glock_forty5 Posted March 15, 2006 Share Posted March 15, 2006 Help a newby MOR shooter out! I am shooting at a local 3 gun match next Sunday and will be borrowing a Remmy 700 PSS in .308 with a 10X Super Sniper using 175grn Black Hills ammo for the MOR side match. MOR is new to me so forgive me if this is a stupid question. The rifle is zeroed at 100yrds and I will confirm this the day before the match. My question is how much will I need to change my point of aim on the 10 steel targets ranging from 100 to 200 yrds? Should I change my zero at a 100 yds to an inch high? Any other advice would be greatly appreciated. I know this is not a very challenging stage compared to what the guys out west shoot, but I am looking forward to it. TIA, G45 Link to comment Share on other sites More sharing options...
D.Hayden Posted March 15, 2006 Share Posted March 15, 2006 How big are the targets? If they're the normal 8" - 10" - 12" plates - I don't change, my rounds have so little difference POI, that I aim dead center on targets, out to 300, and only change for shoter distances (paper). Link to comment Share on other sites More sharing options...
glock_forty5 Posted March 16, 2006 Author Share Posted March 16, 2006 How big are the targets? Mini rifle poppers, 8" steel gong, lollypops and maybe a texas star. From what you are saying it sounds like I should be OK with a 100yd zero. Thanks, G45 Any other tips for an MOR newby? Link to comment Share on other sites More sharing options...
bgary Posted March 16, 2006 Share Posted March 16, 2006 There is a decent on-line ballistic calculator at http://www.handloads.com/calc/ Plug in the muzzle velocity, bullet weight, zero-distance, etc and it will tell you what your hold-overs are for various distances. I shoot 175g Black Hills through a Rem PSS (actually two - I have the "regular" PSS with the 1:12 twist 26" barrel, and another one with the 1:11 5R 24" barrel). If you need a good velocity figure, let me know I can dig out mine when I get home. I have the BCs and everything else for that load as well. Bottom line, though, as others have said.... it's not going to be a lot. I have a 200yd zero on mine, and my 168gr drop-card says I'll be 1.8" high at 100 yards. I think with a 100yard zero, I'dshould be about 3" low at 200, Bruce Link to comment Share on other sites More sharing options...
glock_forty5 Posted March 16, 2006 Author Share Posted March 16, 2006 There is a decent on-line ballistic calculator at http://www.handloads.com/calc/ Plug in the muzzle velocity, bullet weight, zero-distance, etc and it will tell you what your hold-overs are for various distances. I shoot 175g Black Hills through a Rem PSS (actually two - I have the "regular" PSS with the 1:12 twist 26" barrel, and another one with the 1:11 5R 24" barrel). If you need a good velocity figure, let me know I can dig out mine when I get home. I have the BCs and everything else for that load as well. Bottom line, though, as others have said.... it's not going to be a lot. I have a 200yd zero on mine, and my 168gr drop-card says I'll be 1.8" high at 100 yards. I think with a 100yard zero, I'dshould be about 3" low at 200, Bruce Thanks for the calculator, now only if I had time to chrono a few rounds. I will be shooting the 175g Black Hills so I think the drop will be greater than the 168g at 200. I only have access to a 100yd range the day before the match. I am now thinking about setting my zero at 2" high at 100yd. I really appreciate the replies, G45 Link to comment Share on other sites More sharing options...
rkgsmith Posted March 18, 2006 Share Posted March 18, 2006 Almost all of our guns drop somewhere in the 2 inch range at 200 when zeroed at 100. You can hold over slightly on long shots, or throw 4 clicks on the scope and shoot center mass on everyting. As long a nothing is under 2 inches you'll have plenty of target to hit. Link to comment Share on other sites More sharing options...
EricW Posted March 18, 2006 Share Posted March 18, 2006 (edited) Head to: http://www.eskimo.com/~jbm/calculations/tr...traj_basic.html and you can figure it out fairly closely. BC for a 175gr MK: .496 for 2800 fps or less. I shoot Sierra 175's out of a 26" PSS at 2640 fps. At 200 yards, I need to dial in right about 1.75 MOA - which is about 3.5". That seems like a lot, but I have tallish rings. That will get you close, but there's no substitute for shooting your rifle *prior* to the match. If you know much about mildots, 3.5 is very close the the inch value of 1 mil at 100 yards. So at 200, you could hold over 1/2 mil and let 'er rip. Edited March 18, 2006 by EricW Link to comment Share on other sites More sharing options...
Jim Watson Posted April 13, 2006 Share Posted April 13, 2006 I'd rather be on at 200 and a little high (about 1.75", check the charts) at 100 than on at 100 and a little more low at 200 where the targets are less distinct even through a scope. Link to comment Share on other sites More sharing options...
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