Ray
Welcome to Long Range Hunting.
I don't see a problem with using a bullet like the Sierra 250 SBT or others in the 375H&H.
The trajectory of the 375 H&H with a bullet like the Sierra 250 SBT and a muzzle velocity of 2700 (I believe this is attainable) is very near that of a 30-06 or 308 Win with a little bit heavy bullets (180 & 175). Folks shoot the 308 Win to long range (1000 yards) very often and I see no reason the 375 can't do well to 600 yards.
The one little fly in the ointment is that the 250 Sierra and I'd imaging other lighter bullets don't have a very high BC (.370 for the 250 SBT in 375). This would equate to a greater loss of velocity and energy that a 308 or 30-06 with higher BC target bullets.
To 600 yards the 375 should easily be a fine shooter and have a respectable trajectory.
If one were to use a Leupold scope with the 16" calibrated reticle (cross hair to either post tip being 8") and sight in 4" high at 100 yards the very top of the lower post should be about dead on at 500 yards. The 4" high zero would be half way to the lower tip of the upper post. With a setup like this a hunter could shoot smallish game at 100 yards with a little hold-under, have a 265 yard zero, hold half way to the tip of the lower post for 400 yards (bullet will strike 3" below point of aim) and hold at the tip of the lower post for a 500 yard shot (bullet should strike 5" below point of aim).
Hope this answers a little of your question, other will reply too.
/r
P.S. This is based on a ballistics program and some quick mental math, the atmospherics are at Standard Temperature and Pressure (STP). If you're high altitude and warm (>59 degrees) you'll be better off, if it's low altitude and cold you'll be worse off.
[ 07-13-2002: Message edited by: Dave King ]
Welcome to Long Range Hunting.
I don't see a problem with using a bullet like the Sierra 250 SBT or others in the 375H&H.
The trajectory of the 375 H&H with a bullet like the Sierra 250 SBT and a muzzle velocity of 2700 (I believe this is attainable) is very near that of a 30-06 or 308 Win with a little bit heavy bullets (180 & 175). Folks shoot the 308 Win to long range (1000 yards) very often and I see no reason the 375 can't do well to 600 yards.
The one little fly in the ointment is that the 250 Sierra and I'd imaging other lighter bullets don't have a very high BC (.370 for the 250 SBT in 375). This would equate to a greater loss of velocity and energy that a 308 or 30-06 with higher BC target bullets.
To 600 yards the 375 should easily be a fine shooter and have a respectable trajectory.
If one were to use a Leupold scope with the 16" calibrated reticle (cross hair to either post tip being 8") and sight in 4" high at 100 yards the very top of the lower post should be about dead on at 500 yards. The 4" high zero would be half way to the lower tip of the upper post. With a setup like this a hunter could shoot smallish game at 100 yards with a little hold-under, have a 265 yard zero, hold half way to the tip of the lower post for 400 yards (bullet will strike 3" below point of aim) and hold at the tip of the lower post for a 500 yard shot (bullet should strike 5" below point of aim).
Hope this answers a little of your question, other will reply too.
/r
P.S. This is based on a ballistics program and some quick mental math, the atmospherics are at Standard Temperature and Pressure (STP). If you're high altitude and warm (>59 degrees) you'll be better off, if it's low altitude and cold you'll be worse off.
[ 07-13-2002: Message edited by: Dave King ]