You guys that have used RWS factory ammunition, how close to the published velocities did you find that the ammo actually chronographed?

9,3x74R - 293 TUG (UNI)
- published 2280 fps
- actually chronographed 2288 fps (only one measurement - right barrel)

It depends on the gun more than the ammo. Every gun has differences in chamber size, throat length, bore size and barrel length. Many factors can change what the velocity of a certain load is. I'd say any factory load hits their published velocity in their test barrel. That's about all you can count on.

I've experienced results similar to mouse93 with their 9.3x74R 285gr T-mantel loads.

RWS use to load their ammunition quite hot and close to the CIP limit.

quote:

Originally posted by husky:
RWS use to load their ammunition quite hot and close to the CIP limit.

That's my experience too..
Some 9,3x62 and 8x57 IRS ammo we chronographed were all 50-100 fps behind the promised vel.

M

I don't ever recall a factory round that I have fired over a chrony being what the label said it was.

Rusty, With the exception of some Hornady rounds that has been my experience. Of course the velocities published by Federingchester are not actual chronographed velocities, just theoretical ones based on pressure calculations in a test barrel. I was curious if RWS used real world figures in their published information since I can't buy their ammo in the US to chronograph.

quote:

Originally posted by Rusty:
I don't ever recall a factory round that I have fired over a chrony being what the label said it was.

Plus one! As far as American made ammo is mostly speed checked in 30 inch test barrels, while most hunting rifles are usually no more the 26 inches on doubles, and more like 22 inches in single barreled rifles. so the speeds tend to be lower in the hunting rifle than listed on the box!

I have a box of BROWNING 375H&H ammo loaded in Canada that is hot as hell, I fired three or four rounds from one box and the recoil was more severe in a 10 pound scoped FN Mauser rifle than my 8.5 pound Ruger No1 458 win mag. The box has been setting on my desk for 15 years and is simply relegated to my ammo collection.

Hand loads is the only way to get the best your rifle will do, regardless of the type of rifle it is!

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I beleive that Norma compared to for example RWS load their ammunition about 10% under CIP limit.

RWS are closer to CIP limit.

quote:

Originally posted by mouse93:
9,3x74R - 293 TUG (UNI)
- published 2280 fps
- actually chronographed 2288 fps (only one measurement - right barrel)

Sam spot on - tho lets compare some other company ammo to gain some absolute comparison - same day, same barrel, same chrono...

CDP (Blaser) - 286gr - published 2296fps - chronoed 2257fps
Norma Oryx 286gr - published 2329fps - choronoed 2319fps
Geco TM 250gr - published 2460fps - chronoed 2289fps

So according to my data from my rifle - Norma, RWS and CDP are just there, while GECO is way off.