Bob, what you say on ricochet risks is very interesting. Although I knew of them, I hadn't realised they're as great as that.
I do not believe they are.
Any round can ricochet and does, spend some time in the Target butts of ANY club or MOD range and you will see them, hear them and feel bullets hitting the mantle and spinning over the top into the backstop!
Ricochet potential is higher in any scenario where mass is maintained post impact
Solid Lead rimfire rounds and Blackpowder ball and solids at low velocities are well known for this.
What they do not tend to do is "zing" audibly as often as jacketed bullets or those with sharp edges post impact (the part that creates the audible ricochet as it spins through the air).
Large angle change ricochets are more often associated with bullets hitting solid, immovable objects that deform the projectile without allowing energy absorption of the impact.
Large Rocks. Walls, Concrete
Not common on Ranges in the arc of fire....
ANY shot should be considered a ricochet risk and shooting deer in rocky areas it is almost impossible to have a shot without a ricochet risk.
NRA ban on using solids should not be assumed to based on there being a clear indication and knowledge of higher ricochet potential
It is in place because no such information exists, hence the recent studies.
Also not to be confused with MOD "ban" on using "expanding" ammunition or "Solids" both of which happen in club use and by the MOD themselves.
The restriction is in place by the MOD on the other users of their ranges to limit the risk profile.
Numerous manufacturers in both the UK and overseas produce monolithic projectiles for the UK military and are tested on MOD ranges, either Field Firing Template ranges or a Barrack Ranges.
[FONT="]NRA chief executive Andrew Mercer:[/FONT]
[FONT="]"Monometallic bullets, other than solid lead, are banned from use on Bisley (and Pirbright) ranges. This is because solid non-lead bullets are an unknown quantity which may have greatly increased ricochet characteristics which could exceed the available air danger height, which cannot be increased due to the proximity of Farnborough Airport. Regular Bisley shooters will know that light aircraft and small jets overfly the ranges as they approach Farnborough to land.
Moreover, research to establish new safe ricochet parameters for new bullets in common calibres is likely to be very expensive and very time-consuming, meaning civilian shooters will be unable to shoot before it is published and accepted by range operators, such as the MoD, and their insurers."
[/FONT]
Unfortunately we seem to have a scenario where if one brand of one style of bullet doesn't perform, then the entire range of that style of bullets is tarred with the same brush.
We do not have the same approach when we get a runner, POI shift, failed penetration, ricochet, huge carcase damage with a jacketed lead bullet
[FONT="][/FONT]Shoot enough game and you will see a higher number of all the negative aspects.
An interesting analogy is the reputation the 6.5x55 has for producing runners in small to medium sized deer in the UK.
Common on the continent and used for moose and boar alike.
Bullets in factory ammo are often 140-156gr, with reduced MV and loaded with bullet designs like the Norma Oryx, Vulcan and Alaska
Hard bullets designed for larger, thicker skinned game.
Not hard to see why they don't perform on thin skinned light game like roe, fallow and red
In my opinion one of the fundamental errors in bullet design for use on game is to design it like a target round and hope that it performs in its terminal stage.
99% of UK deer are shot at sub 300m
We do not need high BC, boat tail, ballistic tips, small meplat, high calibre radial ogive (VLD) bullets to shoot deer at 100-300m
High BC sells bullets ....it doesn't kill deer
We do need reliable expansion and "killing power" at low and high TERMINAL velocity
ideally in the range of 2000-3000fps without pencilling or breaking up
I have tested and personally used in the field a large range of non lead offerings including several that are not on the UK market
Many of the current non lead bullet designs can and have suffered from:
- Poor expansion at lower terminal velocities (the reason manufacturers run light for calibre bullets or higher MV spec ammunition)
- Wound channel deviation - Less easy to diagnose but statistically significant non linear shot path
- Poor penetration or Break up when confronted with large boned game
but as one size does not fit all
not all bullets are designed equally for all purposes
You wouln't use a bullet designed for thick skinned heavy game
match you bullet, cartridge and velocities to the game you aim to kill