Ruger 270
12-08-2009, 04:49 AM
#1
Spike
Thread Starter
Join Date: Feb 2003
Location: Clare, Mi, USA
Posts: 39
Ruger 270
Shot my 270 @ 275 yards with 130 grain factory ammo. It grouped good but had about 10 inches of drop. This seemed excessive any thoughts. My son shot his rem 700 270 same ammo same distance had about 7 inches. 22 inch barrel on rugar vs. 24 inch on rem. Any thoughts?
12-08-2009, 06:34 AM
#3
Spike
Join Date: Dec 2007
Posts: 51
At what distance were the guns sighted in for? Were both guns sighted in with the same ammo?
If they were sighted in for 100 yards or less it's possible that his slug is still climbing slightly whereas yours is flying level. Different ring heights is a possibility and can be the cause of this situation.
The barrel length could contribute, although I doubt the 10% extra barrel length would contribute to an extra 3 inches of drop from your gun.
10 inch drop at that distance is a little inconvenient, but as long as the groupings are still good, I'm not sure I'd get all torn up about it. I'd be tempted to rezero a little higher at 100 and try again, it's easy to compensate by shooting an inch lower at 100 in order to gain a 6 or so inch drop at 250.
Grouse
If they were sighted in for 100 yards or less it's possible that his slug is still climbing slightly whereas yours is flying level. Different ring heights is a possibility and can be the cause of this situation.
The barrel length could contribute, although I doubt the 10% extra barrel length would contribute to an extra 3 inches of drop from your gun.
10 inch drop at that distance is a little inconvenient, but as long as the groupings are still good, I'm not sure I'd get all torn up about it. I'd be tempted to rezero a little higher at 100 and try again, it's easy to compensate by shooting an inch lower at 100 in order to gain a 6 or so inch drop at 250.
Grouse
12-08-2009, 06:55 AM
#4
Giant Nontypical
Join Date: Nov 2004
Posts: 5,425
Shooting at one particular range doesn't tell you much except for group size...
Back up to 100 yards, see how high she shoots there...I'd suggest sighting her in from 2-3 inches high at 100, then start shooting at longer ranges and make note of where she hits...
Typically I like to sight in around 225-250 yards on the nose, this should put you about 4-5 inches low at 300...Doing this lets you hold dead on a deer to 250 and then hold even with the spine at 300...
Back up to 100 yards, see how high she shoots there...I'd suggest sighting her in from 2-3 inches high at 100, then start shooting at longer ranges and make note of where she hits...
Typically I like to sight in around 225-250 yards on the nose, this should put you about 4-5 inches low at 300...Doing this lets you hold dead on a deer to 250 and then hold even with the spine at 300...
12-08-2009, 09:21 AM
#5
Guest
Posts: n/a
Sounds like the bullistics of that gun.
I am just sayin. A gun fires a projectile. Every gun will fire that projectile differently. All things need to be taken into account. Scope height is very important. Barrel length, yea and nah. Get a chrono, see your velocity. Get a cheap bullistic calc. like infinity punch in your numbers.
12-08-2009, 09:33 AM
#6
Guest
Posts: n/a
Sight height is moot,at that distance,given the assuredly bottom rung glass she has in place on both. It is a matter of different 100yd zero's,which translate into differing POI's at the distance the paper was hung. There isn't 50fps difference between the tubes and with all else equal(zero range),they'll track uniformly. Vary same and the deviations will surface quickly and pronouncedly.
Nothing more,nothing less.
Nothing more,nothing less.
But 200yards, your correct. I know "as usual"
But in this case, I am betting a whole lot of OE in more ways than one.
12-09-2009, 06:28 PM
#10
Nontypical Buck
Join Date: Oct 2006
Location: Spokane Washington
Posts: 1,042
Remington Shoot program shows 8.55 inches of drop with their ammo at 275 yards with a 100 yard zero. But whats funny is that it shows 11.17 inches of drop with the same zero and the same ammo. So maybe the barrel length does have a bit of say at the extended distances you are shooting? Also, are you both zeroed at 100 yards? Or is he maybe zeroing 2 inches high at 100 and you dead on?