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Rifles, Reloading, Optics, Equipment
7mm STW
7mm STW Reloading Thread
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<blockquote data-quote="dougduey" data-source="post: 1456662" data-attributes="member: 33159"><p>Catskills, </p><p> Do you have or have access to a chronograph?? If not, get one. It will save you a ton of time in load development. The 6.5 Guys have a great video and write up on how to do load development using a chronograph. Once you find where max is in your rifle for a particular bullet and the powder you are using, drop down about 1.5-2.0 gr from there. Then load up one round in 0.2 gr increments and fire them using the chronograph. You'll find a velocity node (or flat spot) where the velocity levels off and doesn't really change much. This is what you are looking for, and they tend to be 0.4-0.8 gr in powder increase. Then pick a spot in the middle of that node and load up 5 rounds and shoot them over the chronograph. You should have a pretty decent ES with this found load (hopefully single digits, but anything 25 fps or less is very good and very very stable). Now load up 5 more rounds and see how they group. If it's not as tight as you like, you will need to play with seating depth to dial it in.</p><p>As far as powders go, I mainly use H1000 in 150 gr bullets and above. Haven't found a bullet that didn't like H1000. I'm on my second barrel now, and H1000 gets the call for most of my loads. I use RL25 in the 140 gr bullets. RL26 is great in all bullet weights and I've used Retumbo in the 175 gr bullets</p><p></p><p>Good luck</p><p></p><p>Doug</p></blockquote><p></p>
[QUOTE="dougduey, post: 1456662, member: 33159"] Catskills, Do you have or have access to a chronograph?? If not, get one. It will save you a ton of time in load development. The 6.5 Guys have a great video and write up on how to do load development using a chronograph. Once you find where max is in your rifle for a particular bullet and the powder you are using, drop down about 1.5-2.0 gr from there. Then load up one round in 0.2 gr increments and fire them using the chronograph. You'll find a velocity node (or flat spot) where the velocity levels off and doesn't really change much. This is what you are looking for, and they tend to be 0.4-0.8 gr in powder increase. Then pick a spot in the middle of that node and load up 5 rounds and shoot them over the chronograph. You should have a pretty decent ES with this found load (hopefully single digits, but anything 25 fps or less is very good and very very stable). Now load up 5 more rounds and see how they group. If it's not as tight as you like, you will need to play with seating depth to dial it in. As far as powders go, I mainly use H1000 in 150 gr bullets and above. Haven't found a bullet that didn't like H1000. I'm on my second barrel now, and H1000 gets the call for most of my loads. I use RL25 in the 140 gr bullets. RL26 is great in all bullet weights and I've used Retumbo in the 175 gr bullets Good luck Doug [/QUOTE]
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Rifles, Reloading, Optics, Equipment
7mm STW
7mm STW Reloading Thread
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