but we're going to test basically the entire length of that chart we do this in conjunction with another saturday test which is what this is and what i was really hoping honestly was to get a good response on either side of it but test our in between areas there just to see if we were missing something i kind of covered that another video already and i'll link that at the end if you guys are interested in seeing that i think that we're going to still be able to come out with a reasonable load today at least that's what i'm hoping for let's get right into our exact test load data for today we're starting off at 60.6 grains of h4350 our nozzler brass this is its second firing the cartridge overall length we're going to be testing is 3.300 inches this is about exactly 20 000 off the lens the cbto is 2.718 inches our primer is the cci br2 and if that wasn't enough detail for you uh for as far as our brass prep was concerned we actually had to lose a piece of brass for the initial load test at the lowest charge to find our anneal code we did want to get our exact anneal code from our annealer and so we're only going to be testing 24 total rounds today our first charge is what drew the short straw and only is going to have four loads to test today a little bit of quick note it was about 20 degrees warmer we ran today's testing than when we ran the initial velocity curve and so we're going to see slightly higher velocities today that shouldn't really be a surprise to anyone but i don't think our changes are going to be too drastic so let's get right into our load data starting off at our 60.6 grain charge our four shots averaged 29 43 feet per second standard deviation was 6.5 with an extreme spread of 15 and started right off of the 0.943 moa group at 60.8 grains our average velocity increased slightly to 2948 feet per second our standard deviation did as well to 11.3 extreme spread of 25 and a 1.285 moa group at 61 grains our average velocity is 29.67 feet per second standard deviation of 15.8 extreme spread of 39 and a .906 moa group at 61.2 grains 29.63 feet per second was our average velocity standard deviation came back down to 11 with an extreme spread of 23. but our group size is 1.158 moa creeping up to 61.4 grains our average velocity increased to 29.94 feet per second standard deviation was 4.9 with the extreme spread of 13 and our best group size of the day at 0.745 moa so guys as an overall small group shooter this rifle probably isn't going to be the best rifle you've ever seen however this is a factory m695 that with other factory ammo we were getting well over three moa groups with it and so i certainly think today's testing is a win being as we're kind of just on the very side of that velocity node i think we would need to confirm our load at 61.4 grains with some more testing just to kind of cover that area a little bit better and make sure we're not missing a even more stable load just a little bit higher than that value but overall 61.4 grains looks pretty good i certainly can't complain with an extreme spread of 13. i'd love to see that group be a little smaller but like i said a three-quarter moa group for this rifle certainly nothing to complain about at least in my book so if pressure would let us go a little higher let's take a quick look at the brass and we'll walk through the lowest charge to the highest and you can kind of see there is just a little bit of flattening with the primers on these just getting pretty hard to see the b and the primer i don't think that we need to go up a whole lot with the charge however there's no ejector marks on the cases or anything like that i don't think we're at a completely unreasonable velocity though according to quick load we are certainly getting on the top side of the allowable velocity for this cartridge anyway this is our 30.6 testing today i'm really happy to file this in our log for our 30.6 testing if you're interested in more 306 testing here on the channel i'll put a card up so you can check out the playlist for all of the 30.6 testing we've done here on the channel it should be all organized in there so you can go see some of the initial load development and some more testing as we do some more testing here on the channel youtube might find there's something else more down your alley you can check one of those videos out if you like if you're interested in the load demo test make sure you subscribe to the channel hit the bell icon so you get notified when i post next week's video i hope to see you come back next week and until then stay safe in small groups

Channel: Bolt Action Reloading

Views: 3,935

Rating: 4.9816513 out of 5

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Id: FcgnEybZW4o

Length: 7min 5sec (425 seconds)

Published: Sat May 30 2020