270 trajectory
06-07-2009, 08:30 AM
#1
Spike
Thread Starter
Join Date: Jun 2009
Posts: 92
270 trajectory
should i expect a 110 gr bullet to shoot flatter than a 130 gr bullet? some factory stuff i tried did not. i want to try reloading the sierra 110 bt. i have a tikka t3 that i just picked up after being lapped. i have plenty of imr4831,reloader 22 and some more that i cant remember right now. any sugestions would be appreciated. thank you.
06-09-2009, 01:33 AM
#2
Fork Horn
Join Date: Feb 2009
Posts: 107
RE: 270 trajectory
Lemme run some data through a ballistics program and I'll get back to this. Be helpful to know the bullets used and the velocity for each.
What do the ballistics tables at the back of your reloading manuals tell you?
Pete
What do the ballistics tables at the back of your reloading manuals tell you?
Pete
06-09-2009, 04:59 AM
#3
Giant Nontypical
Join Date: Feb 2003
Location: Texas - BUT NOW in Madison County, NY
Posts: 6,270
RE: 270 trajectory
The lighter bullet will shoot flatter if it is going faster! But there is a point where the slower bullet will pass the faster one, since the faster one sheds velocity quicker too. So it depends on how far you are talking about.....
06-09-2009, 05:26 PM
#5
Giant Nontypical
Join Date: Feb 2003
Location: fort mcmurray alberta canada
Posts: 5,667
RE: 270 trajectory
should i expect a 110 gr bullet to shoot flatter than a 130 gr bullet? some factory stuff i tried did not.
06-10-2009, 03:39 PM
#7
Giant Nontypical
Join Date: Nov 2004
Posts: 5,425
RE: 270 trajectory
http://www.federalpremium.com/products/compare/rifle_compare.aspx
Compare the 110gr Barnes and the 130gr Nosler Partition, they are both flat based bullets...This should give you a good idea...
Compare the 110gr Barnes and the 130gr Nosler Partition, they are both flat based bullets...This should give you a good idea...
?????
06-11-2009, 11:08 AM
#10
Boone & Crockett
Join Date: Jan 2004
Location: Eastern PA
Posts: 12,745
RE: 270 trajectory
Hey Stubble - my thoughts exactly.
Dead on - Your logic on bullet trajectory is dead wrong.
If you were to plot your 2 bullets you would probably see that the lighter bullet crosses the line of sight at a farther distance from the bore than the heavier bullet and is continuing to climb at 100 yds.
(ie. with a 200 yd zero from the Hornady manual, a 100 gr .277" traveling at 3600 fps will be .40" high at 100 yds whereas a 130 gr bullet at 2900 fps will be about 1.14" high.) This is considering a 1.5" high line of sight above the bore.
Dead on - Your logic on bullet trajectory is dead wrong.
If you were to plot your 2 bullets you would probably see that the lighter bullet crosses the line of sight at a farther distance from the bore than the heavier bullet and is continuing to climb at 100 yds.
(ie. with a 200 yd zero from the Hornady manual, a 100 gr .277" traveling at 3600 fps will be .40" high at 100 yds whereas a 130 gr bullet at 2900 fps will be about 1.14" high.) This is considering a 1.5" high line of sight above the bore.
