Bullet Weights?

[fourty-five-seventy]

Ok fellers here gos. I have been reloading now since 2003 and have rolled a few rounds for my 45/70. Mostly just experimenting trying to reproduce factory 300gr HP WW loads. I ordered $380 more of supplies and one of the things is a electronic scale. Got the stuff today and I decided to see how close or if there was a difference in the weight of each bullet in a 50 count box of Remington 300gr jacketed HP. WOW!!!!!! I had 25 weigh 299.9 to 300.1grs, 12 weigh 299.4 to 299.7grs and the other 13 weigh 300.2 to 300.7grs. I'm loading 50.6grs of H4198 in WW cases. My question is (and I know its hard to say with out shooting them over a chrony) how big of a difference could there be between the loads with bullets under 300grs and over 300grs compared to the loads with ones that are 300grs.? I never did weigh any before when I reloaded them just took them right out of the box as I was doing each shell. But I have noticed that sometimes I get erratic results. Say 4 out of 5 shots at 150yds are within 1" of each other and one 4" to 6" away from the other 4.

Thanks for any help or answers

[drdougrx]

What kind of bullets??  Factory, hard cast???

[fourty-five-seventy]

 Duh stupid me forgot to say they are  Remington 300gr Jacketed HP

[Lead pot]

I call it fat fingering

Kurt

[Dand]

I'm no expert in this topic - look to the benchresters - but seems like I recall weighing some cast bullets and some jacketed bullets much smaller than what you are using.  I can't remember what I was weighing - maybe some of my own home cast but I recall a 5 gr spread top to bottom.

I'd say those bullets are pretty darned consistent especially given they are heavy relative to smaller caliber bullets. Only a 1.3 gr spread.  Given that spread is a very small % of the whole bullet weight it shouldn't be much of a factor compared to say .22 cal bullets that might vary the same range.

You could experiment and load 15 of the most consistent weight and 15 of the out-liers and compare accuracy - three 5 shot groups.

[Graybeard]

Plus/minus 1% you'll never know the difference. You are well under that variation. Shoot them and stop worrying about it.

[fourty-five-seventy]

Ok guys that's what I was thinking too but I didn't know what the manufacturer's tolerances were.

Thanks

[Lloyd Smale]

id call that a very consistant batch of factory jacketed bullets!

[huntswithdogs]

If that had been me doing the shooting,it would not have anything to do with the bullets. It'd have the shooter! After two or three ,I'd be flinchin'!

HWD

[Castaway]

When casting, i sort my bullets for plinking and hunting.  All of your variances meet my hunting criteria.  Shoot 'em, you won't notice the difference.