208 AMAX: Jam or jump
- Thread starter colt933
- Start date
Re: 208 AMAX: Jam or jump
Anywhere from just touching to .020 off has worked well for me. Never tried jamming though.
Anywhere from just touching to .020 off has worked well for me. Never tried jamming though.
Re: 208 AMAX: Jam or jump
I had lousy results jamming and touching.
My 30-06 just gobbles them up at 0.020" off the lands.
I had lousy results jamming and touching.
My 30-06 just gobbles them up at 0.020" off the lands.
Re: 208 AMAX: Jam or jump
good info and good ? COLT
I've just found a powder charge and am now going to start backing away from touching the lands. If what you guys are saying is true then I'm looking forward to finding that sweet spot and seeing what happens to my group size.
good info and good ? COLT
I've just found a powder charge and am now going to start backing away from touching the lands. If what you guys are saying is true then I'm looking forward to finding that sweet spot and seeing what happens to my group size.
Re: 208 AMAX: Jam or jump
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 30/50</div><div class="ubbcode-body">good info and good ? COLT
I've just found a powder charge and am now going to start backing away from touching the lands. If what you guys are saying is true then I'm looking forward to finding that sweet spot and seeing what happens to my group size. </div></div>
I was getting good accuracy (3/4 MOA at 200) in win cases .300wm 78.9gr H1000 jammed in .010", but velocity was low (2875+/-). I jumped .010" with same charge and velocity went way up (3050+/-) but group size got worse. So I will work my charge weight down and experiment with jumping .010 to .020.
Thanks for all the responses.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 30/50</div><div class="ubbcode-body">good info and good ? COLT
I've just found a powder charge and am now going to start backing away from touching the lands. If what you guys are saying is true then I'm looking forward to finding that sweet spot and seeing what happens to my group size. </div></div>
I was getting good accuracy (3/4 MOA at 200) in win cases .300wm 78.9gr H1000 jammed in .010", but velocity was low (2875+/-). I jumped .010" with same charge and velocity went way up (3050+/-) but group size got worse. So I will work my charge weight down and experiment with jumping .010 to .020.
Thanks for all the responses.
Re: 208 AMAX: Jam or jump
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Captain Moroni</div><div class="ubbcode-body">Sorry to hijack but do all Amax's like jump? </div></div>
I have shot every kind of Amax except for the 22c 52gr version.
Every one of them liked to be jumped between 0.01-0.025" across the span of several rifles in each caliber.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Captain Moroni</div><div class="ubbcode-body">Sorry to hijack but do all Amax's like jump? </div></div>
I have shot every kind of Amax except for the 22c 52gr version.
Every one of them liked to be jumped between 0.01-0.025" across the span of several rifles in each caliber.
Re: 208 AMAX: Jam or jump
I jump the amax's and jam the vld's and smk's. Has to do with the ogive profile. I don't have my load data handy right now though. I think the SMK's were .005 in the lands and the amax was .03 out.
I jump the amax's and jam the vld's and smk's. Has to do with the ogive profile. I don't have my load data handy right now though. I think the SMK's were .005 in the lands and the amax was .03 out.
